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Date Posted: 2026-06-30 Country: United States of America Location: US-MA-MARLBOROUGH-MA2 1001 Boston Post Rd BLDG 2 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type: Secret - Current Security Clearance Status: Active and existing security clearance required on day 1 Raytheon Company, Managed by Collins Aerospace Collins Aerospace, an RTX company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio, and expertise to solve customers' toughest challenges and to meet the demands of a rapidly evolving global market. The Strategic Communications team is seeking an experienced Principal Systems Engineers in a role committed to creating creative and cost-effective solutions for our ground and airborne systems. As part of Collins Aerospace, Mission Systems organization, we specialize in developing advanced communication systems, ground and flight computers, sensors, cyber and software solutions, as well as providing integration of Mission Systems. As part of the Strategic Communications Department, the Systems Engineering department supports a variety of communications systems including SATCOM (including AEHF, EHF, X-Band, Ka-Band, Ku-Band, C-Band, and PTW), Line-of-Site (LOS) Radio Terminals and Secure Switching Networks. What You Will Do • Oversee the development of full lifecycle solutions from CONOPS to Validation • Act as a Subject Matter Expert within discipline with advanced to expert knowledge of work area • Oversee and perform lab activities including definition, setup, configuration management, and testing • Ensure Modeling, Hardware, and Software Interfaces utilize a scalable ontology • Oversee and support the Integration of Solutions within their target environment • Coach, review, and delegate work of lower-level professional • Contribute to the development of goals of the discipline and planning efforts (Cost and Schedule) • Influence others regarding policies, practices, and procedures • Manage moderately sized projects or processes • Manage the entrance and exit criteria of Design Reviews, Integration, Dry Run, and Formal Qualification Testing • Review, moderate and document major changes in systems or processes to solve difficult and often complex problems • Analyze and document system behaviors • Support system trade studies, requirements analysis, allocation to subsystems Sign-on Bonus Eligible Qualifications You Must Have • Strong integration and test experience including test procedure development, test execution, test reporting, and test automation • Knowledge of or application of Earned Value Management System (EVMS) • Proficient in tooling to include Microsoft products, or tasking boards (Jira, IBM EWM, etc.) • Active and transferable U.S. government issued SECRET security clearance is required prior to start date • U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance • Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 8 years prior relevant experience or an Advanced Degree in a related field and minimum 5 years of experience Qualifications We Prefer • Experience in Communication Radio and Systems: SATCOM, LOS/BLOS, AEHF, PTW, or V/UHF • Experience in Environmental Qualification Testing (EQT) • Proficient in tooling to include CAMEO, Rhapsody • Experience in proposal support including writing Basis of Estimates (BOEs) • Experience in System Level Integration, Verification, and Validation (IV&V) for ground based, ship, submarine, or airborne platforms • Experience in Virtual Machine design and deployment • Excellent communication skills (written, verbal, and presentation) and ability to effectively communicate with IPT leaders, hardware and software development engineers, specialty engineers, program managers, and our customers What We Offer • Medical, dental, and vision insurance • Three weeks of vacation for newly hired employees • Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option • Tuition reimbursement program • Student Loan Repayment Program • Life insurance and disability coverage • Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection • Birth, adoption, parental leave benefits • Ovia Health, fertility, and family planning • Adoption Assistance • Autism Benefit • Employee Assistance Plan, including up to 10 free counseling sessions • Healthy You Incentives, wellness rewards program • Doctor on Demand, virtual doctor visits • Bright Horizons, child and elder care services • Teladoc Medical Experts, second opinion program • This position is eligible for relocation assistance • And more! Learn More & Apply Now! Do you want to be a part of something bigger? A team whose impact stretches across the world, and even beyond? At Collins Aerospace, our Mission Systems team helps civilian, military and government customers complete their most complex missions - whatever and wherever they may be. Our customers depend on us for intelligent and secure communications, missionized systems for specialized aircraft and spacecraft and collaborative space solutions. By joining our team, you'll have your own critical part to play in ensuring our customer succeeds today while anticipating their needs for tomorrow. Are you up for the challenge? Join our mission today. Please ensure the role type (defined below) is appropriate for your needs before applying to this role. ONSITE: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. At Collins, the paths we pave together lead to limitless possibility. And the bonds we form - with our customers and with each other propel us all higher, again and again. Apply now and be part of the team that's redefining aerospace, every day. Employee Referral Eligible As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote. The salary range for this role is 107,500 USD - 204,500 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate's work experience, location, education/training, and key skills.Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company's performance.This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window. RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans' Readjustment Assistance Act. Privacy Policy and Terms: Click on this link to read the Policy and Terms

Date Posted: 2026-06-30 Country: United States of America Location: US-MA-MARLBOROUGH-MA2 1001 Boston Post Rd BLDG 2 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type: DoD Clearance: Secret Security Clearance Status: Active and existing security clearance required after day 1 Raytheon Company, Managed by Collins Aerospace Collins Aerospace, an RTX company, is a leader in technologically advanced and intelligent solutions for the global aerospace and defense industry. Collins Aerospace has the capabilities, comprehensive portfolio, and expertise to solve customers' toughest challenges and to meet the demands of a rapidly evolving global market. The Strategic Communications team is seeking experienced Senior Systems Engineers in a role committed to creating creative and cost-effective solutions for our ground and airborne systems. As part of Collins Aerospace, Mission Systems organization, we specialize in developing advanced communication systems, ground and flight computers, sensors, cyber and software solutions, as well as providing integration of Mission Systems. As part of the Strategic Communications Department, the Systems Engineering department supports a variety of communications systems including SATCOM (including AEHF, EHF, X-Band, Ka-Band, Ku-Band, C-Band, and PTW), Line-of-Site (LOS) Radio Terminals and Secure Switching Networks. What You Will Do • Lead the development of full lifecycle solutions from CONOPS to Validation • Define and perform lab activities including definition, setup, configuration management, and testing • Integrate solutions within their target environment • Coach and review the work of lower level professionals • Influence others regarding policies, practices, and procedures • Manage small projects or processes • Manage the preparation and/or execution of Design Reviews as well as Integration, Dry Run, and Formal Qualification Testing • Review minor and document moderate changes in systems or processes to solve difficult and sometimes complex problems • Influence decision-makers with recommended courses of action • Analyze and document system behaviors • Support system trade studies, requirements analysis, allocation to subsystems • Define Modeling, Hardware, and Software Interfaces Sign-on Bonus Eligible Qualifications You Must Have • Strong integration and test experience including test procedure development, test execution, test reporting, and test automation • Proficient in tooling to include Microsoft products, or tasking boards (Jira, IBM EWM, etc.) • Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience Qualifications We Prefer • Experience in Communication Radio and Systems: SATCOM, LOS/BLOS, AEHF, PTW, or V/UHF • Experience in Environmental Qualification Testing (EQT) • Experience in System Level Integration, Verification, and Validation (IV&V) for ground based, ship, submarine, or airborne platforms • Experience in systems support to software application and hardware development • Experience in Virtual Machine design and deployment • Proficient in tooling to include CAMEO, Rhapsody • Outstanding communication skills (written, verbal, and presentation) and ability to effectively communicate with IPT leaders, hardware and software development engineers, specialty engineers, program managers, and our customers What We Offer • Medical, dental, and vision insurance • Three weeks of vacation for newly hired employees • Generous 401(k) plan that includes employer matching funds and separate employer retirement contribution, including a Lifetime Income Strategy option • Tuition reimbursement program • Student Loan Repayment Program • Life insurance and disability coverage • Optional coverages you can buy pet insurance, home and auto insurance, additional life and accident insurance, critical illness insurance, group legal, ID theft protection • Birth, adoption, parental leave benefits • Ovia Health, fertility, and family planning • Adoption Assistance • Autism Benefit • Employee Assistance Plan, including up to 10 free counseling sessions • Healthy You Incentives, wellness rewards program • Doctor on Demand, virtual doctor visits • Bright Horizons, child and elder care services • Teladoc Medical Experts, second opinion program • This position is eligible for relocation assistance • And more! Learn More & Apply Now! Do you want to be a part of something bigger? A team whose impact stretches across the world, and even beyond? At Collins Aerospace, our Mission Systems team helps civilian, military and government customers complete their most complex missions - whatever and wherever they may be. Our customers depend on us for intelligent and secure communications, missionized systems for specialized aircraft and spacecraft and collaborative space solutions. By joining our team, you'll have your own critical part to play in ensuring our customer succeeds today while anticipating their needs for tomorrow. Are you up for the challenge? Join our mission today. Please ensure the role type (defined below) is appropriate for your needs before applying to this role. ONSITE: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products. At Collins, the paths we pave together lead to limitless possibility. And the bonds we form - with our customers and with each other propel us all higher, again and again. Apply now and be part of the team that's redefining aerospace, every day. Employee Referral Eligible As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote. The salary range for this role is 86,800 USD - 165,200 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate's work experience, location, education/training, and key skills.Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company's performance.This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window. RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans' Readjustment Assistance Act. Privacy Policy and Terms: Click on this link to read the Policy and Terms

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris is the Trusted Disruptor in defense tech. With customers' mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. Job Title: Senior Specialist, Systems Engineer - ELINT Job Code: 39540 Job Location: Greenville, TX Job Schedule: 9/80 - Employees work 9 out of every 14 days - totaling 80 hours worked - and have every other Friday off Job Description: L3Harris is seeking a Systems Engineering Specialist who will be involved in activities directly related to the design, and development of complex, specialized SIGINT hardware/software systems to process and manipulate ISR data from multiple data sources. Essential Functions: Works closely with the customer to comprehensively design and implement new system functionality. Writes requirements, supports development, performs integration testing of new or modified products in a Systems Integration Laboratory and on airborne and ground-based platforms. Verifies and validates new baseline functionality while ensuring legacy functionality continues to work as intended. Interface with other Systems Engineers, Agile Development Engineering, Flight Line Test, Product Development, and Project Engineering to understand new baseline functionality. Work closely with L3Harris Internal Research and Development (IR&D) developing proprietary ELINT technology and capabilities. Follow existing standards to document system testing status and anomalies with system hardware and software and verifies subsequent anomaly fixes. Interfaces with the customer to ensure their satisfaction with system performance. Work with management to develop and adhere to schedules and budgets required to accomplish assigned work. Provide regular status updates for ongoing work efforts to management and the customer. Work effectively in a fast-paced, dynamic environment with time-critical requirements. Effective cross-functional communication skills supporting program execution from development through integration and delivery. Analysis of customer requirements, including system and sub-system trade studies, and detailed hardware and software specifications for systems, subsystems, and key components. Development of test planning/procedures of various test equipment including anechoic chambers, spectrum analyzers, and network analyzers. Entire Program/Engineering Life Cycle Phases and Activities. IRAD and Technical Baseline development. Requirements Management. Strong problem solving abilities with thorough documentation, verification, and validation practices Proficiency in digital signal processing (DSP) with strong MATLAB skills for algorithm development, modeling, simulation, and data analysis Solid understanding of DSP fundamentals including filtering, spectral analysis, FFTs, modulation, sampling theory, and noise reduction Ability to support algorithm implementation in C, C++, or Python Active Secret or recent TS/SCI Clearance with the ability to maintain. Working contract proposals. Travel up to 10%. Other duties as assigned by Supervisor. Qualifications: Bachelor's Degree and minimum 6 years of prior relevant engineering experience. Graduate Degree and a minimum of 4 years of prior related engineering experience. In lieu of a degree, a minimum of 10 years of prior related engineering experience. Demonstrated understanding of RF and microwave fundamentals, including antennas, receivers, spectral behavior, and front-end design. Demonstrated experience with signals analysis techniques and tools, including pulse analysis, modulation assessment, and emitter characterization. Demonstrated knowledge of radar fundamentals such as pulse radar, CW/FMCW, LPI principles, scan patterns, and threat system behavior. Preferred Additional Skills: Active TS/SCI Clearance Experience with integration and troubleshooting of complex RF or electronic warfare receiver systems. Experience with JIRA, Confluence, and DOORS for requirements and workflow management. Experience in MATLAB and Python for algorithm development, modeling, automation, data analysis, and visualization. Experience working with large IQ/sample data sets and developing automated processing workflows. Experience with advanced DSP algorithm development and implementation. Familiarity with system level SEI, LPI/LPE techniques, or advanced emitter analysis methodologies. Experience in software integration and system-level test. Proficiency with standard office and documentation tools. L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug-free workplace and performs pre-employment substance abuse testing and background checks, where permitted by law. Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information. By submitting your resume for this position, you understand and agree that L3Harris Technologies may share your resume, as well as any other related personal information or documentation you provide, with its subsidiaries and affiliated companies for the purpose of considering you for other available positions. L3Harris Technologies is an E-Verify Employer. Please click here for the E-Verify Poster in English or Spanish. For information regarding your Right To Work, please click here for English or Spanish.