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30 senior security engineer jobs found

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United States senior security engineer Virginia
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General Dynamics Mission Systems, Inc
Mar 26, 2026
Senior Software Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Software 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.   CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is obtainable within 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 a senior software engineer, you’ll be a member of a cross functional team responsible for developing software for the US Navy submarine and surface fleet. This team is responsible for software development and resolution of...
Lockheed Martin
Mar 24, 2026
Project Engineering Manager/Logistics Project Manager
Lockheed Martin Manassas, VA, USA
Description: WHO WE ARE Lockheed Martin is a global leader in aerospace, defense, and technology solutions, dedicated to pushing the boundaries of innovation and shaping the future of the industry. With a rich legacy of excellence and a commitment to delivering advanced capabilities to our customers, we are proud to be at the forefront of cutting-edge technology and engineering. WHAT WE'RE DOING At Lockheed Martin, we're revolutionizing the aerospace and defense sector through groundbreaking technology, advanced manufacturing processes, and a world-class team of professionals. Our mission-driven approach and unwavering dedication to excellence ensure that we continue to deliver superior products and solutions to our customers around the world. THE WORK The Rotary and Mission Systems Global Sustainment (GS) Project Engineer Manager will be the GS Logistics Project Manager (LPM) responsible for the on-time delivery of all logistics products for Underwater Systems and related...
Lockheed Martin
Mar 20, 2026
Global Sustainment Logistics Project Manager
Lockheed Martin Manassas, VA, USA
Description: WHO WE ARE Lockheed Martin is a global leader in aerospace, defense, and technology solutions, dedicated to pushing the boundaries of innovation and shaping the future of the industry. With a rich legacy of excellence and a commitment to delivering advanced capabilities to our customers, we are proud to be at the forefront of cutting-edge technology and engineering. WHAT WE'RE DOING At Lockheed Martin, we're revolutionizing the aerospace and defense sector through groundbreaking technology, advanced manufacturing processes, and a world-class team of professionals. Our mission-driven approach and unwavering dedication to excellence ensure that we continue to deliver superior products and solutions to our customers around the world. THE WORK The Rotary and Mission Systems (RMS) Global Sustainment (GS) Project Engineer Senior Staff will be the GS Logistics Project Manager (LPM) responsible for delivery of all assigned program’s logistics products. The candidate...
General Dynamics Mission Systems, Inc
Mar 18, 2026
Advanced Software Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Software 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 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 Key Responsibilities: Provide senior technical expertise and guidance for SLCM-N software architecture and development Contribute to architectural standards, technical roadmaps, and design decisions for networking protocols, socket programming, and distributed...
General Dynamics Mission Systems, Inc
Mar 18, 2026
Advanced Systems Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
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 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 Key Responsibilities: Provide senior technical expertise and guidance for systems engineering activities across payload systems programs Lead requirements management, architecture development, and technical solutions that balance customer needs with program...
General Dynamics Mission Systems, Inc
Mar 17, 2026
Integrated Product Team (IPT) Lead
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering 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.  Must have Integrated Product Team (IPT) and product development experience with hardware.   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. Responsibilities for this Position Seeking a  Mid-to-Senior Level Engineer with 5+ years of technical experience  to become an Integrated Product Team (IPT) Lead dedicated to the development of...
General Dynamics Mission Systems, Inc
Mar 16, 2026
Senior Advanced Software Engineer - Applied Mathematics
General Dynamics Mission Systems, Inc Manassas, VA, USA
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: We are seeking a highly skilled and experienced Software Engineer with a Mathematics background to join our dynamic team focused on undersea sensor systems. In this role, you will be responsible for designing, developing, and...
General Dynamics Mission Systems, Inc
Mar 12, 2026
Senior Test Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Engineering, or a related Science, Technology or Mathematics field. Also requires 2+ years of job-related experience, or a Master's degree and 6 months of job-related 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 Job Summary: The PCS Test Engineer will be responsible for developing, executing, and documenting comprehensive teststrategies for the Payload Control System (PCS), a critical component of our advanced defense solutions. The PCSsupports various payloads, ensuring operational effectiveness and integration within broader...
LMI
Mar 10, 2026
Business Process Analyst (D/DBO Director) - TS/SCI required
LMI Arlington, VA, USA
Overview LMI seeks a Business Process Analyst to provide high-level business process analysis and executive support to a government customer in Arlington, Virginia.    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, healthcare, and energy 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...
General Dynamics Mission Systems, Inc
Mar 05, 2026
Seeking former FT Senior Engineering Support Specialist
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Bachelor’s or Technology degree in Engineering or a related specialized area/field, or equivalent combination of education and relevant work experience, plus 2 years of relevant experience, or a Master's degree. 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 Job Requisition: Tester for the Payload Control System (PCS) Job Summary: The PCS Test and Integration Engineer will be responsible for testing and validating the Payload Control System (PCS), a critical component of our advanced defense solutions. The PCS supports various payloads, ensuring operational effectiveness...
General Dynamics Mission Systems, Inc
Feb 26, 2026
Surface CSTK Senior Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Engineering, or a related Science, Technology or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related 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 Make the world’s most advanced Undersea Systems even smarter ROLE AND POSITION OBJECTIVES: As a Deputy Program Manager - Engineering (DPME) for the Hammerhead Program in the Undersea Systems Business you’ll lead a highly skilled cross functional team responsible for the development,...
General Dynamics Mission Systems, Inc
Feb 12, 2026
Deputy Program Manager Engineering
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Engineering, or a related Science, Technology or Mathematics field. Also requires 5+ years of job-related experience, or a Master's degree plus 3 years of job-related experience. Must have MS Project experience.  Also previous hardware background.    CLEARANCE REQUIREMENTS: : Department of Defense Secret security clearance is preferred 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 Seeking a  Mid-to-Senior Level Engineer with 5 to 15 years of technical experience  to become an assistant Deputy Program Manager Engineering (DPME) dedicated to the development of military-grade electronics in the Combat Hardware Business area...
General Dynamics Mission Systems, Inc
Feb 12, 2026
Advanced Software Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Software 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 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 Key Responsibilities: Provide senior technical expertise and guidance for SLCM-N software architecture and development Contribute to architectural standards, technical roadmaps, and design decisions for networking protocols, socket programming, and distributed systems...
General Dynamics Mission Systems, Inc
Feb 12, 2026
Sr Advanced Systems Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Systems 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 Key Responsibilities: Provide senior technical expertise and guidance for systems engineering activities across payload systems programs Lead requirements management, architecture development, and technical solutions that balance customer needs with program...
General Dynamics Mission Systems, Inc
Feb 12, 2026
Advanced Software Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Software 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 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 Key Responsibilities: Provide senior technical expertise and guidance for SLCM-N software architecture and development Contribute to architectural standards, technical roadmaps, and design decisions for networking protocols, socket programming, and distributed systems...
General Dynamics Mission Systems, Inc
Mar 26, 2026
Quality Specialist
General Dynamics Mission Systems, Inc Marion, VA, USA
Basic Qualifications Bachelor’s degree in a related specialized area or the equivalent is required plus a minimum of 2 years of relevant experience; or Master's degree. J-STD_001, 002, IPC 610, MIL-STD-883 certification may be required within 30 days of hire. CLEARANCE REQUIREMENTS: Department of Defense Secret security clearance is preferred 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 Imagine building your career by developing the solutions that support the mission of our nation’s service members, intelligence analysts and first responders. That’s the challenge that’s waiting for you at General Dynamics Mission Systems. Here you have the opportunity to redefine innovation...
Lockheed Martin
Mar 24, 2026
Wargame Planner / Analyst, Sr Stf - Suffolk, VA
Lockheed Martin Suffolk, VA, USA
Description: Lockheed Martin’s Center for Innovation (CFI), also known as The Lighthouse, represents the intersection of LM’s commitment to national defense and passion for innovation. It serves as the center for defense tech, multidomain integration, experimentation, wargaming, tabletop exercises, modeling and simulation, and decision analysis in both real and synthetic environments. It brings engineers and operators together to create innovation, and partners with government and industry teams to tackle complex problems and develop new concepts and capabilities. The CFI is seeking an experienced Wargame Planner-Analyst. This role sits within a team of experienced operations project managers, wargame designers, and wargame analysts and reports directly to the CFI’s Senior Manager for Operations & Wargaming. What You Will Be Doing: In this role, you will support and drive the quality of analysis-supported interactions between Lockheed Martin business areas (BAs) and...
LMI
Mar 24, 2026
Logistics Analyst
LMI Tysons, VA, USA
Overview We’re  building the next generation of RFID, GPS tagging, and sensor-mesh solutions that power mission-critical operations across the DoD. Behind every deployment is  a logistics  chain that ensures the right equipment arrives at the right place, every time. As our Logistics Analyst,  you’ll  be the one making sure our tech is packaged, shipped, and delivered flawlessly—so missions never skip a beat.     This position requires a Secret clearance.     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...
LMI
Mar 20, 2026
Mission Engineering Manager - Clearance Required
LMI Tysons, VA, USA
Overview We’re building the next generation of RFID, GPS tagging, and sensor-mesh solutions that power mission-critical operations across the DoD. Our products move data, but more importantly, they move missions. As our Mission Engineering Manager, you’ll define the architecture, guide the accreditation path, and lead the engineers that make it real. You’ll be the technical backbone of our delivery—ensuring every system is secure, compliant, and ready to perform where it matters most.     This position requires a Secret clearance.     Hybrid (U.S.-Based) | Some Travel Required | Primary work location in Washington,DC; Norfolk, VA; or Mechanicsburg, PA     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....
Lockheed Martin
Mar 17, 2026
Mult Function Engineering Sr Mgr
Lockheed Martin Herndon, VA, USA
Description: WHO WE ARE Lockheed Martin is a global leader in aerospace, defense, and technology solutions, dedicated to pushing the boundaries of innovation and shaping the future of the industry. With a rich legacy of excellence and a commitment to delivering advanced capabilities to our customers, we are proud to be at the forefront of cutting-edge technology and engineering. LM SPACE: WHAT WE'RE DOING 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. THE WORK Lockheed Martin is seeking a talented Software Engineering Sr Leader with a TS/SCI clearance to work from either our Littleton, CO, King of Prussia, PA or Herndon, VA location(s). We are seeking a talented Mult Func Engrg & Science Sr Mgr to lead our Ollivander team in building...
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