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112 systems security engineer jobs found

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Lockheed Martin
May 23, 2026
Cyber Systems Security Engineer
Lockheed Martin Manassas, VA
Description: WHAT WE’RE DOING At Lockheed Martin - Rotary and Mission Systems, we're shaping the future of Undersea Warfare (USW) systems. Our mission is to develop innovative technologies that secure our nation’s defense. We are integrating state-of-the-art cybersecurity solutions into mission-critical systems to ensure resilience, integrity, and continued superiority under the sea and across domains. THE WORK As a Cyber Systems Security Engineer, you will take a leadership role in enhancing cybersecurity across SWFTS (Submarine Warfare Federated Tactical Systems). You’ll drive the development and integration of modern cyber solutions that protect and empower critical Department of Defense (DoD) assets. Key responsibilities include: Designing, implementing, and maintaining security controls to protect system confidentiality, integrity, and availability Leverage guidance from Risk Management Framework (RMF), Security Requirements Guides (SRG), and Security Technical...
Lockheed Martin
May 23, 2026
Cyber Systems Security Engineer
Lockheed Martin Manassas, VA
Description: WHAT WE’RE DOING At Lockheed Martin - Rotary and Mission Systems, we're shaping the future of Undersea Warfare (USW) systems. Our mission is to develop innovative technologies that secure our nation’s defense. We are integrating state-of-the-art cybersecurity solutions into mission-critical systems to ensure resilience, integrity, and continued superiority under the sea and across domains. THE WORK As a Cyber Systems Security Engineer, you will take a leadership role in enhancing cybersecurity across SWFTS (Submarine Warfare Federated Tactical Systems). You’ll drive the development and integration of modern cyber solutions that protect and empower critical Department of Defense (DoD) assets. Key responsibilities include: Designing, implementing, and maintaining security controls to protect system confidentiality, integrity, and availability Leverage guidance from Risk Management Framework (RMF), Security Requirements Guides (SRG), and Security Technical...
Lockheed Martin
Mar 16, 2026
Cyber System Security Engineer
Lockheed Martin Herndon, VA
Description: The coolest jobs on this planet... or any other... are with Lockheed Martin Space. At the dawn of a new space age, Lockheed Martin Space is a pioneer, partner, innovator, and builder. Our amazing people are on a mission to make a difference in the world. Every single day, we use our unique skills and experiences to craft, design, and build solutions to some of the world's hardest engineering problems. Our culture inspires our employees to dream big; perform with excellence; and build incredible products. We provide the resources, the support, and the focus. You bring the passion and courage to envision limitless possibilities. Together, we'll build a better tomorrow. Are you ready to further your career in Cyber Security by working for one of the top companies in the world? The Kayenne program is seeking a Cyber Security Engineer technical lead for the Program’s Cyber Team. This team is responsible for applying an interdisciplinary, collaborative approach to plan,...
General Dynamics Mission Systems, Inc
May 31, 2026
Electrical Engineer – Entry Level
General Dynamics Mission Systems, Inc Manassas, VA
Basic Qualifications Requires a Bachelor’s degree in Electrical Engineering, or a related Science, Engineering or Mathematics field.    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: Support design and analysis of AC-DC and DC-DC power systems under guidance of senior engineers Assist with integration, testing, and troubleshooting of electrical hardware Develop test procedures and documentation for power electronics validation Perform component research and support trade studies for power system solutions Design cable assemblies and support PCB development efforts...
General Dynamics Mission Systems, Inc
May 31, 2026
Software Engineer – Entry Level
General Dynamics Mission Systems, Inc Manassas, VA
Basic Qualifications Requires a Bachelor’s degree in Software Engineering, or a related Science, Engineering or Mathematics field. 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:   Develop and maintain software for Payload Control Systems Collaborate with cross-functional teams to design and integrate software solutions Troubleshoot and resolve software issues to ensure optimal system performance Participate in code reviews and contribute to continuous improvement of software development practices   What Sets You Apart: • Identifies...
General Dynamics Mission Systems, Inc
May 31, 2026
Advanced Materials & Process Engineer - Composites
General Dynamics Mission Systems, Inc Marion, VA
Basic Qualifications Requires a Bachelor’s degree in Mechanical 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.   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 General Dynamics Mission Systems has an immediate opening for an Advanced Materials & Process Engineer  - Composites . This position provides an opportunity to further advance the cutting-edge technology that supports some of our nation’s core defense/intelligence...
General Dynamics Mission Systems, Inc
May 31, 2026
CWL Deputy Chief Engineer (Sr Advanced Systems Engineer)
General Dynamics Mission Systems, Inc Manassas, VA
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 ontainable within a reasonable time from 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 Duties and Responsibilities Coordinates requirements development, hardware/software design, verification, and validation activities Manages technical deliverables and coordinates technical review boards to review decisions with broad program...
General Dynamics Mission Systems, Inc
May 31, 2026
Materials & Process Engineer - Composites
General Dynamics Mission Systems, Inc Marion, VA
Basic Qualifications Requires a Bachelor’s degree in Mechanical 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. Responsibilities for this Position Make the world’s most advanced Radomes even smarter!   As a Materials & Process Engineer - Composites (Sr Mech Engr) for the ACS in Marion VA, you’ll be a member of our M&P dept. , a cross functional team...
General Dynamics Mission Systems, Inc
May 31, 2026
Sr Software Engineer - C++/Java - Active Secret clearance
General Dynamics Mission Systems, Inc Manassas, VA
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 At General Dynamics Mission Systems, we build advanced technologies that keep our nation safe and our warfighters prepared. Our engineers tackle some of the most complex and consequential challenges in defense, delivering solutions that redefine innovation and make a...
General Dynamics Mission Systems, Inc
May 31, 2026
Software Engineer – CSTK (Entry Level)
General Dynamics Mission Systems, Inc Manassas, VA
Basic Qualifications Requires a Bachelor’s degree in Software Engineering, or a related Science/Engineering fields. Linux 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 As a Software Engineer for the Surface Cybersecurity Toolkit(CSTK) projects, you’ll be a member of a cross functional team responsible for designing, developing, integrating and testing of COTS/GOTS cybersecurity software supporting the U.S. Navy's Surface Combat System and Elements.   We encourage you to apply if you have any of these preferred skills or...
General Dynamics Mission Systems, Inc
May 31, 2026
Senior Software Engineer - Active Secret clearance - $5,000 Sign On Bonus
General Dynamics Mission Systems, Inc Manassas, VA
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 active 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. This position is fully on-site in Manassas, VA or Middletown, RI . Responsibilities for this Position This position has a $5,000 sign on bonus.    We are hiring an Advanced Software Engineer.  Help make the technologies, products and services that make a difference. That’s the...
General Dynamics Mission Systems, Inc
May 31, 2026
C++ Software Engineer - Active Secret clearance
General Dynamics Mission Systems, Inc Manassas, VA
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. 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 . Candidate must be able to work onsite.  Responsibilities for this Position We are hiring a Software Engineer.  Help make the technologies, products and services that make a difference. That’s the opportunity that’s waiting for you at General Dynamics Mission Systems. We help our nation’s heroes keep...
Lockheed Martin
May 29, 2026
Chief Engineer Director, Undersea Mission Systems
Lockheed Martin Manassas, VA
Description: WHO WE ARE Lockheed Martin is revolutionizing the undersea domain with decades of proven expertise and a relentless drive for innovation. We're pushing the boundaries of what's possible, delivering game-changing capability that transforms data into decisive battlefield advantage. Our advanced undersea systems provide unmatched superiority, enabling submariners to dominate the depths. With full-spectrum sustainment, we ensure complex systems remain always-ready, always-operative, and always-effective from initial deployment through future modernizations. As a trusted partner, Lockheed Martin guarantees undersea superiority, empowering our customers to outmaneuver, outthink, and outperform in the most challenging environments . THE WORK Reporting to the Vice President Chief Engineer for MIC2, the Chief Engineer Director for the $1.4B UMS portfolio that includes the execution of the UMS portfolio of programs. As the UMS Chief Engineer, the selected individual will...
Lockheed Martin
May 29, 2026
Integration & Test Engineer
Lockheed Martin Dahlgren, VA
Description: WHAT WE'RE DOING SSDS is a Combat Direction System that provides capability to defend against Anti-Ship Missile (ASCM) attacks for carrier and large deck Amphibious ships classes. The SSDS is a vital combat system that integrates various sensors, weapons, and command systems to provide sailors and marines with a holistic view of the battlefield, enabling them to respond rapidly and effectively to threats. This upgrade significantly increases the system's capabilities, ensuring the Navy maintains its combat edge in the face of evolving maritime dangers. THE WORK We are looking for a strong technical engineer to support integration & test efforts at the System Integration Lab in Wallops Island, VA. The successful candidate will have experience and knowledge of the SSDS system and engineering life cycle processes. Ability to debug and troubleshoot systems that include software and hardware components. Basic Qualifications: • Minimum of 1+ years of related...
Lockheed Martin
May 29, 2026
Software Engineer Sr
Lockheed Martin Herndon, VA
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's Paragon Program is seeking a talented level 3 Software Engineer with a TS/SCI clearance to work from either our King of Prussia, PA or Herndon, VA location(s) . This is an EARLY-MID CAREER (level 3) ROLE where candidates typically require 3+ years of experience and...
Lockheed Martin
May 29, 2026
Software Engineer Sr
Lockheed Martin Herndon, VA
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's Paragon Program is seeking a talented level 3 Software Engineer with a TS/SCI clearance to work from either our King of Prussia, PA or Herndon, VA location(s) . This is an EARLY-MID CAREER (level 3) ROLE where candidates typically require 3+ years of experience and...
General Dynamics Mission Systems, Inc
May 29, 2026
Linux Software Engineer - Active Secret Clearance
General Dynamics Mission Systems, Inc Manassas, VA
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. Agile experience preferred,   CLEARANCE REQUIREMENTS: : Department of Defense requires an active 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 . Candidate must work onsite.  Responsibilities for this Position ROLE AND POSITION OBJECTIVES: As a Software Integration Engineer for the Multipurpose Interactive Trainer (MIT) team , you’ll be a member of a cross functional team responsible for delivering cutting edge...
LMI
May 28, 2026
Database DevOps Engineer
LMI Fort Belvoir, VA
Overview LMI is seeking a   Database DevOps Engineer to be part of a team that is designing and developing complex, cloud-based systems. This position requires an   Active 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 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....
Lockheed Martin
May 27, 2026
Senior Staff Project Engineer
Lockheed Martin Arlington, VA
Description: Lockheed Martin Corporation seeks a Project Engineer, Senior Staff to lead cross-functional business initiatives to include Governance, Tracking & Closure of projects to directly support the enterprise-wide transformation agenda with a focus on U.S based solutions that consider impact to the non-US international audience. Support Enterprise Business and Digital Transformation efforts through implementation, strategy, and integration with existing systems to create a competitive advantage and drive the strategic objectives of the U.S based Executive Leadership Team. Coordinate integration initiatives to ensure new business capabilities are delivered on time, within budget, and aligned with broader business needs. Oversee risk mitigation, schedule synchronization, and resource availability as well as stakeholder alignment across multiple functions and geographically dispersed organizations. Function as the primary point of contact for VP level and U.S Based...
Lockheed Martin
May 27, 2026
Systems Engineering Sr
Lockheed Martin Herndon, VA
Description: The coolest jobs on this planet… or any other… are with Lockheed Martin Space. At the dawn of a new space age, Lockheed Martin is a pioneer, partner, innovator, and builder. Our amazing people are on a mission to make a difference in the world and every single day we use our skills and experiences to create, design and build solutions to some of the worlds’ hardest engineering problems. Our culture encourages employees to dream big, perform with excellence and create incredible products. We provide the resources, inspiration and focus and if you have the passion and courage to dream big, we want to build a better tomorrow with you. 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 are creating future-ready solutions, erasing boundaries, and forming partnerships across industries and around the world. We are advancing technology and the workforce to...
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