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82 software engineer sr level 3 jobs found

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Lockheed Martin Onsite software engineer sr level 3
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Lockheed Martin
Jun 19, 2026
Software Engineer Sr - Level 3
Lockheed Martin Fort Worth, TX
Description: Join the F-22 IMIS (Integrated Maintenance Information System) team supporting the operational readiness and sustainment of the F-22 Raptor. IMIS provides mission-critical hardware and software solutions that interface directly with aircraft maintenance systems, automating maintenance processes, improving diagnostic capabilities, reducing maintenance cycle times, and increasing aircraft availability. As the Software Engineer Sr, you’ll guide the technology development lifecycle – from system and software design through automation tooling and infrastructure enhancements. Your core responsibilities include: • Develop, integrate, and debug software • Lead integration efforts involving software, hardware interfaces, databases, and external systems. • Determine root-cause analysis and resolution of complex technical issues affecting system performance, reliability, and maintainability. • Support software deployment, configuration management, and lifecycle sustainment...
Lockheed Martin
Jun 19, 2026
Software Engineer Sr - Level 3
Lockheed Martin Fort Worth, TX
Description: We are Lockheed Martin By bringing together people that use their passion for purposeful innovation, at Lockheed Martin we keep people safe and solve the world's most complex challenges. Our people are some of the greatest minds in the industry and truly make Lockheed Martin a great place to work. With our employees as our priority, we provide diverse career opportunities designed to propel development and boost agility. Our flexible schedules, competitive pay, and comprehensive benefits enable our employees to live a healthy, fulfilling life at and outside of work. At Lockheed Martin, we place an emphasis on empowering our employees by fostering innovation, integrity, and exemplifying the epitome of corporate responsibility. Your Mission is Ours. Lockheed Martin Aeronautics is seeking a Software Engineer Sr to join a high performing team focused on software in a DevSecOps development environment for the Maintenance Systems (MxSys) Line of Business. In this role,...
Lockheed Martin
Jul 02, 2026
Software Engineer Sr - Level 3
Lockheed Martin King of Prussia, PA
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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
May 29, 2026
Software Engineer Sr, Level 3
Lockheed Martin King of Prussia, PA
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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
May 28, 2026
Software Engineer Sr, Level 3
Lockheed Martin King of Prussia, PA
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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
May 28, 2026
Software Engineer Sr, Level 3
Lockheed Martin King of Prussia, PA
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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
May 28, 2026
Software Engineer Sr - Level 3 (Top Secret)
Lockheed Martin King of Prussia, PA
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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
May 28, 2026
Software Engineer Sr - Level 3 (Top Secret)
Lockheed Martin King of Prussia, PA
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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
May 27, 2026
Software Engineer Sr - Level 3 (Top Secret)
Lockheed Martin King of Prussia, PA
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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
May 27, 2026
Software Engineer Sr - Level 3 (Top Secret)
Lockheed Martin King of Prussia, PA
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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
May 23, 2026
Software Engineer Sr - Level 3
Lockheed Martin King of Prussia, PA
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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
Apr 30, 2026
Software Engineer Sr - Level 3 - (TS/SCI)
Lockheed Martin King of Prussia, PA
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.  Within LM Space, the Biscayne Program is looking for a highly motivated individual...
Lockheed Martin
Apr 22, 2026
Software Engineer Sr (level 3)
Lockheed Martin Palmdale, CA
Description: WHO WE ARE The Skunk Works (Lockheed Martin Advanced Development Programs) is looking for world-class talent in Software Engineering to be a part of a team that will carry on our 80-year tradition-making history in advanced aircraft development. The vehicle management software team writes software for a wide range of aircraft subsystems that make an airplane fly. We are a highly innovative, multi-site, fast paced team developing modular and reusable software to support both our current platforms and the aircraft of the future. WHAT’S IN IT FOR YOU 3-day weekend every weekend! 4-10 Mon-Thursday option + Flexible Schedules This team is working new development software where our team members get to work hands on from the lab to the aircraft in all stages of development, including design, code, integration, and lab and field test. We work on a wide range of technologies and give our team members the opportunity to drive their career towards their area of...
Lockheed Martin
Apr 10, 2026
Software Engineer Sr - Level 3
Lockheed Martin Fort Worth, TX
Description: We are Lockheed Martin Lockheed Martin is seeking Software Engineers to support the F-35 Common Reprogramming Tool (CRT). The F-35 CRT is used by our F-35 customer Reprogramming Labs to generate the Mission Data File (MDF) sets, which are pivotal to the execution of successful missions and overall operation of the F-35. We are in early development of the next generation application to meet our customers’ MDF generation needs. Getting in on the ground floor of this development gives the opportunity to become a subject matter expert on a next gen product that will service the F-35 fighter for years to come. Who You Are The ideal candidate will have experience in object-oriented software development and a broad range of software technical skills. They will work in one of our multi-discipline Agile scrum teams, performing software development in a Dev*Ops environment to build the modernized CRT tool in a Java-based microservices architecture with web-based...
Lockheed Martin
Jun 10, 2026
Software Quality Engineer Sr- Level 3
Lockheed Martin Palmdale, CA
Description: This position is for a Software Quality Engineer (SWQE) within the historic Lockheed Martin Skunk Works Organization. The one and only Skunk Works has a 75-year track record developing aircraft systems that push the boundaries of what’s possible. Trusted to solve critical national needs for our warfighters, the Skunk Works never shies away from seemingly unsolvable challenges and has a reputation for solving hard problems quickly, quietly, and at the highest quality. At Skunk Works, every line of code is a building block of national security and pioneering aerospace technology. Our Software Quality Engineering team is the trusted guardian of that code – ensuring that the complex software driving next generation systems meets the highest standards of safety, reliability, and cyber resilience. By joining this elite group, you’ll help shape the processes that turn groundbreaking ideas into mission critical reality, protecting both the integrity of the program and the...
Lockheed Martin
Jun 02, 2026
Level 3 - Software Quality Engineer, Sr.
Lockheed Martin Littleton, CO
Description: This position requires Active Top Secret security clearance with ability to obtain SCI access. 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 Software Quality Engineer responsibilities include: • Independent evaluation of software processes and products and their conformity to standards, models, and software engineering program-defined processes • Ensuring quality is built into program processes and products by checking for completeness, consistency, correctness, and conformance throughout the entire software development life cycle and maintenance activities to determine whether the program's objectives have been satisfied and if continuous improvement is needed • Developing, monitoring, measuring, and analyzing software metrics...
Lockheed Martin
Jul 02, 2026
Systems Architect Sr Stf - Autonomy Architecture - Level 5
Lockheed Martin Fort Worth, TX
Description: You will be the Systems Architect Sr Stf for the Systems Architecture Team which is responsible for shaping next‑generation autonomous capabilities for the Air Force. What You Will Be Doing As the Systems Architect Principal, you will be responsible for driving the vision and execution of autonomy architecture across Lockheed Martin’s Aeronautics portfolio. Your responsibilities will include: Collaborate with industry partners to define and advance the autonomous‑system vision. Design an autonomy architecture that emphasizes interoperability, scalability, and future‑capability growth. Lead a multidisciplinary team of software and systems engineers. Apply Digital Engineering principles (Cameo) to streamline development. Coordinate with Lockheed Martin Business Areas and Lines of Business to capture lessons learned and shape strategic direction. What’s In It For You We are committed to supporting your work‑life balance and...
Lockheed Martin
Jul 02, 2026
PTMS/Propulsion Controls Engineer – Level 3
Lockheed Martin Fort Worth, TX
Description: Lockheed Martin Aeronautics is seeking a highly skilled and experience Senior Software Engineer to support the design, development, integration, and verification of the F35 Engine Core Upgrade (ECU) and the Power Thermal Management System (PTMS) Update along with continued support of baseline fielded Propulsion and PTMS. What You Will Be Doing As a PTMS/Propulsion Software Engineer Sr you will be responsible for support of PTMS/Propulsion through its entire lifecycle. Your responsibilities will include: • Develop functional and physical architecture definitions • Develop and maintain detailed software requirements • Develop and test required hardware/software integration tests within a lab environment. • Develop models of the system in order to test software fixes with real aircraft data • Collaborate with cross functional engineers to troubleshoot systemic issues as well as aircraft faults. • Query fleet data and use data analytics to establish system level...
Lockheed Martin
Jul 02, 2026
Manufacturing Engineer Sr. (Electronics Fabrication, Level 3)
Lockheed Martin Grand Prairie, TX
Description: You will be the Manufacturing Engineer Sr. (Electronics Fabrication, Level 3) for the Missiles and Fire Control Manufacturing Engineering team. Our team is responsible for supporting sustainment re‑cap, re‑certification (MRO), and Customer Field Service (CFS) for missile systems. What You Will Be Doing As the Manufacturing Engineer Sr. you will be responsible for developing and maintaining manufacturing processes, work instructions, and risk‑mitigation plans while driving cost‑reduction initiatives. Your responsibilities will include, but are not limited to: Create and maintain work instructions, task lists, and re‑work/repair procedures for circuit card assemblies, harnesses, and electromechanical sub‑assemblies. Identify production risks, develop mitigation plans, and lead validation activities on the shop floor. Drive cost‑reduction projects to closure and support testing, tooling, and hardware issue resolution. Lead...
Lockheed Martin
Jul 02, 2026
System Integration and Test Engineer, Sr Stf. - level 5
Lockheed Martin Fort Worth, TX
Description: You will be the System Integration and Test Engineer, Sr Stf for the Operations Engineering team which is responsible for supporting and focusing on activities within the FTW Man In The Loop Labs, ensuring lab readiness, safety, and successful day‑to‑day operations. What You Will Be Doing As the System Integration and Test Engineer, Sr Stf you will be responsible for providing operational, technical support, and leadership for the LM Aero Fort Worth Man In The Loop Labs (MITL) Ops Team across multiple lines of business. Your responsibilities will include: Lead the Simulation Ops Team and troubleshoot daily technical lab anomalies. Provide customer‑service‑focused communication and interpersonal support. Coordinate with systems, software, hardware, IT, project leadership, CAMs, and external users and pilots. Plan and execute lab upgrade activities and integrate new lab equipment. Maintain lab safety, security, and configuration...
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