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20 sr systems engineer jobs found

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Security Clearance United States sr systems engineer
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LMI
Sep 15, 2026
Full time
Sr. Systems Engineer Lead w/active Top Secret clearance
LMI Washington, DC
Overview LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.   Leveraging our mission-ready technology and solutions, proven  expertise  in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration,  LMI serves the defense, space, homeland, healthcare, and intelligence sectors—helping agencies navigate complexity and outpace change.  Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.   Responsibilities LMI is seeking a skilled Sr. Systems Engineer Lead to manage systems engineering and endpoint device...
General Dynamics Mission Systems, Inc
Apr 06, 2026
Sr. Systems Engineer - Program Protection
General Dynamics Mission Systems, Inc Pittsfield, MA
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 5+ years of job-related experience, or a Master's degree plus 3 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is obtainable within a reasonable amount of time after hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Make the world’s most advanced Strategic Weapons System even smarter.!   Imagine a world-class engineering environment. Now add a team of exceptional talent along with technologies that are so advanced they're often classified....
Lockheed Martin
Jun 06, 2026
Cyber Systems Security Engineer Sr (Owego, NY)
Lockheed Martin Owego, NY
Description: WHAT WE’RE DOING At Lockheed Martin - Rotary Mission Systems, we are leading the development of state-of-the-art technologies that are integral to national security and defense. As part of our ongoing commitment to advancing mission-critical solutions, we are focused on integrating cutting-edge cybersecurity measures to ensure the resilience and security of our systems. By embedding advanced cybersecurity features, we are enhancing the operational effectiveness and safety of our technologies in an increasingly complex digital landscape. THE WORK As a Cyber Systems Security Engineer Sr, you will support the integration of modern cybersecurity solutions across multiple Owego programs. You will play a critical role in ensuring our systems are not only effective but also resilient in the face of evolving threats. Key responsibilities include: Cybersecurity Design & Implementation: Support the decomposition of Statements of Work (SOW) into actionable,...
Lockheed Martin
Jun 06, 2026
Cyber Systems Security Engineer Sr (Stratford, CT)
Lockheed Martin Stratford, CT
Description: WHAT WE’RE DOING At Lockheed Martin - Rotary Mission Systems, we are leading the development of state-of-the-art technologies that are integral to national security and defense. As part of our ongoing commitment to advancing mission-critical solutions, we are focused on integrating cutting-edge cybersecurity measures to ensure the resilience and security of our systems. By embedding advanced cybersecurity features, we are enhancing the operational effectiveness and safety of our technologies in an increasingly complex digital landscape. THE WORK As a Cyber Systems Security Engineer Sr, you will support the integration of modern cybersecurity solutions across multiple Owego programs. You will play a critical role in ensuring our systems are not only effective but also resilient in the face of evolving threats. Key responsibilities include: Cybersecurity Design & Implementation: Support the decomposition of Statements of Work (SOW) into actionable,...
General Dynamics Mission Systems, Inc
Jun 04, 2026
Sr Advanced Infrastructure Hardware Systems Engineer
General Dynamics Mission Systems, Inc Pittsfield, MA
Basic Qualifications Bachelor's degree in Systems Engineering, or a related Science, Engineering or Mathematics field, plus a minimum of 8 years of relevant experience; or Master's degree, plus a minimum of 6 years of relevant experience.   CLEARANCE REQUIREMENTS: Department of Defense Secret security clearance is obtainable within a reasonable amount of time after hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required Responsibilities for this Position ROLE AND POSITION OBJECTIVES: As an Infrastructre Hardware Systems enginee r for Surface Systems, you ’ll be a member of an agile team responsible for delivering a robust, flexible, secure, and stable infrastructure for U.S. Navy surface ships. You will develop and configure...
General Dynamics Mission Systems, Inc
Mar 26, 2026
Senior Systems Engineer
General Dynamics Mission Systems, Inc Pittsfield, MA
Basic Qualifications Bachelor’s degree in Systems Engineering, or a related Science, Engineering or Mathematics field, plus a minimum of 5 years of relevant experience; or Master's degree, plus a minimum of 3 years of relevant experience.   CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position ROLE AND POSITION OBJECTIVES: As a Sr Systems Engineer for Fleet Ballistic Missile Auxiliary and Training Systems , you’ll be a member of a cross functional team responsible for development, production, installation and sustainment support of the Ohio-class and Columbia-class’ Trident II Fire Control...
Lockheed Martin
Jul 28, 2026
Model Based Systems Engineer Sr. Staff (Secret Clearance)
Lockheed Martin Colorado Springs, CO
Description: WHAT WE'RE DOING Our team at Lockheed Martin, is dedicated to engineering, developing, and integrating new capabilities for the Missile Defense System that protects the United States and its allies. While we are part of a large organization, we operate within smaller, agile teams in a fast-paced, dynamic environment. Our responsibilities include Sensor/Weapon Integration, Algorithm Development, User Interface Development, Automated Testing, Cyber Security, and enhancing critical missile defense technologies. THE WORK This position will perform some or all of the following duties, concentrating on early-phase (concept, requirements, and design) activities of the Systems-Engineering Development Lifecycle: 1.Lead the development of new system concepts by transforming stakeholder needs, acquired through documentation and solicitation, into easily reviewable technical approaches. 2.Perform requirements elicitation and decomposition using behavioral artifacts such as...
Lockheed Martin
Jul 21, 2026
Systems Engineer - Requirements and Verification Sr.
Lockheed Martin Littleton, CO
Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. For over 70 years, the Fleet Ballistic Missile (FBM) team has supported the Navy’s...
Lockheed Martin
Jun 24, 2026
Systems Engineer, Sr - Weapon Products
Lockheed Martin Mount Laurel Township, NJ
Description: What We're Doing As a part of the Lockheed Martin community, we take on challenges and find solutions using creativity and collaboration. If you’re looking to be a part of a passionate team solving these complex problems, then Rotary and Mission Systems is the place for you. The Work Lockheed Martin Rotary and Mission Systems is seeking a Full-Time Senior System Engineer. In this role, you will work on Combat System development and test execution as individual contributor in the Weapon Products. The successful candidate will have knowledge or experience in System Engineering of Weapons Control Systems product supporting Ballistic Missile Defense (BMD) and Anti-Air Warfare (AAW) programs to meet cost and schedule. Must be a US Citizen. This position will require a government security clearance. This position is located at a facility that requires special access. Who We Are Lockheed Martin is a global aerospace, defense, and security company dedicated to...
Lockheed Martin
Jun 24, 2026
Cyber Systems Security Engineer Sr
Lockheed Martin King of Prussia, PA
Description: Cyber Systems Security Engineer (CSSE) – TTWCS Program What We're Doing At Lockheed Martin Rotary and Mission Systems, we are shaping the future of defense and security through innovation, integrity, and visionary thinking. Our teams apply the highest standards of business ethics and technical expertise to design solutions that safeguard our nation and allies. Every day, we push boundaries to ensure mission success—and we invite you to be part of this critical work. The Work As a Cyber Systems Security Engineer (CSSE) supporting the TTWCS program, you will: Perform periodic manual and automated STIG evaluations, tracking deltas across versions and platforms. Conduct cyber risk assessment activities, including threat modeling, vulnerability analysis, and evaluation of mitigation strategies. Develop, analyze, and validate security AI design constraints within the cyber domain. Collaborate with cybersecurity engineers, system architects, and developers to...
Lockheed Martin
Jun 19, 2026
Sr. Radar Systems Engineer
Lockheed Martin Moorestown, NJ
Description: What We’re Doing Here at Lockheed Martin Rotary and Mission Systems we take on the most demanding challenges in the world. We seek out innovative ideas and creative solutions to seemingly impossible problems facing our customers in the Sensors, Effectors & Mission Systems (SEMS) organization. We collaborate with the best Radar engineers in the business across the Moorestown, NJ and Syracuse, NY sites to invent solutions where they don’t exist yet. If you’re looking for the challenge of a lifetime on a team of the brightest minds in the world, then Rotary Mission Systems and the Sensor Architectures team is the place for you. If you’re looking for life-long learning and a career where the hard work is the fun part, then you’re in the right place. Lockheed Martin. Your Mission is Ours. The Work Our Radar Systems Engineering team is seeking a candidate to support architecture, design, Concept of Operations, requirements development, analysis, and...
LMI
Aug 05, 2026
Sr. Network Engineer w/active Top Secret clearance
LMI Washington, DC
Overview LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.   Leveraging our mission-ready technology and solutions, proven  expertise  in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the  defense, space, homeland, healthcare, and intel  sectors— helping agencies navigate complexity and  outpace  change.  Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and drive lasting value.   Responsibilities LMI is seeking a skilled Network Engineer to design, build, and  maintain   classified network...
General Dynamics Mission Systems, Inc
Jun 12, 2026
Senior Software Engineer
General Dynamics Mission Systems, Inc Bloomington, MN
Basic Qualifications Bachelor's degree in Software Engineering, or related Science, Technology, Engineering or Mathematics field, plus a minimum of 8 years of relevant experience; or Master's degree, plus 6 years relevant experience.   CLEARANCE REQUIREMENTS: Ability to obtain a Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position ROLE AND POSITION OBJECTIVES: As a Sr Advanced Software Engineer for Airborne Systems, you’ll be a member of a cross functional team responsible for airborne computers that process and display mission data in the cockpit, to crypto products for identifying friendly aircraft, and weapon control...
Lockheed Martin
Jun 06, 2026
Cyber Systems Security Engineer (Owego, NY)
Lockheed Martin Owego, NY
Description: WHAT WE’RE DOING At Lockheed Martin - Rotary Mission Systems, we are leading the development of state-of-the-art technologies that are integral to national security and defense. As part of our ongoing commitment to advancing mission-critical solutions, we are focused on integrating cutting-edge cybersecurity measures to ensure the resilience and security of our systems. By embedding advanced cybersecurity features, we are enhancing the operational effectiveness and safety of our technologies in an increasingly complex digital landscape. THE WORK As a Cyber Systems Security Engineer Sr, you will support the integration of modern cybersecurity solutions across multiple Owego programs. You will play a critical role in ensuring our systems are not only effective but also resilient in the face of evolving threats. Key responsibilities include: Cybersecurity Design & Implementation: Support the decomposition of Statements of Work (SOW) into actionable,...
Lockheed Martin
Jun 06, 2026
Cyber Systems Security Engineer (Stratford, CT)
Lockheed Martin Stratford, CT
Description: WHAT WE’RE DOING At Lockheed Martin - Rotary Mission Systems, we are leading the development of state-of-the-art technologies that are integral to national security and defense. As part of our ongoing commitment to advancing mission-critical solutions, we are focused on integrating cutting-edge cybersecurity measures to ensure the resilience and security of our systems. By embedding advanced cybersecurity features, we are enhancing the operational effectiveness and safety of our technologies in an increasingly complex digital landscape. THE WORK As a Cyber Systems Security Engineer Sr, you will support the integration of modern cybersecurity solutions across multiple Owego programs. You will play a critical role in ensuring our systems are not only effective but also resilient in the face of evolving threats. Key responsibilities include: Cybersecurity Design & Implementation: Support the decomposition of Statements of Work (SOW) into actionable,...
General Dynamics Mission Systems, Inc
May 18, 2026
Systems Engineer - Trident II
General Dynamics Mission Systems, Inc Pittsfield, MA
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 2+ years of job-related experience, or a Master's degree and 6 months of job-related experience. Agile experience preferred.   CLEARANCE REQUIREMENTS: Department of Defense Secret security clearance is required within a reasonable period of time. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required . Candidate must work onsite. Some telecommuting allowed. Responsibilities for this Position As a Systems Engineer (Sr Sys Engr) for the Trident II D5LE2 program, you’ll be a member of a cross functional team responsible for developing, modeling, and coordinating requirements for...
General Dynamics Mission Systems, Inc
May 18, 2026
Systems Engineer - Integrated Systems Design
General Dynamics Mission Systems, Inc Pittsfield, MA
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 2+ years of job-related experience, or a Master's degree and 6 months of job-related experience. Agile experience preferred.   CLEARANCE REQUIREMENTS: Department of Defense Secret security clearance is obtainable within a reasonable amount of time after hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Candidate must be able to work onsite. Some telecommuting allowed. Responsibilities for this Position As a Systems Engineer (Sr Sys Engr) for Fleet Ballistic Missile Auxiliary and Training Systems, you’ll be a member of a cross functional team responsible for...
LMI
May 16, 2026
Sr. Platform Engineer
LMI Washington, DC
Overview LMI, a trusted government contractor with decades of experience delivering cutting-edge solutions, is seeking a driven and innovative Platform Engineer to help build and extend IronGate, an ETL solution focused on moving data from commercial environments into secure environments. You’ll be an initial member of a small, cross-functional team maintaining this product on contract. This position requires the ability to obtain a clearance;  U.S. citizenship is required. This role requires quarterly travel for in person team planning and collaboration events.   This isn’t a maintain-the-backlog role. You’ll work across the stack, own features end-to-end, and help shape how this solution is built for long term success for our clients.   About This Team IronGate sits within LMI’s Chief Technology Office. We’re a small, high-visibility team building an ETL for federal agencies. The culture is more startup than traditional government contractor;...
General Dynamics Mission Systems, Inc
Mar 24, 2026
Sr Advanced Software Engineer - Top Secret Clearance Required
General Dynamics Mission Systems, Inc Dedham, MA
Basic Qualifications Requires a Bachelor’s degree in Software Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position ROLE AND POSITION OBJECTIVES: As a software engineer for the NC3 business segment, you’ll be a member of a cross functional team responsible for design, development and test of the next generation of Strategic Systems.   We encourage you to apply if you have...
General Dynamics Mission Systems, Inc
May 26, 2026
Master Scheduler - Fire Control DDT
General Dynamics Mission Systems, Inc Pittsfield, MA
Basic Qualifications Bachelor's degree or equivalent combination of relevant work experience is required, plus a minimum of 8 years of relevant experience; or Master's degree plus a minimum of 6 years of relevant experience.   CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is obtainable within a reasonable amount of time after hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Ready to be a leader with the company that is committed to pushing the limits of truly advanced technologies? At General Dynamics Mission Systems, we create the products and services that help our service members, intelligence analysts and first responders keep our nation safe. The work we do is...
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