ManTech

Mantech seeks a motivated, career driven, and customer-focused Information System Security Officer (ISSO) to join our team in Columbia, Maryland. You will play a critical role in supporting enterprise infrastructure capabilities for a global, mission-focused workforce. As an ISSO, you will work alongside customers, Integrated Product Teams (IPTs), and vendors to support the implementation and compliance of advanced EIT capabilities through Data Center & Compute Services. You will manage cybersecurity documentation, assess system vulnerabilities, and support the Risk Management Framework (RMF) lifecycle in alignment with Sponsor policies. Responsibilities include, but are not limited to: Update and maintain hardware and software inventory records, including associated change logs Support and coordinate Secure the Enterprise (STE) and Secure the Network (STN) activities Review and address Xacta notices and ensure compliance documentation is accurate and current Complete SEAR audit log records in accordance with Sponsor standards Track, review, and resolve POAMs (Plan of Action and Milestones) related to IAVA/IAVAx findings Develop and maintain System Security Plans (SSPs) for both new and existing systems Analyze vulnerability scan results and collaborate with system owners to implement remediation Leverage sponsor tools such as Gatekeeper, Xacta, SEAR, and LatteArt in daily operations Minimum Qualifications: Bachelor's degree with 12+ years of relevant experience OR associate's degree with 15 years of relevant experience OR high school diploma/GED with 20 years of relevant experience Experience with Xacta, LatteArt and other sponsor tools Experience managing POAMs, performing audit log reviews, and maintaining secure system inventories IAM I certification (DoD 8140 required upon start of employment. Acceptable certifications include CAP/CND/Cloud+/GSLC/Security CE/HCISSP/CASP+CE/CISM/CISSP/ or CCISO) Preferred Qualifications: Knowledge of STE and STN processes and coordination Experience with Gatekeeper, SEAR, SCANBOY Experience with the Service Now (SNOW) platform Clearance Requirements: Must possess and maintain a current/active TS/SCI clearance with Polygraph Physical Requirements: Must be able to remain in a stationary position 50% of the time Occasionally moves about inside the office to access file cabinets, office machinery, etc. Frequently communicates with co-workers, management, and customers, including delivering presentations. Must be able to exchange accurate information in these situations

MANTECH seeks a motivated, career and customer-oriented LANSystem Integration & Testing Technician to join our team in Herndon, VA. In this role, you will provide reliable, high-quality LAN systems integration and network support by installing, configuring, monitoring, and troubleshooting enterprise network infrastructure, ensuring secure, efficient, and uninterrupted operations while delivering responsive technical support to customers and collaborating effectively with cross-functional teams. Responsibilities include, but are not limited to: Troubleshoot, install, configure, and maintain Cisco routers, switches, firewalls, and related network hardware. Provide technical expertise in managing public and/or private networks, including testing and analysis of network control software, servers, and transmission facilities. Install, support, and maintain LAN/WAN environments; evaluate and recommend network hardware and software upgrades. Perform technical analyses of software, hardware, and network performance using diagnostic and monitoring tools to ensure efficient operations. Monitor data traffic and control network resources to maintain high-quality, reliable network performance. Diagnose and resolve complex network, system, and PC hardware/software issues while exercising sound judgment and supporting customer, operational, and project activities across teams. Local travel may be required between customer buildings or temporary assignment to an alternate location in support of special projects. Member of a team comprised of a variety of skills that provide coverage from 6:00 a.m. - 6:00 p.m.; may need to work extended hours during critical peaks and be available to meet last minute requests. Basic Qualifications: High School Diploma with 11+ years of experience, Associates Degree with 9+ years of experience, or a Bachelor's Degree with 7+ years of experience. Demonstrated hands-on experience troubleshooting, installing, configuring, and maintaining enterprise network equipment (Cisco routers, switches, firewalls). Experience supporting LAN/WAN environments, including network monitoring, diagnostics, and performance optimization. Ability to independently diagnose and resolve complex network, hardware, and software issues in a fast-paced operational environment. Able to work independently with limited supervision while managing, prioritizing, and executing multiple concurrent projects, and effectively diagnosing and resolving network issues in a fast-paced environment. Proven ability to build and maintain constructive relationships among customers, stakeholders, technical teams, and contractors across the customer base. Preferred Qualifications: Microsoft Certified Professional (MCP), Cisco certifications (CCNA, CCNP, or higher), or other relevant industry-recognized IT certifications (e.g., CompTIA Network+, Security+). Effective written and verbal communication skills, with experience supporting customers and collaborating across technical teams Demonstrated problem solving skills and ability to provide solutions and work with customer in providing resolution. Self-starter and work with a clear and defined mission. Security Clearance Requirements: Current/active TS/SCI with Polygraph. Physical Requirements: Ability to remain stationary for at least 50% of the time. Ability to operate computers, phones, and standard office equipment for extended periods. Ability to move between offices and buildings, including under desks, raised floors, and server closets, some of which may be confined spaces. Ability to lift and move IT or AV equipment weighing 50+ pounds, using carts or team lifts as needed. Must be able to ascend/descend ladders (10+ feet) while pulling cables and adjusting equipment.

MANTECH seeks a skilled and mission-focused CNO Software Engineer to join our team in Hanover, MD. In this role, you will contribute to the development of advanced CNO capabilities that directly support national security. You'll work in a collaborative environment focused on solving complex technical challenges in support of our customer's most critical missions. Responsibilities include but are not limited to: Design and develop new hardware- or software-based CNO capabilities Assists with the design, development, documentation, testing, and debugging of applications software and systems Develop data queries for existing or proposed databases or data repositories Apply knowledge of security concepts and network technologies Ensure software engineering standards are consistently met Minimum Qualifications: BS Degree in a technical discipline and 7+ years of experience in software development or software engineering, or High School Diploma and 11+ experience in software development or software engineering Experience in Python or C/C++ programming Experience with troubleshooting and debugging systems Preferred Qualifications: Experience with analyzing user requirements to derive software design and performance requirements Experience in software analysis or reverse engineering Understanding of assembly programming concepts Understanding of CNO development concepts Familiarity with unit testing frameworks and practices Clearance Requirements: Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able to obtain another polygraph prior to start, if required Physical Requirements: Must be able to remain in a stationary position 50% of the time

MANTECH seeks a skilled and mission-focused Associate CNO Developer to join our team in Hanover, MD. In this role, you will contribute to the development of mission-critical offensive cyber capabilities and drive excellence in advanced Computer Network Operations (CNO). You'll be part of a dynamic team working on next-generation solutions that safeguard our national security systems. Responsibilities include but are not limited to: Design and develop new hardware- or software-based CNO capabilities Assists with the design, development, documentation, testing, and debugging of applications software and systems Apply knowledge of security concepts and network technologies Ensure software engineering standards are consistently met Minimum Qualifications: BS Degree in a technical discipline or High School Diploma and 4+ years of technical experience Experience in Python or C/C++ programming Experience with troubleshooting and debugging Preferred Qualifications: Experience with networking (TCP/IP) and socket-level programming Experience with low-level system internals across one or more platforms Experience in software analysis or reverse engineering Experience with developing CNO capabilities Understanding of unit testing frameworks and practices Understanding of assembly programming concepts Familiarity with Atlassian tools such as JIRA, Confluence, and Crucible Security Clearance Requirements: Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able to obtain another polygraph prior to start, if required. Physical Requirements: Ability to remain stationary for extended periods (50% of the time) and operate computer equipment and office machinery.

MANTECH seeks an experience and mission focused Senior CNO Developer to join our team in Hanover, MD. In this role, you will contribute to the development of mission-critical cyber capabilities and lead efforts in advanced Computer Network Operations (CNO) and drive technical excellence in CNO development. You'll be part of a dynamic team working on next-generation solutions that safeguard national security systems. Responsibilities include but are not limited to: Designing and developing new hardware- or software-based Computer Network Operations (CNO) capabilities Managing the design, development, documentation, testing, and debugging of software applications and systems Design and develop end-to-end data flow and tasking for CNO tools developed Applying expert knowledge of network and security concepts to support capability development Communicating status updates and technical progress to leadership and stakeholders Ensuring software quality and compliance with development standards Minimum Qualifications: BS degree in a technical discipline and 8+ years of technical work experience, or MS Degree in a technical discipline and 6+ years of technical work experience, or High school diploma and 12+ years of technical work experience Experience in Python and C/C++ programming languages Experience with troubleshooting and debugging Experience with low-level system internals across one or more platforms (e.g., Windows, Unix, Mobile, or network devices) Experience with networking protocols (TCP/IP) and socket-level programming Experience with developing CNO capabilities Experience leading technical CNO solutions Preferred Qualifications: Experience in software analysis or reverse engineering Experience with assembly language programming Experience with unit testing frameworks and practices Experience using Atlassian tools (JIRA, Confluence, Crucible) Clearance Requirements: Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able to obtain another polygraph prior to start, if required Physical Requirements: Must be able to remain in a stationary position at least 50% of the time.

MANTECH seeks a skilled and mission focused CNO Developer to join our team in Hanover, MD. In this role, you will contribute to the development of mission-critical offensive cyber capabilities and drive excellence in advanced Computer Network Operations (CNO). You'll be part of a dynamic team working on next-generation solutions that safeguard our national security systems. Responsibilities include but are not limited to: Design and develop new hardware- or software-based Computer Network Operations (CNO) capabilities Perform design, development, documentation, testing, and debugging of software applications and systems Apply knowledge of network and security concepts to support capability development Communicate status updates and technical progress to leadership and stakeholders Ensure software quality and compliance with development standards Minimum Qualifications: BS degree and 4+ years of technical work experience, or MS Degree and 2+ years of technical work experience, or High school diploma and 8+ years of technical work experience. Experience in Python or C/C++ programming languages Experience with troubleshooting and debugging Preferred Qualifications: Experience with networking protocols (TCP/IP) and socket-level programming Experience with developing CNO capabilities Experience with low-level system internals across one or more platforms (e.g., Windows, Unix, Mobile, or network devices) Experience in software analysis or reverse engineering Experience using Atlassian tools (JIRA, Confluence, Crucible) Understanding of assembly language programming concepts Understanding of unit testing frameworks and practices Clearance Requirements: Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able to obtain another polygraph prior to start, if required. Physical Requirements: Must be able to remain in a stationary position at least 50% of the time.

MANTECH seeks a highly experienced and innovative Expert CNO Developer to join our team in Hanover, MD. In this role, you will lead the development of mission-critical cyber capabilities and lead efforts in advanced Computer Network Operations (CNO) and drive technical excellence in CNO development. You'll be part of a dynamic team working on next-generation solutions that safeguard national security systems. Responsibilities include but are not limited to: Designing and developing new hardware- or software-based Computer Network Operations (CNO) capabilities Managing the design, development, documentation, testing, and debugging of software applications and systems Design and develop end-to-end data flow and tasking for CNO tools developed Applying expert knowledge of network and security concepts to support capability development Communicating status updates and technical progress to leadership and stakeholders Ensuring software quality and compliance with development standards Minimum Qualifications: BS degree in a relevant technical discipline and 12+ years of technical work experience, or MS Degree in a relevant technical discipline and 10+ years of technical work experience, or PhD in a relevant technical discipline and 8+ years of technical work experience, or High school diploma and 16+ years of technical work experience Experience in Python and C/C++ programming languages Experience with troubleshooting and debugging complex systems Experience with low-level system internals across one or more platforms (e.g., Windows, Unix, Mobile, or network devices) Experience with networking protocols (TCP/IP) and socket-level programming Experience with developing CNO capabilities Experience managing and leading the development of technical CNO solutions Preferred Qualifications: Experience in software analysis or reverse engineering Experience with assembly language programming concepts Experience with unit testing frameworks and practices Experience using Atlassian tools (JIRA, Confluence, Crucible) Clearance Requirements: Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able to obtain another polygraph prior to start, if required Physical Requirements: Must be able to remain in a stationary position at least 50% of the time.

MANTECH seeks a skilled and mission-focused Associate CNO Software Engineer to join our team in Hanover, MD. In this role, you will contribute to the development of advanced CNO capabilities that directly support national security. You'll work in a collaborative environment focused on solving complex technical challenges in support of our customer's most critical missions. Responsibilities include but are not limited to: Design and develop new hardware- or software-based CNO capabilities Assists with the design, development, documentation, testing, and debugging of applications software and systems Develop simple data queries for existing or proposed databases or data repositories Apply knowledge of security concepts and network technologies Ensure software engineering standards are consistently met Minimum Qualifications: BS Degree in a technical discipline or High School Diploma and 4+ years of experience in software development or software engineering Experience in Python or C/C++ programming Experience with troubleshooting and debugging systems Preferred Qualifications: Experience with analyzing user requirements to derive software design and performance requirements Experience in software analysis or reverse engineering Understanding of assembly programming concepts Understanding of CNO development concepts Familiarity with unit testing frameworks and practices Clearance Requirements: Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able to obtain another polygraph prior to start, if required Physical Requirements: Must be able to remain in a stationary position 50% of the time

MANTECH seeks a motivated, career and customer-oriented Voice Over Internet Protocol (VOIP) Technician to join our team in Annapolis Junction, MD. The VOIP SME is responsible for supporting Cisco Unified Call Managers for a global footprint in addition to POTS lines, both supporting e911 services in support of the Government customer. Responsibilities include but are not limited to: Provides broad telephony support from administrator level configurations to in-depth technical solutions for critical clients over secure and nonsecure networks. Works as the SME for engineers, surveyors, installers, and project managers to develop and execute end-to-end solutions for various vendor products. May manage multiple communication projects that provide critical response efforts resulting in streamline services for analog, digital, and video requirements. Provides administration to voicemail servers, call managers, and emergency responders involving T1, fiber, Ethernet, multiplexing, copper wrap, and cellular servicing. Configures and troubleshoots multi-vendor hardware and software systems to enable users to perform complex defense operations. Engages support for the escalation and communication of status to agency management and internal customers. Support clients across multi-level service platforms, executing in-depth solutions to resolve real-time incidents and requests. Provide support to TCP/IP network protocols that rely on TCP, Session Initiation Protocol, session description protocol, and VoIP codecs to provide reliable service. . Monitor, tune, and support basic existing telephone systems and network infrastructure to ensure stable, reliable, secure, and efficient communications operations. Support Identification, assessment, and development of detailed requirements such as supporting re-architecture of network segments in order to facilitate new requirements, technologies and growth. Support lien mitigation efforts related to maintaining a compliant System Security Plan and associated network security and communicate effectively with a wide variety of technical and non-technical audiences, including customers, team partners, and other staff members. Travel is required in support of service requirements 10-20%. This position also offers opportunities to support other bodies of work, at different locations, and to travel both CONUS and OCONUS (no hostile areas) for AVMM support. Minimum Qualifications: Bachelor's degree and 6 years of relevant experience or 4 years of experience may be substituted for education Experience with service management knowledge Experience with support integration of VOIP systems to include the planning, design, installation, maintenance, management, and coordination of the deliverable IATT Level 2 certification, such as Security+ CE Understanding of IT equipment and service life as well as planning and implementation of equipment replacement Experience with presentations with the ability to convey technical and business concepts to various audiences, ability to handle complex customer situations and interact with all levels of personnel to provide a quick and effective resolution. Preferred Qualifications: Experience with customer ticketing systems ServiceNow Support to network devices (including servers) in support of AVMM/IPTV/Streaming services IATT Level 2 certification, such as Security+ CE PMP Certification, and ITIL Foundations V3 certification desired Experience with large scale enterprise IT contracts. Clearance Requirements: Must have a current/active TS/SCI w/ Poly Physical Requirements: The person must be able to handle IT of a reasonable nature without assistance. Move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communication, which may involve delivering presentations.

MANTECH seeks a motivated, career and customer-oriented SeniorNetAppsStorage Architect to join our team in Laurel, MD. Join ManTech's mission-focused national security team delivering enterprise infrastructure capabilities for a global workforce. This role will support the Intelligence Community's Enterprise Information Technology (EIT) platform in Maryland. This role supports infrastructure associated with Data Center & Computing Services, Integrated Product Teams (IPT), and vendors to deliver services to ManTech's customers in the IC. Responsibilities include, but are not limited to the following: Design, architect, configure, deploy, upgrade, and support various storage and backup platforms and associated management tools. Participate in the evaluation, deployment, management, and integration of new technologies in alignment with other engineers, architects, and technical service lanes. Provides technical leadership and is responsible for the development of new storage infrastructure and Information Lifecycle Management designs, including requirements and analysis. Shares ownership of the operational responsibility for storage provisioning and availability at government customer site with the Customer/Government Storage Manager. Keep abreast of current developments in storage and backup technology to assist Federal staff in assessing the future direction of storage and backup technology. Responsible for the delivery of the technical architectural design, strategies and plans that will be delivered on an ongoing basis. Create and maintain documentation: logical/physical diagrams, run books, and other technical engineering documents. Performs end-to-end analysis on the performance of the storage infrastructure, presents findings, and submits recommendations for improvement. Minimum/Basic Qualifications: Fifteen (15) years' experience in storage operations or storage architecture, with a focus on NetApps. Bachelor of Science (BS) Degree from an accredited university in a technical field is required. Five (5) additional years of experience in storage operations may be substituted for degree. Experience with SAN, NAS, Fiber Channel and iSCSI storage implementations. Proven proficiency in storage solutions including but not limited to block, nfs, sif, s3, sharefile systems, and nas. Strong understanding of fundamental hardware concepts: disk, memory, CPU, NIC, HBA, firmware, RAID, performance concepts (I/O, paging, swapping, system calls), iSCSI, Fiber Channel, Ethernet. Experience connecting storage arrays to Hypervisor Technologies (NUTANIX, VMWARE VCF, OpenStack). Preferred Qualifications: Twenty (20) years' experience in overall storage operations or storage architecture. Of that, ten (10) years of experience in the specific storage technology that is in the customer environment. Clearance Requirements: Must have a current active Top Secret/SCI with Polygraph Physical Requirements: Sedentary work, speaking, standing, talking, walking, working with computers, working with data, working with numbers and figures, ability to handle stress & work under pressure, ability to use MS Office and a PC, analytical or critical thinking skills, leadership and listening skills, multi-tasking, ability, negotiating skills, oral & written communication skills, presentation skills, project management ability and skills, computer operating skills, and team building skills

MANTECH seeks a highly experienced and innovative Expert CNO Developer to join our team in Aurora, CO. In this role, you will lead the development of mission-critical cyber capabilities and lead efforts in advanced Computer Network Operations (CNO) and drive technical excellence in CNO development. You'll be part of a dynamic team working on next-generation solutions that safeguard national security systems. Responsibilities include but are not limited to: Designing and developing new hardware- or software-based Computer Network Operations (CNO) capabilities Managing the design, development, documentation, testing, and debugging of software applications and systems Design and develop end-to-end data flow and tasking for CNO tools developed Applying expert knowledge of network and security concepts to support capability development Communicating status updates and technical progress to leadership and stakeholders Ensuring software quality and compliance with development standards Minimum Qualifications: BS degree in a relevant technical discipline and 12+ years of technical work experience, or MS Degree in a relevant technical discipline and 10+ years of technical work experience, or PhD in a relevant technical discipline and 8+ years of technical work experience, or High school diploma and 16+ years of technical work experience Experience in Python and C/C++ programming languages Experience with troubleshooting and debugging complex systems Experience with low-level system internals across one or more platforms (e.g., Windows, Unix, Mobile, or network devices) Experience with networking protocols (TCP/IP) and socket-level programming Experience with developing CNO capabilities Experience managing and leading the development of technical CNO solutions Preferred Qualifications: Experience in software analysis or reverse engineering Experience with assembly language programming concepts Experience with unit testing frameworks and practices Experience using Atlassian tools (JIRA, Confluence, Crucible) Clearance Requirements: Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able to obtain another polygraph prior to start, if required Physical Requirements: Must be able to remain in a stationary position at least 50% of the time.

MANTECH seeks a motivated, career and customer-oriented Senior Cyber Security Engineer to join our team in Chantilly, VA. This role supports the Comply-to-Connect (C2C) mission by engineering and sustaining secure network infrastructures across classified and unclassified environments. You will work alongside cyber experts to develop solutions that enhance network compliance and security posture across DoD systems. Responsibilities include but are not limited to: Engineer, design, implement, integrate, and sustain Comply-to-Connect (C2C) deployment support to migrate, deploy, improve, and maintain C2C services Manage and maintain appliances, applications, servers, and supporting infrastructure in both classified and unclassified environments Coordinate with the network service provider to develop and maintain network architecture diagrams Evaluate and recommend changes and/or technology upgrades to address performance, standardization, and industry best practices Monitor and investigate C2C performance and faults and recommend improvements Interact with other team members and customers at multiple levels to gather, supply, or coordinate information Support Assessment and Authorization activities related to cybersecurity technologies, where applicable Minimum Qualifications: Bachelor's degree or 4+ years of additional cyber experience in lieu of degree 5+ years of cyber experience Experience with technologies involved in large-scale enterprise network deployments and data centers Experience deploying and/or supporting enterprise security software products such as firewalls, IPS, anti-virus solutions, application firewalls, high availability solutions, network management systems, and virtual systems Knowledge of Windows and Linux systems, general operating system security practices, TCP/IP networking, 802.1x, and network security concepts IAT Level II certification (GSEC, Security+, SSCP, or CCNA-Security) or ability to obtain within 6 months of hire Preferred Qualifications: Experience implementing and using complex software products involving multiple integrated components Real-time, enterprise-level C2C expertise including vendor-agnostic services, open-source trends, and proficiency in DoD integration, engineering, and sustainment processes Experience with Cisco Identity Services Engine (ISE) Experience with tools such as Nmap, Nessus, and tcpdump Clearance Requirements: Must have a current/active TS/SCI with 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 highly technical and mission-focused Expert CNO Software Engineer to join our team in Hanover, MD. In this role, you will develop advanced CNO capabilities that directly support national security. You'll work in a collaborative environment focused on solving complex technical challenges in support of our customer's most critical missions. Responsibilities include but are not limited to: Design and develop new hardware- or software-based CNO capabilities Manage the design, development, documentation, testing, and debugging of applications software and systems Apply expert knowledge of security concepts and network technologies Develop data queries for existing or proposed databases or data repositories Develop or implement algorithms to meet or exceed system performance and functional standards Minimum Qualifications: BS Degree in a technical discipline and 20+ years of technical work experience or High School Diploma and 24+ years of technical work experience Experience in Python or C/C++ programming Experience with troubleshooting and debugging complex systems Experience with low-level system internals across one or more platforms (e.g., Windows, Unix, Mobile, or network devices) Experience with networking protocols (TCP/IP) and socket-level programming Experience with developing CNO capabilities Experience with managing and leading the development of technical CNO solutions and development teams Preferred Qualifications: Experience with programming in assembly languages Experience in software analysis or reverse engineering Experience with unit testing frameworks and practices Experience using Atlassian tools (JIRA, Confluence, Crucible) Clearance Requirements: Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able to obtain another polygraph prior to start, if required Physical Requirements: Must be able to remain in a stationary position 50% of the time

MANTECH seeks a motivated, career and customer-oriented Application Developer to join our team in Chantilly, VA The Application Developer will be dedicated full-time to development and enhancement support for existing applications as well as new development. Responsibilities include but are not limited to: Designing, programming/developing, and modifying software systems, applications, and tools, both existing and potentially new in the future Analyzing user needs and software requirements to determine feasibility of design within time and cost constraints Collaborating with teammates, other service providers, vendors, and users to develop new program features Developing unit and integration tests, in addition to participating in functional and regression tests to ensure programs will produce the desired results and that instructions are correct Correcting errors by making the appropriate changes and then re-checking the program to ensure the desired result was produced. As well as, reviewing help desk messages periodically and working with other teams to troubleshoot and resolve production issues Participating in code reviews by reviewing and incorporating feedback from teammates as well as providing feedback to others based on existing standards and recommended programming practices. Deploying code to development, test, and production environments using existing DevOps infrastructure/tools Minimum Qualifications: High School Diploma/GED with 7+ years of experience in the Information Technology field Strong Java programming/development skills, with hands-on experience Experience with HTML, CSS, JavaScript, and at least one modern front-end framework, preferably Angular Experience with, or knowledge of, the Spring Framework and RESTful services and SQL, ORM libraries such as Hibernate/JPA Experience with Git branching and merging within a team to manage source code Preferred Qualifications Strong ability to manage competing priorities and communication to multiple stakeholders Experience with, or knowledge of, Elasticsearch Experience with, or knowledge of, best practices for developing secure web applications Clearance Requirements: An active TS/SCI with Polygraph Physical Requirements: Use hands to operate a computer and other office productivity machinery, such as a calculator, copy machine and computer printer. The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc. Must be able to remain in a stationary position 50% of the time

MANTECH seeks a motivated, career and customer-oriented LinuxSystem Administrator to join our team in Laurel, MD. Responsibilities Responsibilities include, but are not limited to the following: Ability to analyze user's requirements and high-level system architectures to develop system requirements Provide Tier 1(Help Desk) and Tier 2/3 (Escalation) problem identification, diagnosis, and resolution of problems Provide support to IT systems including day-to-day operations, monitoring, and problem resolution for all the clients/servers/network devices. Provide support for the patching systems and hardware problems and remains involved in the resolution process. Ability to support the planning and test analysis of the DoD Certification/ Accreditation process Ability to install software and hardware applications; upgrade systems with new releases and models Must be able to create accounts, reset passwords, and provide desktop support to customers via phone, tickets, or in-person Must be willing to work a flexible schedule between 6:00am-6:00pm and may be assigned to an evening patching schedule Minimum/Basic Qualifications: Must be proficient with troubleshooting in a Linux Red Hat environment Bachelor's degree in technical discipline from an accredited college or university; an additional 5 years of SA experience might be substituted for a degree is required. 15+ years' experience as a SA in programs and contracts of similar scope, type and complexity is required. IAT II certification (DOD 8140 required within 60 days of starting employment. Acceptable certifications include CCNA-Security, Security+) Preferred Qualifications: Experience with SCANBOY or LatteArt Experience with RHEL 8 or 9 Familiarity with JIRA ticketing system Clearance Requirements: Must be a US Citizen Must have a current active Top Secret/SCI with Polygraph Physical Requirements: The candidate must be able to move, carry and deliver workstations from inside the office to customer's desk. The person in this position must be able to remain in a stationary position 50% of the time. Must communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations.

MANTECH seeks a skilled and mission-focused Associate CNO Developer to join our team in Aurora, Colorado. In this role, you will contribute to the development of mission-critical offensive cyber capabilities and drive excellence in advanced Computer Network Operations (CNO). You'll be part of a dynamic team working on next-generation solutions that safeguard our national security systems. Responsibilities include but are not limited to: Design and develop new hardware- or software-based CNO capabilities Assists with the design, development, documentation, testing, and debugging of applications software and systems Apply knowledge of security concepts and network technologies Ensure software engineering standards are consistently met Minimum Qualifications: BS Degree in a technical discipline or High School Diploma and 4+ years of technical experience Experience in Python or C/C++ programming Experience with troubleshooting and debugging Preferred Qualifications: Experience with networking (TCP/IP) and socket-level programming Experience with low-level system internals across one or more platforms Experience in software analysis or reverse engineering Experience with developing CNO capabilities Understanding of unit testing frameworks and practices Understanding of assembly programming concepts Familiarity with Atlassian tools such as JIRA, Confluence, and Crucible Security Clearance Requirements: Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able to obtain another polygraph prior to start, if required. Physical Requirements: Ability to remain stationary for extended periods (50% of the time) and operate computer equipment and office machinery.

MANTECH seeks a skilled and mission focused CNO Developer to join our team in Aurora, CO. In this role, you will contribute to the development of mission-critical offensive cyber capabilities and drive excellence in advanced Computer Network Operations (CNO). You'll be part of a dynamic team working on next-generation solutions that safeguard our national security systems. Responsibilities include but are not limited to: Design and develop new hardware- or software-based Computer Network Operations (CNO) capabilities Perform design, development, documentation, testing, and debugging of software applications and systems Apply knowledge of network and security concepts to support capability development Communicate status updates and technical progress to leadership and stakeholders Ensure software quality and compliance with development standards Minimum Qualifications: BS degree and 4+ years of technical work experience, or MS Degree and 2+ years of technical work experience, or High school diploma and 8+ years of technical work experience. Experience in Python or C/C++ programming languages Experience with troubleshooting and debugging Preferred Qualifications: Experience with networking protocols (TCP/IP) and socket-level programming Experience with developing CNO capabilities Experience with low-level system internals across one or more platforms (e.g., Windows, Unix, Mobile, or network devices) Experience in software analysis or reverse engineering Experience using Atlassian tools (JIRA, Confluence, Crucible) Understanding of assembly language programming concepts Understanding of unit testing frameworks and practices Clearance Requirements: Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able to obtain another polygraph prior to start, if required. Physical Requirements: Must be able to remain in a stationary position at least 50% of the time.

MANTECH seeks a motivated, career and customer-oriented Circuit Design and Documentation Technician to join our team in Chantilly, VA. In this role, you will play a critical role in the creation, implementation, and documentation of electronic systems and circuits within IT projects. This role combines technical knowledge of circuit design with strong documentation skills to ensure that designs are implemented effectively, maintained, and understood by future technicians or engineers. Responsibilities include, but are not limited to: Plan, design, implement, monitor, troubleshoot, and support local and wide area networks (LANs/WANs) in the areas of Internet connectivity, capacity planning, routing, switching, server load balancing, network security, and wireless. Collaborate with engineers, IT specialists, and project managers to ensure that circuit designs meet project specifications and functional requirements ensuring accurate documentation of cabling infrastructure and enterprise networks. Supporting installation teams by providing comprehensive run lists and cabling plans. Creating circuit documentation in support of customer funded projects. Building inventories and maintaining accurate information as it pertains to network components, circuits, routers, switches, racks, etc. Local travel may be required between customer buildings or temporary assignment to an alternate location in support of special projects. Member of a team comprised of a variety of skills that provide coverage from 6:00 a.m. - 6:00 p.m.; may need to work extended hours during critical peaks and be available to meet last minute requests. Minimum Qualifications: High School Diploma with 13+ years of experience, Associates Degree with 11+ years of experience, or a Bachelor's Degree with 9+ years of experience. Prior experience with cable testers and AutoCAD. Strong documentation skills, including creating detailed circuit diagrams, assembly instructions, and technical specifications. Experience with both simple and complex circuit designs, including experience with schematic capture tools. Ability to select components based on cost and space limitations. Knowledge of component and transmission medium compatibility and interconnection. Proficiency in the use of MS Office product suite (PowerPoint, Excel, Word, SharePoint.) Preferred Qualifications: Experience in circuit design, electronics, or IT infrastructure projects (networking or system integration) that require custom circuits or embedded systems. Certified Electronics Technician (CET) certification. Autodesk Certified Professional (AutoCAD) certification. Ability to adapt to quickly changing tasks and requirements and the ability to quickly learn new skills while on the job. Clearance Requirements: Must have a current/active TS/SCI with Polygraph. Physical Requirements: Must be able to remain in a stationary position at least 50% of the time. Constantly operate a computer, phone, and other office equipment for extended periods of time. Must be able to move/traverse within and between buildings and offices, position self to maintain equipment and cabling, including under the desks, while moving floor tiles, and in server closets, some of which may be confined spaces. Must be able to move Audio/Visual or Computer equipment weighing 50+ pounds, some equipment may require team-lift or the use of carts. Ascends/descends a ladder, 10+ feet high while pulling cables and adjusting equipment.

MANTECH seeks a motivated, career- and customer-oriented CNO Python Software Engineer to join our team in Hanover, MD. This position supports critical mission requirements by delivering advanced software solutions within a cyber network operations (CNO) environment. You will provide specialized testing and evaluation capabilities tailored to system functions, contributing to impactful national security initiatives. Responsibilities include, but are not limited to: Design and develop new bleeding edge software, leveraging your knowledge in programming and coding with Python to solve challenging problems and create the best solutions Work with the entire Software Development Lifecycle, including planning, requirements analysis, designing, developing, testing and deployment of new or improved CNO Capabilities Debugging and troubleshooting software Modify existing software to correct errors, to adapt to new requirements, or to improve performance Perform quality control on team products Demonstrate knowledge of multiple software development methodologies (e.g., Scrum, TDD, Waterfall). Minimum Qualifications: High School Diploma and 11+ years of programming experience, or BS Degree in a technical discipline and 7+ years of programming experience Experience with Python Experience with Python Task Automation Experience with Object Oriented Analysis and Design Experience programming using Software Version Control Experience programming using JSON and YAML Preferred Qualifications: Experience with software analysis and/or reverse engineering Experience with networking (TCP/IP) and socket level programming Experience programming using agile software development methodology Experience with SQL and NoSQL databases Experience with Subversion/GIT Experience with Atlassian Tools (Confluence, Jira, Crucible) Experience with software troubleshooting and debugging Experience Unit/System/Integration testing Knowledge of CNO environment Security Clearance Requirements: Active and current TS/SCI with Polygraph Physical Requirements: Must be able to remain in a stationary position 50% of the time

MANTECH seeks a motivated, career and customer-oriented Senior Cloud Support Engineer to join our team in Tysons, VA The Senior Cloud Support Engineer will leverage their strong technical background and knowledge to provide senior operational and technical support to the Frontline operations team. You will help customers seamlessly operate hybrid on-premises cloud infrastructure through a mix of debugging, networking, and system administration. Responsibilities include but are not limited to: Understanding all aspects of the platform, its features, and how customers create and operate supported workloads. Internalizing scalability and quality issues to develop and execute comprehensive addressment plans. Troubleshooting complex system and application issues, including containerized microservices and VM workloads. Collaborating with PMs, TPMs, and external vendors to streamline support and prioritize high-value items. Developing order portals, automation tooling, and SLA dashboards to enhance support scenarios and solutions. Assisting L2 and L3 troubleshooting efforts while contributing to the scaling of the support software stack. Recommending, and when approved, implementing process and policy improvements to product operations. Minimum Qualifications: Bachelor's degree in Computer Science, Technology, Engineering, or Mathematics (or 4 years of equivalent experience). Associate's degree (or 2 years of equivalent experience) and 2 years of additional experience may be exchanged in lieu of a required bachelor's degree. 5+ years experience with software development in one or more programming languages, including data structures and algorithms. 3+ years experience testing, maintaining, and launching software products in a production environment. 1+ years experience with software design and architecture focused on complex systems. Preferred Qualifications: Experience with Kubernetes, CI/CD tools, and building or running monitoring pipelines. Deep knowledge of Operating System internals, L2/L3/L4 networking, and Storage appliance internals. Understanding of enterprise Compute environments with virtualization and cloud hosting experience. Experience with ServiceNow and the physical deployment or troubleshooting of networking infrastructure. Clearance Requirements: An active TS/SCI with Polygraph is required for this position. Physical Requirements: 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 and office machinery. Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.