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65 senior systems engineer level 3 jobs found

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Security Clearance Onsite senior systems engineer level 3
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Lockheed Martin
May 12, 2026
Senior Systems Engineer, Level 3
Lockheed Martin Cape Canaveral, FL
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! The FBM Program is experiencing significant growth, and we are currently seeking a Senior...
Lockheed Martin
Mar 14, 2026
Embedded Systems Security Engineer, Senior - Level 3
Lockheed Martin Orlando, FL
Description: You will be a Cyber Systems Security EMBEDDED Engineer in the Program Protection Organization. Our organization oversees all aspects of Anti-Tamper and embedded Cybersecurity across Missiles and Fire Control. We are chartered with providing the skills and innovative technologies to develop, design, produce and sustain secure products across our Lines of Business. What You Will Be Doing As the Cyber Systems Security Engineer you will be responsible for providing embedded System Security Engineering design and implementation in all aspects of System Security Engineering (SSE) process in development of Department of Defense (DoD) Weapon Systems. Your responsibilities will include: • Assessing and mitigating System Security threats/risks throughout the embedded Weapon System development life cycle. • Validating System Security Engineering requirements decomposition, allocation and analysis for embedded Weapon Systems. • Implementing System Security Engineering...
Lockheed Martin
May 16, 2026
RTS DevSecOps Engineer
Lockheed Martin Boulder, CO
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 skilled level 3 RTS DevSecOps Engineer with a final Secret security clearance to work from our Boulder, CO location. This is an EARLY-MID CAREER (level 3) ROLE where candidates typically require 3+ years of professional experience and a BS degree. The...
Lockheed Martin
May 15, 2026
Physics Modeling Systems Engineer, Sr
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 We are seeking an experienced Senior Systems Engineer to support multiple Rotary and Mission Systems (RMS) programs and participate in all phases of the systems engineering process (system design, requirements development, modeling and simulation and test). The engineer will leverage RMS systems engineering processes and procedures while performing their respective engineering and verification activities. In this important role, you will collaborate in an Agile environment with other engineering disciplines and program personnel. A desire to learn and adopt emerging technologies and tools will be key to success in this role. The core responsibilities of this role will be: •...
Lockheed Martin
May 15, 2026
Guidance, Navigation & Control Engineer III (Senior)
Lockheed Martin Sunnyvale, CA
Description: About Lockheed Martin Space : 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. About the Role : This position will support an...
Lockheed Martin
May 12, 2026
Passive Electro-Optical Sr Engineer -Orlando
Lockheed Martin Orlando, FL
Description: Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration, and sustainment of advanced technology systems, products, and services. At Lockheed Martin, we apply our passion for purposeful innovation to keep people safe and solve the world's most complex challenges. Advanced Programs is seeking an Electro-Optical (EO) Engineer who is passionate about EO and can apply technical skills to develop optimized solutions for complex challenges. What You Will Be Doing Your skill set should include physics-based modeling, FLIR characterizations, image processing and/or algorithm development. The EO Engineer must understand the sensitivities associated with the various parts of the imaging chain to quickly and effectively perform system design trades. Must be willing to increase technical depth and breadth in EO as a path...
Lockheed Martin
May 12, 2026
Cyber Software Engineer Senior Staff – DSP
Lockheed Martin King of Prussia, PA
Description: You should participate in our External Referral Program. Click here to submit a referral. If your referral is hired, you'll receive a $3000 payment! code-extrefer This position may be eligible for a $25K sign on bonus for external hires! Cyber Software Engineer Senior Staff – 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 / Cyber Software Engineer Senior Staff – DSP is leading multi faceted mission critical...
LMI
May 08, 2026
Cybersecurity Information System Security Officer (ISSO)
LMI Remote, UNAVAILABLE
Overview LMI is seeking a Cybersecurity Information System Security Officer (ISSO) with demonstrated experience managing the security posture of DoD information systems to support a United States Special Operations Command (USSOCOM) mission partner. 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...
Lockheed Martin
May 07, 2026
Senior Software Engineer / Embedded, Grand Prairie, TX
Lockheed Martin Grand Prairie, TX
Description: You will be the Senior Software Engineer Sr for the Lockheed Martin Missiles and Fire Control (MFC) team. Our team is responsible for designing, developing, and manufacturing precision engagement aerospace and defense systems for the U.S. and allied militaries. Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. MFC is a recognized designer, developer and manufacturer of precision engagement aerospace and defense systems for the U.S. and allied militaries. MFC develops, manufactures and supports advanced products for military customers that include the U.S. Army, Navy, Air Force, Marine Corps, NASA and dozens of foreign allies. MFC also offers a wide range...
Lockheed Martin
May 06, 2026
ADFG NGSRI Senior Staff Software Engineer / Embedded/C++ /Orlando, FL
Lockheed Martin Orlando, FL
Description: This position is responsible for all phases of the software development lifecycle including requirements analysis, design, code and unit test, and hardware/software integration and verification. The individual will work with embedded SME to create architectures for embedded systems. The designs will need to be vetted with the use of Design Assurance Reviews by all relevant stakeholders. The individual will develop embedded software in C++ and embedded operating system in an Agile environment using JIRA, Git and Confluence. The individual will need to apply appropriate standards, processes, procedures and tools throughout the development lifecycle. Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC)...
Lockheed Martin
May 06, 2026
MLB Embedded Senior Software Engineer - Orlando, FL
Lockheed Martin Orlando, FL
Description: You will be a Senior Software Engineer on our team at Lockheed Martin. Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. MFC is a recognized designer, developer and manufacturer of precision engagement aerospace and defense systems for the U.S. and allied militaries. MFC develops, manufactures and supports advanced products for military customers that include the U.S. Army, Navy, Air Force, Marine Corps, NASA and dozens of foreign allies. MFC also offers a wide range of products and services for the global civil nuclear power industry and the military’s green power initiatives. What You Will Be Doing As a Senior Software Engineer, your...
Lockheed Martin
May 06, 2026
MLB Embedded Senior Staff Software Engineer - Orlando, FL
Lockheed Martin Orlando, FL
Description: You will be a Senior Staff Software Engineer on our team at Lockheed Martin. Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. MFC is a recognized designer, developer and manufacturer of precision engagement aerospace and defense systems for the U.S. and allied militaries. MFC develops, manufactures and supports advanced products for military customers that include the U.S. Army, Navy, Air Force, Marine Corps, NASA and dozens of foreign allies. MFC also offers a wide range of products and services for the global civil nuclear power industry and the military’s green power initiatives. What You Will Be Doing As a Senior Staff Software Engineer, your...
SAIC
Apr 29, 2026
Senior Systems Administrator - RHEL
SAIC VA
Description SAIC is seeking a highly motivated and experienced Senior Systems Administrator - RHEL to join our MAJESTIC Joint Program Office (JPO) Team in Springfield, VA . This individual will play an integral role in managing and optimizing mission-critical Red Hat Enterprise Linux (RHEL) systems in a hybrid IT enterprise environment. The ideal candidate will have in-depth expertise in RHEL system administration, including configuration, maintenance, and performance optimization. Additionally, experience with virtualized environments and enterprise systems, including Windows Server and HCI solutions, is critical. The candidate will ensure system security, reliability, and efficiency while collaborating with cross-functional teams to support operations. This position requires on-site support in a high-security, fast-paced environment . Key Responsibilities: Administer, configure, and maintain Red Hat Enterprise Linux (RHEL)...
Lockheed Martin
Apr 25, 2026
F-35 Aircraft Field Support Engineer Staff (Rovaniemi AB, Finland)
Lockheed Martin Greenville, SC
Description: Join the Lockheed Martin Aeronautics Company as an Aircraft Field Service Engineer (FSE) on our Aeronautics Field Sustainment team! This position will support the Finnish Air Force at Rovaniemi AB, Finland. As a Nose to Tail (NTT) FSE, the preferred candidate will be a subject Matter Expert(SME) in Supportable Low Observable (SLO)/Structures. It is desired the individual also be an emerging authority in APG/Vehicle Systems (VS) and Avionics/Mission Systems (MS), with the skill set to accomplish troubleshooting and analysis of VS, MS, or SLO. The candidate will act as part of the Lockheed Martin Aeronautics Field Sustainment Team's technical interface to the on-site Customer (both Operations and Maintenance) in resolving issues arising from maintenance and modification activities for all matters dealing with the F-35 aircraft. What You Will Be Doing Responsibilities include: •Accomplish troubleshooting and analysis of difficulties experienced in the field. •...
Lockheed Martin
Apr 25, 2026
F-35 Aircraft Field Support Engineer Staff (Rovaniemi AB, Finland)
Lockheed Martin Greenville, SC
Description: Join the Lockheed Martin Aeronautics Company as an Aircraft Field Service Engineer (FSE) on our Aeronautics Field Sustainment team! This position will support the Finnish Air Force at Rovaniemi AB, Finland. As a Nose to Tail (NTT) FSE, the preferred candidate will be a subject Matter Expert(SME) in Supportable Low Observable (SLO)/Structures. It is desired the individual also be an emerging authority in APG/Vehicle Systems (VS) and Avionics/Mission Systems (MS), with the skill set to accomplish troubleshooting and analysis of VS, MS, or SLO. The candidate will act as part of the Lockheed Martin Aeronautics Field Sustainment Team's technical interface to the on-site Customer (both Operations and Maintenance) in resolving issues arising from maintenance and modification activities for all matters dealing with the F-35 aircraft. What You Will Be Doing Responsibilities include: •Accomplish troubleshooting and analysis of difficulties experienced in the field. •...
General Dynamics Mission Systems, Inc
Apr 24, 2026
Senior Systems Engineer
General Dynamics Mission Systems, Inc Taunton, MA
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 ROLE AND POSITION OBJECTIVES:   As a Systems Engineer, working with custom software built in-house, for our Cyber group, you’ll be amember of a cross functional team responsible for developing mission critical NSA-certifiedCybersecurity devices in a rapidly...
LMI
Apr 24, 2026
Data Engineer/Power BI specialist (USW FO) - TS/SCI required
LMI Alexandria, VA
Overview LMI is seeking a Data Analyst , with significant Power BI skills and experience, to support the Office of the Under Secretary of Defense for Acquisition and Sustainment (USD A&S). This position plays a critical role in translating leadership intent into actionable data insights, analytical deliverables, and decision-support dashboards. The ideal candidate is a trusted advisor who can anticipate information needs, synthesize complex datasets, and build intuitive tools that enable senior leadership to make data-driven decisions efficiently.   As part of LMI’s high-performing team, you will leverage advanced data engineering and analytics capabilities to streamline front office operations and enhance situational awareness across acquisition, logistics, and procurement activities.   LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes...
Lockheed Martin
Apr 23, 2026
F-35 Field Support Engineer, F-35 Program-MCAS Beaufort, Level 4
Lockheed Martin Beaufort, SC
Description: Join the Lockheed Martin Aeronautics company as an Aircraft Field Service Engineer (FSE) on our Aeronautics Field Sustainment (AFS) team! Our team is responsible for supporting the F-35 Program at our Marine Corp Air Station (MCAS) Beaufort, South Carolina location. What You Will Be Doing As a Nose to Tail (NTT) FSE, the preferred candidate will be a subject Matter Expert (SME) in Avionics/Mission Systems (MS), APG/Vehicle Systems (VS) or Supportable Low Observable (SLO)/Structures. While also being an emerging authority in the other two disciplines that they are not a SME in. The NTT FSE will possess the skill set to accomplish advanced troubleshooting and analysis of MS, VS, or SLO. The candidate will act as part of the Lockheed Martin Aeronautics Field Sustainment (AFS) technical interface to the on-site Customer (both Operations and Maintenance) in resolving issues arising from maintenance and modification activities for all matters dealing with the F-35...
Lockheed Martin
Apr 22, 2026
Cyber Systems Security Engineer
Lockheed Martin Marietta, GA
Description: At Lockheed Martin Aeronautics, we're taking innovation to the next level. From designing the most advanced air vehicle to designing aircraft that defies gravity, our engineers live on the cutting edge of technology. Never have the opportunities for a technical career been so limitless. The Cyber System Security Engineer candidate is responsible for ensuring that cyber security requirements are properly defined, decomposed, allocated, implemented, and assessed to produce a cyber-resilient security design solution for the target platform (Air System or Weapon System). This includes participating in working groups, design reviews, and formal artifact reviews alongside other Subject Matter Experts (SMEs) within the overall platform; and providing security expertise to ensure that cyber security is considered early in the product development lifecycle. Applicant is expected to Lead a range of cyber risk analysis and security assessment methods; implement patches and...
Lockheed Martin
Apr 15, 2026
JASSM Production Senior Software Engineer / Embedded / C++ / Troy, AL
Lockheed Martin Troy, AL
Description: As one of Lockheed Martin’s first cruise missiles, JASSM has experienced over 20 years of successful partnership with the U.S. Air Force, providing continued significant long-range, precision engagement capabilities for air-to-ground missions. The combat proven and mission effective weapon system is designed to destroy high-value, well-defended, fixed and relocatable targets from significant standoff range, keeping aircrews well out of danger from hostile air defense systems without compromise to lethality or reach. This position is responsible for all phases of the software development lifecycle including requirements analysis, design, code and unit test, and hardware/software integration and verification. The individual will develop embedded software in C++ and embedded operating system in an Agile environment using JIRA, Git and Confluence. The individual will need to apply appropriate standards, processes, procedures and tools throughout the development...
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