ManTech

MANTECH seeks a motivated, career- and customer-oriented Cryptocurrency Analyst to join our team in Sterling, VA. Each day, U.S. Customs and Border Protection (CBP) oversee the massive flow of people, capital, and products that enter and depart the United States via air, land, sea, and cyberspace. The volume and complexity of both physical and virtual border crossings require the application of business intelligence support service to promote efficient trade and travel. Further, effective intelligence support and big data solutions help CBP ensure the movement of people, capital, and products are legal, safe, and secure. This position is seeking a skilled professional to assist CBP officers and border enforcement personnel in effectively and efficiently identifying illicit financial tactics that may present additional risk to the United States; conduct strategic analysis to identify emerging threats; develop and evaluate CBP-wide responses based on targeting rules and intelligence driven special operations. The candidate will perform the following responsibilities: Evaluate the relevance of the data to support specific financial investigations, to analyze, to determine the performance and sensitivity of the analysis, and to project next steps for refinement, or proxies to achieve the needed results. Help interpret some of the data patterns of cryptocurrency encounters from a conceptual perspective (e.g., based on red flag indicators, schemes/methods). Work in teams that include intel analysts, OSINT analysts, federal law enforcement officers, data and visualization experts, and software developers to fully understand the data regarding AML and cryptocurrency illegal practices and make recommendations to decision makers on CBP's stance on threat streams and must be able to multitask efficiently and progressively and work comfortably in an ever-changing environment. Support the identification and analysis of tools used by transnational criminal organizations to obfuscate their transfer of funds. Draft issue papers that highlight areas of evolving trends of illicit actors to obfuscate the transfer of digital funds and train field and staff personnel on identifying digital currencies and performing preliminary analysis on findings. Develop partnerships with commercial vendors to evaluate tool capabilities to further support personnel in identifying and tracing cryptocurrency transactions and storage entities and determine appropriate tools and methods for specific projects to identify networks, predict future threats, or isolate and evaluate threat scenarios. Assist with coordinating and being a functioning member of a crypto working group to address the cryptocurrency threat to CBP's identification of transfer of illegal funds. Minimum Qualifications HS Diploma/GED and 20+ years, or AS/AA and 18+ years, or BS/BA and 12+ years, or MS/MA/MBA and 9+ years, or PhD/Doctorate and 7+ years. 5-8 years of experience in intelligence analysis or policy planning. Anti-money laundering (AML) experience. Blockchain investigation experience. Experience in cryptocurrency; transfer of funds/concealment methods. Skills in the end-to-end analytics lifecycle to synthesize actionable information through data collection, preparation, and model building and knowledge or experience with data wrangling, cleansing, and analytics. Presenting work to both technical and non-technical audiences. Preferred Qualifications Experience with FinCEN Data is preferred. Experience working in law enforcement or classified intelligence analysis environment is preferable. Clearance Requirements Must be a U.S citizen and have a current/active TS/SCI and be able to obtain and maintain a CBP Suitability prior to starting this position. Physical Requirements The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, which may involve delivering presentations.

MANTECH seeks a motivated, career and customer-oriented Technical Project Manager to join our team at Quantico, VA. Responsibilities include but are not limited to: Coordinates the procurement, shipping, installation, configuration, and integration of multi-network systems for a global USMC program, driving a seamless "DISA-to-Desktop" architecture. Plans, designs, and maintains the connectivity of enterprise system and network assets, ensuring compliance and secure operations across classified networks and domains Ensures all systems, servers, network switches, and routers are operational, properly configured, and strictly compliant with DISA STIG requirements; performs regular maintenance and troubleshooting. Configures, maintains, and monitors firewalls, IDS/IPS, and Cisco Identity Services Engine (ISE) for access control, implementing security measures tailored for specialized USMC systems. Supports the planning and implementation of enterprise service connections across domains, facilitating secure cloud computing architecture (SCCA), cross-domain solutions, and guards. Collaborates with ISSOs and Cybersecurity Services Leads in the Risk Management Framework (RMF) process, providing inputs and documentation, and mentors/trains other NOC staff and Junior Engineers. Minimum Qualifications: BA/BS in a relevant technical field (Four (4) years of additional relevant experience can be substituted in lieu of degree); 9+ years of overall IT experience with at least 5 years of that time spent working in a relevant Systems/Network Engineering role. Deep understanding of systems integration, networking protocols (TCP/IP, DNS, DHCP), routing, and comprehensive network security principles. Expertise in configuring and managing enterprise devices (routers, switches, firewalls) with hands-on experience in Cisco technologies (e.g., IOS, NX-OS) and security appliances (e.g., ASA firewalls, ISE). Proven experience securing classified networks (SIPR, NIPR, JWICS) and implementing DISA STIGs; strong familiarity with NIST frameworks and RMF. Must hold an active DoD 8570.01-M IAT Level II certification at minimum. Desired Qualifications: Master's degree in Computer Science, IT, Systems Engineering, or a relevant discipline. Experience implementing multi-vendor VoIP and VTC products in RMF environments. Experience with scripting/automation tools for system management; familiarity with the ITIL framework (ITIL Foundation certificate desired). Relevant high-level networking or systems certifications (e.g., Cisco CCNP, CCIE, CompTIA Security+, Microsoft, or Red Hat). Prior experience supporting a USMC enterprise program, or experience at a DoD Combatant Command (e.g., INDOPACOM, CENTCOM, CYBERCOM). Clearance Requirements: Must have a current/active TS/SCI clearance Must be eligible to obtain Special Access Program (SAP) Travel Requirements: 25% CONUS and OCONUS Physical Requirements: The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.

MANTECH seeks a Personnel Security Specialist II to handle personnel security functions in support of the customer's facility and organization to join our team in El Segundo, CA. The Personnel Security Specialist's will provide day-to-day PERSEC services for Collateral, Sensitive Compartmented Information (SCI), and Special Access Program (SAP) activities. Responsibilities include but are not limited to: Maintain various daily logs for administrative functions associated with PERSEC. Perform data entry and record checks in the Joint Access Database (JADE) and maintain all customer-sponsored personnel access information and billets. Build and maintain tracking spreadsheets and databases while following and enforcing customer Standard Operating Procedures. Review, track, and monitor security clearance processing activities and prepare Program Access Requests (PARs) and Special Access Program Nomination Process (SAPNP) questionnaires. Conduct Defense Central Index of Investigations (DCII), DISS, and SAPNP reviews of candidates submitted for SAP access. Provide support for security awareness programs and interface with senior leaders and Government Program Managers for Access Approval decisions. Experience maintaining personnel security files, tracking spreadsheets, and administrative logs. Minimum Qualifications: Bachelor's degree; 4 additional years of experience may be considered in lieu of degree 6+ years of related PERSEC experience, including 2 years of relevant SCI or SAP experience. Must complete DISS, Joint Access Database Environment (JADE), and DoD SAPCO approved SAPNP training. Experience executing Special Access Program Nomination Process Questionnaires and conducting record checks. Preferred Qualifications: Familiarity with security policy manuals, ICDs, JAFANs, DoD Manuals, and guiding policy documents. Ability to work in a dynamic environment and effectively interact with DoD, military, civilian, and industry partners. Clearance Requirements: Must possess an active Top-Secret clearance with SCI eligibility. Must have eligibility for access to Special Access Program Information. Must be willing to submit to a Counterintelligence polygraph. Physical Requirements: Willingness to travel within the organizational Area of Responsibility (AOR), which may include both air and ground transportation. Must be able to remain in a stationary position for extended periods in closed-area offices. Must be able to occasionally move about inside and outside the office to access files, cabinets, and safes.

MANTECH seeks a motivated, career and customer-oriented OPERATIONS RESEARCH SYSTEMS ANALYST(ORSA) to join our team in QUANTICO, VA. This role supports the execution of complex wargaming events, leveraging analytical methodologies to assess future force capabilities and shape Marine Corps doctrine. Responsibilities include but are not limited to: You will design, develop, and execute wargames and tabletop exercises to support the Marine Corps Warfighting Laboratory's strategic objectives. You will apply operations research, statistical analysis, and mathematical modeling techniques to evaluate wargame outcomes and operational concepts. You will collaborate with military planners, subject matter experts, and stakeholders to define wargame scenarios, objectives, and evaluation metrics. You will collect, process, and analyze quantitative and qualitative data generated during wargaming events to identify trends and capability gaps. You will prepare comprehensive analytical reports, briefings, and presentations to communicate findings and recommendations to senior leadership. You will support the integration of modeling and simulation tools to enhance the realism and analytical rigor of wargame execution. Minimum Qualifications: Bachelor's degree in Operations Research, Mathematics, Systems Engineering, Data Science, or a related analytical discipline and 5+ years of experience conducting quantitative and qualitative analysis in support of military operations, wargaming, or defense planning. A total of 10 years' experience without a degree. Demonstrated proficiency in statistical analysis software and data visualization tools (e.g., Python, R, Tableau, Excel). Strong understanding of Marine Corps organizational structure, doctrine, and future force design concepts. Proven ability to translate complex data into actionable insights and communicate effectively to non-technical audiences. Preferred Qualifications: Master's degree in Operations Research or a related technical field. Experience designing evaluation frameworks and data collection plans for exercises or wargames. Familiarity with combat modeling and simulation applications used within the Department of Defense. Prior military service, particularly within the United States Marine Corps, with experience in operational planning. Clearance Requirements: Must have an active current TS/SCI security clearance. Physical Requirements: Must be able and willing to perform occasional manual labor and warehouse duties, with the ability to lift up to 50 pounds. Must be able to remain in a stationary position 50% of the time.

MANTECH seeks a motivated, career and customer-oriented Senior GEOINT Data Scientist to join our team in Springfield, VA! The Senior GEOINT Data Scientist will leverage their strong technical background and knowledge to support critical data environments, to include creating streamlined processes, evaluating unique datasets, and solving challenging intelligence issues. Responsibilities include but are not limited to: Working with large structured / unstructured data in a modeling and analytical environment to define and create streamline processes in the evaluation of unique datasets and solve challenging intelligence issues Leading and participating in the design of solutions and refinement of pre-existing processes Working with Program Managers and Product Owners to translate road map features into components/tasks, estimate timelines, identify resources, suggest solutions, and recognize possible risks Using exploratory data analysis techniques to identify meaningful relationships, patterns, or trends from complex data Researching and implementing optimization models, strategies, and methods to inform data management activities and analysis Applying big data analytic tools to large, diverse sets of data to deliver impactful insights and assessments Minimum Qualifications: High School Diploma/GED with 10+ years of progressively responsible experience in GEOINT analysis, intelligence analysis, or a related technical field Education/Training Substitutions: Associate's degree may substitute for 2 years of experience. Bachelor's degree may substitute for 3 years of experience. Master's degree may substitute for 2 years of experience. PhD may substitute for 3 years of experience. Professional certifications may substitute for up to 6 months of experience. Significant experience supporting IC operations, possessing expert level knowledge to manipulate and analyze structured/ unstructured data Demonstrated experience in data mining and developing/maintaining/manipulating databases Demonstrated experience in identifying potential systems enhancements, new capabilities, concept demonstrators, and capability business cases Demonstrated experience using GOTS data processing and analytics capabilities to modernize analytic methodologies Demonstrated experience in directing activities of highly skilled technical and analytical teams responsible for developing solutions to highly complex analytical/intelligence problems Experienced in conducting multi-INT and technology specific research to support mission operations Preferred Qualifications: Possess Master's degree in Data Science or related technical field with experience developing and working with Artificial Intelligence and Machine Learning (AI/ML) Demonstrated experience of advanced programming techniques, using one or more of the following: HTML 5/Javascript, ArcObjects, Python, Model Builder, Oracle, SQL, GIScience, Geospatial Analysis, Statistics, ArcGIS Desktop, ArcGIS Server, Arc SDE, ArcIMS Experience using .NET, Python, C++, and/or JAVA programming for web interface development and geodatabase development Experience building and maintaining databases of GEOINT, SIGINT, or OSINT data related to the area of interest needs Data Visualization Experience which may include Matrix Analytics, Network Analytics, Graphing Data that assist the analytical workforce in generating common operational pictures depicting fused intelligence and information to support informal assessments and finished products Clearance Required: An active TS/SCI with the ability to obtain & maintain a Polygraph Physical Requirements: Must be able to remain in a stationary position 50%. Needs to occasionally move about inside the office to access file cabinets, office machinery, etc. Frequently communicates with co-workers, management, and senior personnel, which may involve delivering presentations. Must be able to exchange accurate information in these situations.

MANTECH seeks a motivated, career and customer-oriented Network Security Engineer to join our team in Chantilly, VA. This is an onsite position. Responsibilities include but are not limited to: Perform Tier II and Tier III network security engineering support, while assisting in designing advanced WAN, LAN, and data center solutions. Monitor and configure networks utilizing SolarWinds, Cisco Firepower FMC, and Cisco ISE to analyze complex network requirements and ensure complete, functioning infrastructure Create, maintain, and interpret highly detailed technical network security diagrams, routing topology schemas, and robust hardware configuration baselines Coordinate across large internal teams, stakeholders, and Sponsor authorities to drive infrastructure agendas and successfully navigate systems engineering processes Participate in all phases of the ITIL Service Lifecycle, including submitting Change Requests and maintaining security event monitoring policies Evaluate current network security architectures, inventory complex routing pathways, and recommend process improvements to optimize performance and throughput Deliver end-to-end functional analysis, requirements specification, cost estimation, and engineering package releases for customer production IT environments Minimum Qualifications: High School Diploma or GED with 7+ years of progressively responsible experience in Network Security Engineering, Network Analysis, or a related technical discipline Cisco Certified Network Associate (CCNA) certification, or equivalent routing/switching technical certification, ex., Juniper Networks Certified Associate - Junos (JNCIA-Junos) DoD 8570 IAT Level II Certification, e.g., Security+ DoD 8570.1 / DoD 8140.01 (IAT III Level) certification required within 6 months of hire, e.g., SecurityX Preferred Qualifications: Bachelors degree in an engineering discipline Experience using and administering SolarWinds alongside deep knowledge of Microsoft Windows Systems, HP SANs, and VMware products Advanced experience managing VPNs, GRE tunnels, routing protocols (BGP E/I, OSPF), VLANs, VRFs, and configuring KGs Strong familiarity with Cisco ACI, data center fabric best practices, Ansible, and Desired State Configuration (DSC) Strong familiarity with Cisco Secure Firewall ( Firepower FMC) Practical knowledge of BICSI standards, terminating fiber and Cat 5 cabling, as well as familiarity with NSTISSAM TEMPEST/2-95 and CNSSAM TEMPEST/01-13 guidelines Clearance Requirements: Must have a current and active TS/SCI clearance Physical Requirements: The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.

MANTECH seeks a motivated, career, and customer-oriented Network System Administrator (NSA) - I to join our team in El Segundo, CA. You will provide day-to-day support for Collateral, Sensitive Compartmented Information (SCI), and Special Access Program (SAP) activities supporting SSC Directorates and/or AFSPC Operational Units in a full-time, on-site environment. Responsibilities: Install, maintain, audit, and support a secure MS Windows network environment and limited web/data application services. Maintain internet applications and protocols including IP, TCP, HTTP, HTTPS, FTP, and SSL. Maintain file servers, firewalls, network access, Security Monitoring Systems, and system documentation. Interface directly with local customers to provide technical IT support and quickly resolve system anomalies. Perform periodic maintenance, hardware upgrades, replacement, firmware updates, and system configuration changes. Manage data backup libraries, conduct scheduled tape backups, and maintain secure storage both on-site and off-site. Attend planning meetings with IT staff, Program Managers, and customers to prepare systems for operational use and support testing. Minimum Qualifications: Bachelor's degree in a related field or 4 years of additional experience in lieu of a degree. 1+ years of total relevant IT experience Must meet DoD Directive 8570.01-M/8140 IAT Level II certification requirements (e.g., Security+ CE, CCNA, CySA+, CND) within 6 months of hire. Possess applicable Windows professional certifications based on operating system requirements for the supported organization. Preferred Qualifications: 1 year of SCI or SAP experience highly desired. Thorough knowledge of Microsoft Windows Server, Microsoft Exchange Server, and Windows client operating systems and associated hardware. Working knowledge of LAN/WAN technologies, data backup systems, and COMSEC integration. Working knowledge of JAFAN 6/0, DCID/JAFAN standards, ICDs, and Joint DODIIS/Cryptologic SCI Information Systems Security Standards. Experience with PL1 through PL4 systems and cross-domain solutions. Strong ability to work independently in a dynamic environment with DoD, military, civilian, and industry partners. Clearance Requirements: Current Top-Secret Clearance with SCI Eligibility Must be eligible for access to Special Access Programs (SAP). Must be willing to submit to a Counterintelligence polygraph. Physical Requirements: Requires travel within the organizational Area of Responsibility (AOR), which may include both air and ground transportation. Must be able to lift up to 50 lbs. Must be able to remain in a stationary position 50% of the time in closed-area offices. Must be able to move about inside and outside the office to access files, cabinets, safes, and install or remove computer-related equipment.

MANTECH seeks a motivated, career and customer-oriented Network Deployment Engineer to join our team in Chantilly, VA . This is an onsite position. Responsibilities include but are not limited to: Coordinate and execute site deployments, including planning, scheduling, and on-site installation of hardware and configurations Conduct site surveys to assess network environments, gather user requirements, and document current configurations Configure routers, switches, computers, and peripherals; implement and maintain secure, reliable network architecture Provide daily IT support across client/server/storage/network systems, including monitoring, troubleshooting, and problem resolution Manage system configurations and documentation, oversee hardware procurement, inventory, equipment movement, and shipping Ensure compliance with security directives and support architecture improvements through change requests and performance recommendations Travel up to 75% within the U.S. and occasionally (5-10%) OCONUS to perform deployment activities, surveys, installations, and on-site support Minimum Qualifications: Bachelor's degree and 2+ years of IT related experience, or an Associates degree with 6+ years of IT experience, or a High School Diploma with 11+ years of experience may be substituted for a degree DoD 8570 IAT Level II Certification, e.g., Security+ DoD 8570 Computing Environment Certification required within 6 months of hire, e.g., MCSA, VCP, or equivalent Experience with Microsoft Windows 2008/2012/2016/2019 Servers; Microsoft Windows 10; administering Microsoft Exchange, Active Directory, and workstation and server hardware; administering Microsoft Office 2010/2016; administering DNS, Group Policy, and PKI; administering vSphere, Horizon View, data backup, and antivirus software; basic networking including DHCP/TCPIP; experience with deploying workstation images; and experience with thin and/or zero clients Knowledge and experience with Microsoft Windows Systems, HP SANs, or VMware products Proficiency using Microsoft Office Suite and CRM software Experience using a Service Desk ticketing system, such as ServiceNow Preferred Qualifications: Outstanding customer relationship management skills Ability to operate under minimal supervision. Experience in the following areas: hardware/software security, router and switch communications protocols, network management, encryption techniques, firewall rule definition and authentication technologies. Working knowledge of communication security (COMSEC) policies and integration Working knowledge of Microsoft Windows systems, including DNS, Group Policy, and PKI Good working knowledge of applying security best practices from DISA and/or vendors. Basic networking ITIL Foundations certification Ability to manage multiple tasks and prioritize effectively. Clearance Requirements: Must have a current/active TS/SCI and be willing and able to obtain a polygraph Physical Requirements: The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.

MANTECH seeks a motivated, career and customer-oriented Network Engineer to join our team in Chantilly, VA. This is an onsite position. Responsibilities include but are not limited to: Perform Tier II and Tier III network engineering support, while designing advanced WAN, LAN, and data center solutions Monitor and configure networks utilizing SolarWinds, Cisco DNAC, and Cisco ISE to analyze complex network requirements and ensure complete, functioning infrastructure Create, maintain, and interpret highly detailed technical network diagrams, routing topology schemas, and robust hardware configuration baselines Coordinate across large internal teams, stakeholders, and Sponsor authorities to drive infrastructure agendas and successfully navigate systems engineering processes Participate in all phases of the ITIL Service Lifecycle, including submitting Change Requests and maintaining security event monitoring policies Evaluate current network architectures, inventory complex routing pathways, and recommend process improvements to optimize performance and throughput Deliver end-to-end functional analysis, requirements specification, cost estimation, and engineering package releases for customer production IT environments Minimum Qualifications: High School Diploma or GED with 7+ years of progressively responsible experience in Network Engineering, Network Analysis, or a related technical discipline Cisco Certified Network Associate (CCNA) certification, or equivalent routing/switching technical certification, ex., Juniper Networks Certified Associate - Junos (JNCIA-Junos) DoD 8570 IAT Level II Certification, e.g., Security+ DoD 8570.1 / DoD 8140.01 (IAT III Level) certification required within 6 months of hire, e.g., SecurityX Preferred Qualifications: Bachelors degree in an engineering discipline Experience using and administering SolarWinds alongside deep knowledge of Microsoft Windows Systems, HP SANs, and VMware products Advanced experience managing VPNs, GRE tunnels, routing protocols (BGP E/I, OSPF), VLANs, VRFs, and configuring KGs Strong familiarity with Cisco ACI, data center fabric best practices, Ansible, and Desired State Configuration (DSC) Practical knowledge of BICSI standards, terminating fiber and Cat 5 cabling, as well as familiarity with NSTISSAM TEMPEST/2-95 and CNSSAM TEMPEST/01-13 guidelines Clearance Requirements: Must have a current and active TS/SCI clearance Physical Requirements: The person in this position must be able to remain in a stationary position 50% of the time. Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.

MANTECH seeks a motivated, career and customer-oriented Senior Systems Engineer to join our team for the DOE NNSA PRI contract in Washington DC. This role offers the opportunity to contribute to critical national security efforts within a leading organization. This is an onsite position. Responsibilities include, but are not limited to: Perform full incident lifecycle from escalation to resolution and problem management; prepares and delivers presentations to colleagues, subordinates, and government representatives. Assures the proper use of current or requested testing and documentation techniques; produces, reviews substantive and complex documentation reflecting detailed knowledge of areas as identified in the statement of work. Triage, collect troubleshooting information, apply known solutions; create, direct, and resolve requests Perform routine system operations such as health checks, administer backup and restores, execute configuration changes Conduct system analysis and provide input to Microsoft engineering continuous improvement process. Participate in prime & customer change control / engineering management processes; document changes to all systems; coordinate and complete deployments and upgrades with Azure Engineering and the customer. Develop automation for most common tasks; maintain pre-production and production environments and associated code repository. Minimum Qualifications: Bachelor's degree in Cybersecurity, Computer Science, Information Technology, or a related field and 15 years of related experience; or Master's Degree in Cybersecurity, Computer Science, Information Technology, or a related field and 12 years of related experience. IAT Level 2 certification(s) Experience with Sentris and MS Windows Based Applications in Mid-to-Large Environments; experience with Active Directory Domain Services Exchange 2019, SharePoint Server 2019, SQL Server 2019, Skype for Business 2019 Experience managing a schedule and communicating scheduling requirements to management, multi-tasking/ prioritizing responsibilities and responding rapidly to changing conditions in a fast-paced environment Excellent communication skills, with the ability to convey technical information to diverse audiences. Ability to successfully pass Pre-Employment Drug Screening. Clearance Requirements: Must have a current/active TS/SCI security clearance with eligibility for SAP. Periodic Review within 5 years or enrolled in Continuous Evaluation. Physical Requirements: Must be able to remain in a stationary position up to 75% of the time Must be able to move about inside the office to access file cabinets, office machinery The person in this position frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations

MANTECH seeks a motivated, career and customer-oriented Senior Information System Security Engineer (ISSE) to join our team in Huntsville, AL. Responsibilities include, but are not limited to: Define and implement cybersecurity requirements, architectures, and secure system designs across information systems and network environments Design, develop, and integrate security solutions, including Cross Domain Solutions (CDS), to support secure data flow and system interoperability Implement network security controls and countermeasures to ensure confidentiality, integrity, availability, authentication, and non-repudiation Identify, assess, and mitigate system and network vulnerabilities, recommending enhancements to strengthen overall security posture Maintain and track vulnerability data, POA&Ms, and remediation activities using GRC and enterprise tracking tools Lead stakeholder engagement through office hours, guidance, and updated procedures to support vulnerability management and compliance efforts Provide rapid response to data calls, RFIs, and leadership inquiries, including escalation and reporting of high-risk or non-compliant remediation actions Minimum Qualifications: Must meet one of the following levels of experience: A high school diploma/GED and 14 years' experience, an Associate's degree and 10 years' experience, a Bachelors degree and 8 years' experience, or a Master's and 6 years' experience. Hold at least one of the following certifications: Certified Information Systems Security Professional (CISSP) (or Associate), CompTIA Advanced Security Practitioner (CASP) CE, Certified Secure Software Lifecycle Professional (CSSLP), CISSP- Information System Security Engineering Professional (ISSEP), Certified Information Security Manager (CISM), or CISSP- Information System Security Architecture Professional (ISSAP). Familiarity with the use and operation of security tools including: Tenable Nessus and/or Security Center, IBM Guardium, HP WeblInspect, Network Mapper (NMAP), and/or similar applications. Working knowledge of the National Institute of Standards and Technology (NIST) Risk Management Framework (RMF) and ATO processes. Experience with vulnerability management programs, including identification, tracking, and remediation of CVEs and Known Exploited Vulnerabilities (KEVs). Knowledge of federal cybersecurity directives and frameworks, including CISA Emergency Directives (EDs), Binding Operational Directives (BODs), and DOJ Vulnerability Patch Requirements (VPRs). Experience with Risk Management Framework (RMF), POA&M tracking, and governance, risk, and compliance (GRC) tools. Preferred Qualifications: Degree in Computer Science, Cybersecurity, or other cyber discipline. Ability to operate in high-tempo environments with rapid response requirements and strict deadlines. Strong organizational and process improvement skills to support reporting, tracking, and compliance initiatives. Security Clearance Requirements: Must have an active TOP SECRET security clearance and be willing and able to obtain SCI eligibility prior to start. Selected candidate must be willing to undergo a Polygraph. Physical Requirements: Must be able to remain in a stationary position 50% Needs to occasionally move about inside the office to access file cabinets, office machinery, etc. Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer Often positions self to maintain computers in the lab, including under the desks and in the server closet Frequently communicates with co-workers, management and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations

MANTECH seeks a motivated, career and customer-oriented Cyber Network Threat Analyst to join our team in Springfield, VA. The Counterintelligence Threat Technical Analyst will leverage their strong technical background and knowledge to support the Sponsor's mission by providing expert threat analysis and cyber defense support. Responsibilities include but are not limited to: Guaranteeing the completion of accurate and timely reports, ensuring all processes and activities align with established timeframes and standard operating procedures . Offering written and technical analysis to support forensic reports, CI Cyber inquiries, and recurring monthly, quarterly, and annual CI Cyber Threat reports . Detecting anomalous network activity through data analysis, evaluating intrusion detection systems, incident tickets, event and log analysis, and security change tracking . Performing thorough threat analysis, generating forecasts and alerts, and recommending effective countermeasures to mitigate risks . Investigating malicious code to determine attack vectors, payloads, and the extent of damage while proposing corrective actions . Identifying and translating stakeholder needs into technical requirements while documenting best practices and lessons learned for quality assurance . Minimum Qualifications: High School Diploma/GED with 6+ years of progressively responsible experience in Network Analysis. A Bachelor's degree can substitute for 2 years of experience and a Master's degree can substitute for 1 year of experience. Experience identifying, deciphering , and understanding network artifacts . Ability to possess or obtain certification to comply with DoD 8570.01-M Information Assurance (IA) IATIII requirements within one calendar year . Preferred Qualifications: Credentialed graduate of an accredited federal or DoD CI training academy . Bachelor's or post-graduate degree in a Science, Technology, Engineering, or Mathematics discipline . Possession of a DoD Cyber Crimes Investigator certification . Significant experience with malware analysis and cyber risk automation tools . Clearance Requirements: An active TS/SCI with the ability to obtain and maintain a Polygraph. Physical Requirements: Must be able to remain in a stationary position 50% . Needs to occasionally move about inside the office to access file cabinets, office machinery, etc . Frequently communicates with co-workers, management, and customers, which may involve delivering presentations . Must be able to exchange accurate information in these situations .

MANTECH seeks a motivated, career and customer-oriented Cybersecurity System Security Engineer (CSSE) - III to join our team in El Segundo, CA. In this role, you will provide critical support within Special Access Programs (SAPs) supporting SSC and AFSPC acquisition programs. You will deliver daily technical support across Collateral, Sensitive Compartmented Information (SCI), and SAP activities to ensure systems meet essential NIST Cybersecurity requirements for system assessment and authorization in a full-time, on-site environment. Responsibilities Lead a team of System Security Engineers and Certification Analysts ensuring customer national and international security interests are protected during acquisition system design and testing. Chair and co-chair customer and SAP community Cybersecurity working groups while actively participating in Systems Security Engineering IPT reviews. Perform oversight for the development, implementation, and evaluation of information system security program policies with emphasis on SAP network infrastructures. Provide expert-level consultation and technical services on all aspects of Information Security and system designs. Develop and provide Cybersecurity risk management recommendations, Program Protection Plans, and Cybersecurity Strategies to the customer. Assist with site activation activities, design reviews, and test and evaluation of systems. Work directly with approval and accreditation authorities to successfully obtain systems' Authorization to Operate (ATO). Minimum Qualifications Bachelor's degree in a related discipline an additional 4 years of related experience may be accepted in lieu of degree. 12+ years of total experience, including a minimum of 8 years of experience within an SCI or SAR environment. 4 years of direct Special Access Program (SAP) relevant experience. Must meet DoD Directive 8570.01-M/8140 requirements for Information Assurance Technician (IAT) Level 3 and Information Assurance Manager (IAM) Level 3 within 6 months of hire. Full understanding of Risk Management Framework (RMF) and Joint SAP Implementation Guide (JSIG) processes for system accreditation. Preferred Qualifications Familiarity with DoD security policies, manuals, and appropriate ICDs, JAFANs, and related guiding policy documents. Proven ability to work in a dynamic environment and effectively interact with DoD, military, civilian, and industry partners. Strong working knowledge of Microsoft Office applications including Word, PowerPoint, and Excel. Possess a high degree of originality, creativity, and initiative while requiring minimal supervision. Clearance Requirements Current Top-Secret Clearance with SCI Eligibility. Must be eligible for access to Special Access Programs (SAP). Willingness to submit to a Counterintelligence polygraph. Physical Requirements Must be willing to travel within the organizational Area of Responsibility (AOR), including both air and ground transportation. Person in this position may remain in a stationary position 50% of the time in closed-area offices. Must be able to occasionally move about inside and outside of the office to access files, cabinets, and safes, or install and remove computer-related equipment.

MANTECH seeks a motivated, career and customer-oriented WARGAME DEVELOPER to join our team in QUANTICO, VA. Join the vanguard of the Marine Corps Wargaming Division as we modernize the decision environment. In this role, you will be instrumental in assisting with the transition from traditional wargaming into a high-fidelity digital future, ensuring that our nation's senior leaders have the most sophisticated tools and insights to shape future force design. Responsibilities include but are not limited to: Design and produce high-quality physical player aids and reference guides while leading their evolution into interactive digital interfaces. Develop, operate, maintain, and archive simulation databases using government-provided M&S tools to enhance both tabletop and digital exercises in preparation and during wargame execution. Develop an interface to modeling and simulations tools that can be used in game play and operate complex digital tools during wargame execution, translating technical outputs into real-time "so-what" narratives for senior level decision makers. Bridge the gap between analog play and digital environments, evangelizing the capability and utilization methods of new tools to help the customer reach digital maturity. Assist the analysts in developing tools to capture player decisions and telemetry across both formats, ensuring analysts have robust data for post-game reconstruction. Partner with designers and developers to refine mechanics that accurately reflect Marine Corps capabilities while remaining intuitive and "playable" for senior stakeholders and lead the test and an evaluation process of a game design prior to gameplay. Minimum Qualifications: Bachelor's Degree and at least 4 years' experience in wargaming, military modeling and simulation, or military operations. A minimum of 10 years of related experience in lieu of degree. Proficiency with graphic design and layout software (e.g., Adobe Creative Cloud, Power Point, etc.) to produce professional-grade player aids and products.) Capacity to quickly learn, master, and operate new software-based modeling and simulation tools. Experience developing player-facing products, reference guides, or game mechanics manuals. Ability to provide examples of product development work (I.e. reference guides, branded materials, etc.) Preferred Qualifications: Familiarity with the transition from analog tabletop exercises (TTX) to integrated digital environments. Experience with government-provided simulation tools such as AFSIM, Command PE, or similar platforms. Prior experience supporting the Marine Corps or other Federal wargaming entities. The ability to conduct research and capture detailed data inputs needed for game fidelity and coordinating with intel branches to capture detailed data for game play. Familiarity in government and commercial game engines Clearance Requirements: Must have a current and active TS/SCI clearance. Physical Requirements: Must be able and willing to perform occasional manual labor and warehouse duties, with the ability to lift up to 50 pounds. Must be able to remain in a stationary position 50% of the time.

MANTECH seeks a motivated, career, and customer-oriented Information Systems Security Officer (ISSO) - I to join our team in the Vandenberg Space Force Base, CA area . In this role, you will provide critical day-to-day security support for Collateral, Sensitive Compartmented Information (SCI), and Special Access Program (SAP) activities supporting SSC and AFSPC mission areas. Responsibilities Review, prepare, and update AIS accreditation packages and Body of Evidence documentation. Perform AIS self-inspections, conduct security surveys, and provide security review of system test plans. Identify AIS vulnerabilities, implement countermeasures, and track inspection responses. Maintain AIS security records, system baselines, and Co-Utilization Agreements for network nodes. Ensure AIS and network nodes are operated, maintained, and disposed of per security policies. Assist Department of Defense and contractor organizations with certification and accreditation efforts. Conduct and track AIS security training for organizational personnel. Minimum Qualifications High School Diploma/GED with 4 years of experience, or a Bachelor's degree with 1+ years of related experience. Minimum 1 year of Special Access Program (SAP) related experience. Must meet position and certification requirements outlined in DoD Directive 8570.01-M for information Assurance Technician Level 2 within 6 months of the date of hire (i.e., Security Plus CE, CCNA-Security; CySA+) Active DoD 8570.01-M IAT Level II certification (e.g., Security+ CE, CCNA-Security, CySA+) or ability to obtain within 6 months. Completion of training on Joint Security Implementation Guidance (JSIG) and Risk Management Framework (RMF). Preferred Qualifications Familiarity with ICDs, JAFANs, DoD Manuals, and associated security policy documents. Experience working effectively in dynamic environments with DoD, military, civilian, and industry partners. Proficiency with Microsoft Office tools (Word, PowerPoint, and Excel). Clearance Requirements Current Top-Secret Clearance with SCI Eligibility US Citizenship is required. Candidate must be eligible for access to Special Access Programs. Willingness to submit to a Counterintelligence polygraph. Physical Requirements This position is full-time on-site (0730 -1630) at Vandenberg Space Force. Ability and willingness to travel within the organizational Area of Responsibility via air and ground. The person in this position must be able to remain in a stationary position for extended periods in closed-area offices. Must be able to occasionally move about inside and outside the office to access files, cabinets, safes, and install or remove computer-related equipment.

MANTECH seeks a motivated, career and customer-oriented SIMULATION DEVELOPER to join our team in QUANTICO, VA Join a high-impact team supporting the Marine Corps Warfighting Lab's transition to digital wargaming. As a Simulation Developer, you will serve as a trusted advisor to our customers, ensuring the technical architecture of wargames is robust and reliable while directly shaping the tools used to prepare Marines for the future fight. Responsibilities include but are not limited to: Designs, develops, and sustains simulation models and environments using a variety of programming languages, tools, and data sources Integrates models and simulations into larger system architectures and supports Marine Corps Warfighting Laboratory (MCWL) Wargaming Division efforts for interoperability testing and model orchestration Collaborates with engineers, analysts, and operational subject matter experts to enhance model fidelity and ensure simulation accuracy Implements new features, conducts model testing and validation, and troubleshoots issues across evolving simulation platforms Leads and supports planning, coordination, and documentation activities for simulation projects, including data collection, stakeholder alignment, and capability tracking Minimum Qualifications: Bachelor's degree in Computer Science, Software Engineering, Game Development, or a related technical field Minimum of 7 years of software development experience focused on simulation or game-based environments. A total of 9 years with an associates degree and 10 years' experience without a degree. Proficiency in programming languages such as C++, C#, Python, or Java Experience with simulation platforms or engines such as AFSIM, NGTS, OneSAF, Unity, Unreal Engine, Simio, or Arena Familiarity with version control systems and collaborative software development workflows Preferred Qualifications: Understanding of modeling and simulation principles in military or operational contexts Familiarity with mission engineering, wargaming, campaign analysis, or Naval Capabilities Integration Process (NCIP), and associated military systems/processes Knowledge of 3D graphics, physics engines, and database management systems (e.g., SQL) Experience applying Agile or Scrum development methodologies in simulation projects Strong communication, analytical, and cross-functional collaboration skills Clearance Requirements: Must possess a current/active TS/SCI security clearance. Physical Requirements: Must be able and willing to perform occasional manual labor and warehouse duties, with the ability to lift up to 50 pounds. Must be able to remain in a stationary position 50% of the time. Needs to occasionally move about inside the office to access file cabinets, office machinery, etc. Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations

MANTECH seeks a motivated, career and customer-oriented SOFTWARE DEVELOPER (MODELING AND SIMULATION) to join our team in QUANTICO, VA Join a high-impact team supporting the Marine Corps Warfighting Lab's transition to digital wargaming. As a Simulation Developer, you will serve as a trusted advisor to our customers, ensuring the technical architecture of wargames is robust and reliable while directly shaping the tools used to prepare Marines for the future fight. Responsibilities include but are not limited to: Designs, develops, and sustains simulation models and environments using a variety of programming languages, tools, and data sources Integrates models and simulations into larger system architectures and supports Marine Corps Warfighting Laboratory (MCWL) Wargaming Division efforts for interoperability testing and model orchestration Collaborates with engineers, analysts, and operational subject matter experts to enhance model fidelity and ensure simulation accuracy Implements new features, conducts model testing and validation, and troubleshoots issues across evolving simulation platforms Leads and supports planning, coordination, and documentation activities for simulation projects, including data collection, stakeholder alignment, and capability tracking Minimum Qualifications: Bachelor's degree in Computer Science, Software Engineering, Game Development, or a related technical field Minimum of 7 years of software development experience focused on simulation or game-based environments. A total of 9 years with an associates degree and 10 years' experience without a degree. Proficiency in programming languages such as C++, C#, Python, or Java Experience with simulation platforms or engines such as AFSIM, NGTS, OneSAF, Unity, Unreal Engine, Simio, or Arena Familiarity with version control systems and collaborative software development workflows Preferred Qualifications: Understanding of modeling and simulation principles in military or operational contexts Familiarity with mission engineering, wargaming, campaign analysis, or Naval Capabilities Integration Process (NCIP), and associated military systems/processes Knowledge of 3D graphics, physics engines, and database management systems (e.g., SQL) Experience applying Agile or Scrum development methodologies in simulation projects Strong communication, analytical, and cross-functional collaboration skills Clearance Requirements: Must possess a current/active TS/SCI security clearance. Physical Requirements: Must be able and willing to perform occasional manual labor and warehouse duties, with the ability to lift up to 50 pounds. Must be able to remain in a stationary position 50% of the time. Needs to occasionally move about inside the office to access file cabinets, office machinery, etc. Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations

MANTECH seeks a motivated, career and customer-oriented Senior Cloud Information System Security Officer (ISSO) to join our team in Washington, D.C., Chantilly, VA or Quantico, VA Responsibilities include, but are not limited to: Ensure the day-to-day implementation, oversight, continuous monitoring, and maintenance of the security configuration, practices, and procedures for each IS Provide liaison support between the system owner and other IS security personnel Ensure that selected security controls are implemented and operating as intended during all phases of the IS lifecycle. Ensure that system security documentation is developed, maintained, reviewed, and updated on a continuous basis Conduct required IS vulnerability scans according to risk assessment parameters. Coordinate system owner concurrence for correction or mitigation actions. Develop Plan of Action and Milestones (POAMs) in response to reported security vulnerabilities. Manage the risks to ISs and other FBI assets by coordinating appropriate correction or mitigation actions, and oversee and track the timely completion of (POAMs) Monitor security controls for FBI ISs to maintain security Authorized to Operate (ATO). Upload all security control evidence to the Governance, Risk, and Compliance (GRC) application to support security control implementation during the monitoring phase Ensure that changes to an FBI IS, its environment, and/or operational needs that may affect the authorization status are reported to the system owner and IS Security Manager (ISSM). Ensure the removal and retirement of ISs being decommissioned in coordination with the system owner, ISSM, and ISSR Minimum Qualifications: At least seven years' experience as an Information Systems Security Officer (ISSO) or similar role at a cleared facility At least eight years' experience working in the Information Technology sector with a bachelor's degree, 6 years with master's degree, 10 years with associates OR 12 years with high school diploma. Must possess a current DoD 8140 certification Familiarity with the use and operation of security tools including Tenable Nessus and/or Security Center, IBM Guardium, HP Weblnspect, Network Mapper (NMAP), and/or similar applications Preferred Qualification: A bachelor's or advanced degree in Computer Science, Cybersecurity, or other cyber discipline Clearance Requirements: Must have a current/active Top Secret security clearance and be willing and able to obtain SCI eligibility prior to starting this position. Selected candidate may be required to undergo a Polygraph. Physical Requirements: Must be able to remain in a stationary position 50% Needs to occasionally move about inside the office to access file cabinets, office machinery, etc. Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer Often positions self to maintain computers in the lab, including under the desks and in the server closet Frequently communicates with co-workers, management and customers, which may involve delivering presentations Must be able to exchange accurate information in these situations

MANTECH seeks a motivated, career and customer-orien ted Information System Security Officer to support our contract under Marine Corps Systems Command (MCSC) out of Stafford, VA. The successful candidate will support the security compliance, and ongoing authorization of United Stated Marine Corps Systems. Responsibiliti es include but are not limited to: Provide cybersecurity information assurance support for Marine Corps information, intelligence, and cybersecurity programs. Support and assist in the development of Risk Management Framework (RMF) security authorization packages based on current doctrine. Assist government programs with generating and maintaining security documentation such as System Security Plans , Backup and Recovery Plans, Contingency Plans, and System Security Plan of Action and Milestones (POA&Ms) to ensure compliance with government security policies and procedures. Perform vulnerability/risk analyses of assigned information systems during all phases of the System Development Life Cycle; analyze vulnerability scan results / DISA STIGs, and generate and maintain system security POA&Ms. Interpret cybersecurity requirements into technical solutions and analyze system configurations to determine, maintain, and improve security posture. Recommend proper system configuration and administration control procedures to enhance system security, performance, and to ensure assigned Marine Corps information systems are compliant with applicable laws and policies and meet cybersecurity requirements outlined in the Defense Acquisition System guidance as well as all applicable Department of Defense (DoD), Department of the Navy (DoN), and Marine Corps cybersecurity directives and instructions. Provide cybersecurity support for information systems to address policymaking, programmatic and technical assistance, and all aspects of planning, documentation, engineering, and operating in secure environments. Minimum Q ualifications: Bachelor's Degree and at least 5 years of related ISSO experience (additional 2 years of experience may be substituted in lieu of degree. Must be compliant and certified at the DoW 8140 intermediate level, thus will need a CASP, Security+, CISSP, or CISM certification. Experience working with RMF, NIST, and other federal guidelines. Experience utilizing assessment tools (e.g., ACAS, SCAP, HBSS) and RMF process tools (e.g., MCCAST, eMASS, eArcher, etc.). Security Testing and Evaluation Experience. Experience with Assured Compliance Assessment Solution (ACAS), STIGs, and SCC. Preferred Q ualifications: Marine Corps ISSO experience DoD Information Technology Portfolio Repository, Department of the Navy experience preferred. Knowledge of information security systems and applications for DoD projects (Marine Corps programs preferred). Knowledge of DoDI 8510.01; NIST 800 series publications; Intelligence Community Directive (ICD) 503; DoD Intelligence Information System (DoDIIS)-Joint Security Implementation Guide (DJSIG); Intelligence Community Information Technology Systems Security Risk Management; emerging cybersecurity policies; and all other policies, orders, and directives pertaining to the role. Clearance Requirements: Must have a current / active Top Secret / SCI clearance. Physical Requirements: Sedentary work

MANTECH seeks a motivated, career and customer-oriented Senior Cloud Information System Security Engineer (ISSE) to join our team in Washington, D.C Responsibilities include, but are not limited to: Identify information protection needs for an IS and Network Environment. Define IS and Network Environment security requirements in accordance with applicable cybersecurity requirements Design security architectures for use within the IS and Network Environment. Design and develop cybersecurity-enabled products for use within an IS and Network Environment Integrate and/or implement security with Cross Domain Solutions (CDS) for use within an IS and Network Environment Develop and implement security designs for new or existing network system(s). Ensure that the design of hardware, operating systems, and software applications adequately address cybersecurity requirements for the IS and Network Environment Design, develop, and implement network security measures that provide confidentiality, integrity, availability, authentication, and non-repudiation. Design, develop, and implement specific cybersecurity countermeasures for the IS and Network Environment Develop interface specifications for the IS and Network Environment. Develop approaches to mitigate IS and Network Environment vulnerabilities and recommend changes to network or network system components as needed Ensure that network system(s) designs support the incorporation of FBI directed cybersecurity vulnerability solutions Minimum Qualifications: Must meet one of the following levels of experience: A high school diploma/GED and 14 years' experience, an Associate's degree and 10 years' experience, a Bachelors degree and 8 years' experience, or a Master's and 6 years' experience. Must possess a current DoD 8140 level III certification Familiarity with the use and operation of security tools including: Tenable Nessus and/or Security Center, IBM Guardium, HP WeblInspect, Network Mapper (NMAP), and/or similar applications. Working knowledge of the National Institute of Standards and Technology (NIST) Risk Management Framework (RMF) and ATO processes. Preferred Qualifications: Degree in Computer Science, Cybersecurity, or other cyber discipline. Clearance Requirements: Must have a current/active Top Secret security clearance and be willing and able to obtain SCI eligibility prior to start. Selected candidate must be willing to undergo a Polygraph. Physical Requirements: Must be able to remain in a stationary position 50% Needs to occasionally move about inside the office to access file cabinets, office machinery, etc. Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer Often positions self to maintain computers in the lab, including under the desks and in the server closet Frequently communicates with co-workers, management and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations