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30 level 3 software engineer jobs found

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Lockheed Martin
May 23, 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. And we’re reimagining how space can connect us, ensuring security and prosperity. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. THE WORK Lockheed Martin is seeking a talented level 3 Software Engineer with an active TS/SCI...
Lockheed Martin
Jun 19, 2026
DevSecOps Software Engineer Stf
Lockheed Martin Manassas, VA
Description: Who we are Lockheed Martin is a global leader in aerospace, defense, and technology solutions. Our Manassas campus is a thriving center of engineering expertise, fostering a culture that encourages creativity, excellence, and the creation of exceptional products. Our team is made up of dedicated professionals who are passionate about pushing the boundaries of what's possible. What We’re Doing At Lockheed Martin, we're at the forefront of cutting-edge technology and innovation. Our campus in Manassas, Virginia is a hub for engineering excellence, where we tackle some of the world's most challenging engineering problems. We pride ourselves on our culture of creativity, excellence, and product innovation. The Work Lockheed Martin Rotary and Mission Systems is seeking a DevSecOps Software Engineer Stf in Manassas, VA. In this role you will have the responsibility of: • Participate in a cross‑functional team to evaluate a large, complex legacy code base, assess...
Lockheed Martin
Jun 12, 2026
Satellite Mission Engr Sr
Lockheed Martin Fort Belvoir, 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. And we’re reimagining how space can connect us, ensuring security and prosperity. 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...
Lockheed Martin
Jun 12, 2026
Software Engineer
Lockheed Martin Manassas, VA
Description: Who We Are Lockheed Martin is a global leader in aerospace, defense, and technology solutions. Our Manassas campus is a thriving center of engineering expertise, fostering a culture that encourages creativity, excellence, and the creation of exceptional products. Our team is made up of dedicated professionals who are passionate about pushing the boundaries of what's possible. What We’re Doing At Lockheed Martin, we're at the forefront of cutting-edge technology and innovation. Our campus in Manassas, Virginia is a hub for engineering excellence, where we tackle some of the world's most challenging engineering problems. We pride ourselves on our culture of creativity, excellence, and product innovation. The Work Lockheed Martin Rotary & Mission Systems is seeking a full-time Software Engineer. In this role, you will perform software development tasks supporting Navy programs. The successful candidate will have experience and knowledge of coding in Java/C++...
General Dynamics Mission Systems, Inc
Jun 12, 2026
Reverse Engineer
General Dynamics Mission Systems, Inc Fredericksburg, VA
Basic Qualifications Education Requirements: 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.     Clearance Requirements: Department of Defense Top 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 Imagine a world-class engineering environment. Now add a team of exceptional talent along with technologies that are so advanced they’re often classified. That’s what you’ll find at General Dynamics Mission Systems. Here you’ll lead amazing engineers as they invent the technologies,...
Lockheed Martin
Jun 10, 2026
AI Software Engineer
Lockheed Martin Manassas, VA
Description: Who we are Lockheed Martin is a global leader in aerospace, defense, and technology solutions. Our Manassas campus is a thriving center of engineering expertise, fostering a culture that encourages creativity, excellence, and the creation of exceptional products. Our team is made up of dedicated professionals who are passionate about pushing the boundaries of what's possible. What We’re Doing At Lockheed Martin, we're at the forefront of cutting-edge technology and innovation. Our campus in Manassas, Virginia is a hub for engineering excellence, where we tackle some of the world's most challenging engineering problems. We pride ourselves on our culture of creativity, excellence, and product innovation. The Work Lockheed Martin Rotary & Mission Systems is seeking a full-time AI Software Engineer where you will be challenged to use your skills in a high-paced / high-visibility team environment. Why Join Us Your Health, Your Wealth, Your Life Joining Lockheed...
General Dynamics Mission Systems, Inc
Jun 09, 2026
Advanced Structural Mechanical Engineer
General Dynamics Mission Systems, Inc Herndon, VA
Basic Qualifications Bachelor's degree in Mechanical 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 Structural-Mechanical Engineer for Intelligence Systems, you will be responsible for performing structural analysis using applicable material resources, methods, and standards; perform design and development of mechanical systems; and carry out other tasks as required...
General Dynamics Mission Systems, Inc
Jun 08, 2026
HWT Functional Team Lead - Advanced Systems Engineer
General Dynamics Mission Systems, Inc Manassas, VA
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 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: The Heavyweight Torpedo (HWT) Functional Team Lead serves as the technical lead and team facilitator for the HWT functional area within the AN/BYG-1 Payload Control System (PCS). This position combines hands-on systems engineering with day-to-day...
Lockheed Martin
Jun 04, 2026
Senior DevSecOps Engineer
Lockheed Martin Manassas, VA
Description: Who we are Lockheed Martin is a global leader in aerospace, defense, and technology solutions. Our Manassas campus is a thriving center of engineering expertise, fostering a culture that encourages creativity, excellence, and the creation of exceptional products. Our team is made up of dedicated professionals who are passionate about pushing the boundaries of what's possible. What We’re Doing At Lockheed Martin, we're at the forefront of cutting-edge technology and innovation. Our campus in Manassas, Virginia is a hub for engineering excellence, where we tackle some of the world's most challenging engineering problems. We pride ourselves on our culture of creativity, excellence, and product innovation. The Work Lockheed Martin Rotary and Mission Systems is seeking a Senior DevSecOps Engineer in Manassas, VA. Who you are Key Responsibilities: • Participate in a cross‑functional team to evaluate a large, complex legacy code base, assess the current CI/CD...
Lockheed Martin
Jun 04, 2026
Systems Administrator
Lockheed Martin Herndon, VA
Description: • Provide Domain/Systems Administrator Engineer of the Mission LAN, and oversee the maintenance, optimal function, and patching of the LAN’s operating system, and the GOTS, COTS, and custom software products running on it. • Perform system startup, shutdown, backups, and restores and maintain records of the Cartoon operating system upgrades/changes for reporting purposes. • Conduct virus scanning and firewall protection of the Mission LAN in compliance with the Sponsor’s ISSM • Provide Data Transfer Officer (DTO) services between UNCLASSIFIED and CLASSIFIED networks as needed by the Sponsor • Coordinate assistance from the Sponsor’s corporate resources when required, if encountering a problem that the Contractor team cannot solve • Ensure security compliance with the Sponsor’s ISSM for all components of the network • Perform other system administration duties as requested by the Sponsor. Basic Qualifications: • Minimum 3 years experience as a Systems Administrator •...
Lockheed Martin
Jun 02, 2026
Systems Engineer
Lockheed Martin Manassas, 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. 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 • System downtime scheduling for planned and unscheduled maintenance • Ensuring lab users comply with operating procedures, security standards and lab rules o Maintain/update procedures, standards and rules • Coordination...
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...
General Dynamics Mission Systems, Inc
May 26, 2026
Digital Design Engineer
General Dynamics Mission Systems, Inc Manassas, VA
Basic Qualifications Bachelor's degree in Electrical or Computer 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 Duties and Tasks: Design of digital electronics including Field Programmable Gate Array (FPGA) development and circuit design Responsible for definition, design, verification and documentation Determines architecture, system simulation, and detailed design approach Defines module...
Lockheed Martin
May 15, 2026
Systems Engineering Lead (Staff)
Lockheed Martin Manassas, VA
Description: Who we are Lockheed Martin is a global leader in aerospace, defense, and technology solutions. Our Manassas campus is a thriving center of engineering expertise, fostering a culture that encourages creativity, excellence, and the creation of exceptional products. Our team is made up of dedicated professionals who are passionate about pushing the boundaries of what's possible. What We’re Doing At Lockheed Martin, we're at the forefront of cutting-edge technology and innovation. Our campus in Manassas, Virginia is a hub for engineering excellence, where we tackle some of the world's most challenging engineering problems. We pride ourselves on our culture of creativity, excellence, and product innovation. The Work In this exciting role, you will have the opportunity to collaborate with industry-leading design professionals and contribute to groundbreaking projects. Be a part of the SQQ-89 program Systems Engineering Team. Work with our team to develop tools for...
Lockheed Martin
May 01, 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 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 a BS...
Lockheed Martin
Apr 30, 2026
Ground Systems Support Engineer - Level 4
Lockheed Martin Arlington, VA
Description: As a ground systems support engineer, this person will be part of an integral technical interface team, supporting the on-site Customer, resolving complex issues arising from operations and / or maintenance activities. Performs technical planning, system integration, verification and validation, cost and risk, and supportability and effectiveness analyses for total systems, and information technology related responsibilities including design, development, and analysis of computer systems or programs based on and related to user or system design specifications; applying systems analysis techniques and procedures, including consulting with users to determine hardware, software, or system functional specifications. Analyses are performed at all levels of total system product to include: concept, design, fabrication, test, installation, operation, maintenance and disposal. Ensures the logical and systematic conversion of customer or product requirements into total...
Lockheed Martin
Apr 30, 2026
Staff Software Engineer (Image Processing)
Lockheed Martin Manassas, VA
Description: Who we are Lockheed Martin is a global leader in aerospace, defense, and technology solutions. Our Manassas campus is a thriving center of engineering expertise, fostering a culture that encourages creativity, excellence, and the creation of exceptional products. Our team is made up of dedicated professionals who are passionate about pushing the boundaries of what's possible. What We’re Doing At Lockheed Martin, we're at the forefront of cutting-edge technology and innovation. Our campus in Manassas, Virginia is a hub for engineering excellence, where we tackle some of the world's most challenging engineering problems. We pride ourselves on our culture of creativity, excellence, and product innovation. The Work The Integrated Submarine Imaging System (ISIS) program in Manassas, Virginia, is seeking a skilled Software Engineer to support the development and integration of advanced imaging capabilities for current and next‑generation submarine platforms. This...
Lockheed Martin
Apr 29, 2026
Cyber Software Engineer Senior Staff – DSP
Lockheed Martin Herndon, VA
Description: This position is participating in our External Referral Program. If you know somebody who may be a fit, click here to submit a referral. If your referral is hired, you'll receive a $3000 payment! This position may be eligible for a $25K sign on bonus for external hires! Cyber Software Engineer Princ. - DSP WHAT WE’RE DOING Lockheed Martin, Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the evolving threat of cyber warfare. As a cyber security professional at Lockheed Martin, you’ll protect the networks that our citizens and the world depend upon each minute. Here, you’ll work with cybersecurity experts on the forefront of threat protection and proactive prevention. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep the threats at bay. THE WORK The GG SIGNAL SWE leading multi faceted mission critical system development,...
Lockheed Martin
Apr 28, 2026
Software Engineer Sr C/C++
Lockheed Martin Manassas, VA
Description: Who we are Lockheed Martin is a global leader in aerospace, defense, and technology solutions. Our Manassas campus is a thriving center of engineering expertise, fostering a culture that encourages creativity, excellence, and the creation of exceptional products. Our team is made up of dedicated professionals who are passionate about pushing the boundaries of what's possible. What We’re Doing At Lockheed Martin, we're at the forefront of cutting-edge technology and innovation. Our campus in Manassas, Virginia is a hub for engineering excellence, where we tackle some of the world's most challenging engineering problems. We pride ourselves on our culture of creativity, excellence, and product innovation. The Work Lockheed Martin Rotary and Mission Systems is seeking a Software Engineer C/C++ Sr. in Manassas, VA. In this role you will have the responsibility of: • Participate in a cross‑functional team to evaluate a large, complex legacy code base, assess the...
Lockheed Martin
Apr 21, 2026
Information System Security Officer, Classified Cybersecurity
Lockheed Martin Herndon, VA
Description: This position requires TS/SCI clearance with the ability to obtain a CI polygraph. This position will perform duties as an Information Systems Security Officer at the Lockheed Martin Space facility in Herndon, Virginia. Candidates will typically have a Bachelor's Degree and 1+ years of experience. The work that ISSOs do can be summarized in this way: - You will have a direct impact to national security, ultimately contributing to protecting your loved ones – this is dynamic, gratifying and impactful work! - You will have the opportunity to engage in all aspects of the cyber discipline. - You can enjoy a work-life balance that allows for flex hours and a family-first culture. Key Responsibilities of this role includes: - Support day-to-day information system security operations including hardware and software implementations. - Carry out technical security administration of IS in accordance with internal LM and customer cybersecurity requirements, primarily the...
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