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25 systems engineer sr jobs found

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Security Clearance systems engineer sr
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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
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...
LMI
Jul 29, 2026
Sr. Systems Engineer/End Point 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 / Endpoint Lead to manage systems engineering and endpoint...
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
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....
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...
Lockheed Martin
Jul 24, 2026
Systems Integration and Test Engineer, Sr
Lockheed Martin Moorestown, 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 Here at Lockheed Martin's Rotary and Mission Systems (RMS) business in Moorestown, NJ we are responsible for integrating, testing, and demonstrating some of our customers most complex systems. As the Engineer in our System Integration and Test (SI&T) department, you will be a part of the team responsible for high level system design, system test planning and test execution for our key customers, including US Navy, US Coast Guard, US Missile Defense Agency, US Air Force, and international customers. In this position, the successful candidate will experience responsibilities in one or more of the following domains: • System-level integration of software and hardware components...
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
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...
Lockheed Martin
May 15, 2026
Systems Integration Engineer Sr - TS Clearance
Lockheed Martin Colorado Springs, CO
Description: What We’re Doing Our team, Command and Control, Battle Management and Communications (C2BMC)- Global 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 - Integrating JEMINI Lab test suites in our development and test environments - Assisting software development personnel with the investigation and resolution of issues; develop configurations to support test and prototypes of developing systems - Creating and modifying scripts to perform data analysis of input, internal, and output message data - Troubleshooting both...
SAIC
Aug 05, 2026
Senior Cyber Engineer
SAIC OK
Description SAIC is seeking a qualified Sr. Cyber Engineer to support our customer in Midwest City, Oklahoma. This work is focused on the network architecture analysis and identification of USAF operational aircraft and Weapons Systems Cybersecurity vulnerabilities and solutions to ensure that developing and fielded capabilities effectively deter efforts to infiltrate or exploit friendly systems by an unauthorized nation or organization. Responsibilities: Support USAF System Program offices, Cybersecurity Program Leads, Program Managers, IPTs and Systems Engineers in identifying Critical Program Information, network architecture and message protocol vulnerabilities. Support developing and implementing network security designs for supported programs. Complete Authority to Operate (ATO) Documentation Updates. Coordinate and support completion of Interim Authority to Test Packages. Complete and support completion of Cybersecurity Impact Identification...
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...
SAIC
Jul 08, 2026
Desktop SCCM Engineer
SAIC VA
Description SAIC is seeking a Sr. Desktop Engineer (SCCM) for a new/exciting program out of Quantico, VA. (Must possess an active TS/SCI and Sec+ Certification.) Pending assigned duties/responsibilities, it is possible to work remote one (1) day a week. Introduction Make a difference for national security by joining a team of dedicated IT professionals who will sustain, modernize and transform the enterprise IT capabilities of the Defense Counterintelligence and Security Agency (DCSA). The Air Force and Combatant Commands Business Group of SAIC is seeking a Senior Desktop Engineer (SCCM) to support a transformational infrastructure program for DCSA. SAIC is proud to be supporting DCSA in safeguarding our nation's information. DCSA is the designated oversight authority on the accreditation of classified facilities, information systems, and the insider threat program. This involves security oversight of more than 10,000 companies and approximately 13,000 facilities...
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...
SAIC
Jun 08, 2026
Senior Apple Platform Engineer
SAIC VA
Description SAIC is seeking a Sr. Apple Platform Engineer to support our DCSA/OneIT program out of Quantico, VA. Introduction Make a difference for national security by joining a team of dedicated IT professionals who will sustain, modernize and transform the enterprise IT capabilities of the Defense Counterintelligence and Security Agency (DCSA). The Air Force Space and Intel Business Group of SAIC is seeking a Senior Apple Platform Engineer to support a transformational infrastructure program for DCSA. SAIC is proud to be supporting DCSA in safeguarding our nation's information. DCSA is the designated oversight authority on the accreditation of classified facilities, information systems, and the insider threat program. This involves security oversight of more than 10,000 companies and approximately 13,000 facilities involved in classified work throughout the DoD and 31 Federal agencies. Specifically, on the DCSA One IT program, SAIC will provide an enterprise...
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,...
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