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34 senior software systems engineer jobs found in Littleton, CO

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Littleton senior software systems engineer Colorado
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Lockheed Martin
Jun 19, 2026
Orion Senior Systems Engineer
Lockheed Martin Littleton, CO
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. Lockheed Martin Space is seeking a full-time Orion Senior Systems Engineer. Be a part of...
Lockheed Martin
Jun 19, 2026
Orion Senior Systems Engineer
Lockheed Martin Littleton, CO
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. Lockheed Martin Space is seeking a full-time Orion Senior Systems Engineer. Be a part of...
Lockheed Martin
Jun 19, 2026
Orion Senior Systems Engineer
Lockheed Martin Littleton, CO
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. Lockheed Martin Space is seeking a full-time Orion Senior Systems Engineer. Be a part of...
Lockheed Martin
Jun 19, 2026
Senior Software Engineer (Level III) - Top Secret clearance
Lockheed Martin Littleton, CO
Description: Position details: Location: Littleton, CO Work Schedule: 9x80 Position type: Full-time onsite (this is not a hybrid position) _____________________________________________ 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...
Lockheed Martin
Jun 19, 2026
Cyber Systems Engineer III
Lockheed Martin Littleton, CO
Description: WHAT WE’RE DOING At the dawn of a new age, Lockheed Martin is a pioneer, partner, innovator and builder. Our amazing workforce are on a mission to make a difference in the world. Our World-class team leverages unique 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. WHO WE ARE We are leveraging emerging, digitally-enabled capabilities to lower cost, speed up development time and create innovative solutions to best serve our customers and stakeholders. We’re bringing the 4th Industrial Revolution to every role in the company. Are you ready to invent the future? Lockheed Martin Rotary & Mission Systems is on a journey of digital transformation as we...
Lockheed Martin
Jun 19, 2026
Guidance, Navigation & Control Engineer III (Sr.) - Interim Top Secret
Lockheed Martin Littleton, CO
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 Team: The Guidance, Navigation and Control...
Lockheed Martin
Jun 19, 2026
Senior Quality Engineer
Lockheed Martin Littleton, CO
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. This position is in one of the Coolest places to work: Denver, Colorado. Lockheed...
Lockheed Martin
Jun 13, 2026
Systems Engineer, Principal - Survivability & Nuclear Hardness
Lockheed Martin Littleton, CO
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. As a Principal Systems Engineer and the authority in Survivability Engineering, you will...
Lockheed Martin
Jun 09, 2026
Cyber Software Engineer- Early Career
Lockheed Martin Littleton, CO
Description: 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 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. This is a place for engineers, scientists, and problem-solvers who are ready to engage deeply, think critically, and build with purpose. You will not just launch a career. You will be part of something bigger. This is where the best are built. The Cyber Software Engineer Associate role is an entry‑level position focused towards recent graduates or early career professionals eager to begin applying cybersecurity principles within a fast‑moving cyber engineering environment. In this position you will work under...
Lockheed Martin
Jun 04, 2026
SDN Backbone Chief Engineer
Lockheed Martin Littleton, CO
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. This position is contingent upon contract award to Lockheed Martin. Estimated award date is currently August 2026. The applicant selected will be subject to a...
Lockheed Martin
Jun 04, 2026
Engineering Test Vehicle, Test Engineering Sr
Lockheed Martin Littleton, CO
Description: As the electronics engineer you will be responsible for testing a variety of electronic equipment, system interconnect and cabling designs in support of the Test Support Products You will participate in requirements analysis, configuration determination, design, materiel procurement, manufacturing, test and acceptance of cabling & interconnects for a wide variety of electrical and electromechanical test systems and multi-function integrated test equipment in support of the US Navy's Ballistic Missile Flight Test Program. As the electronics engineer you will mentor junior engineers, interface extensively with our customer, as well as, senior leadership. You will also create/update project/process documentation that align to project requirements. Specific responsibilities include but are not limited to: Lead the design, procurement, assembly, test, and verification of missile test systems, including data review and trending Develop requirements from...
Lockheed Martin
Jun 04, 2026
GN&C Systems Integration Engineer
Lockheed Martin Littleton, CO
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. A Level 5 GN&C Integration Engineer drives the end-to-end development, integration,...
Lockheed Martin
Jun 04, 2026
System Engineer-IT
Lockheed Martin Littleton, CO
Description: WHAT WE'RE DOING Join the RMS Signal Reconnaissance program and help deliver clear, secure communications for EMC2 customer missions. In this position you will work on Windows and Linux systems, providing day‑to‑day administration and supporting network infrastructure. This is your opportunity to challenge yourself 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 world’s hardest engineering problems for the RMS Signal Reconnaissance program. You’ll be guided by senior engineers while gaining hands‑on experience with the technologies that protect our nation’s information advantage. THE WORK As a Senior System Engineer-IT, you will: • Duties primarily focused on Linux/Unix administration, but also include Windows system administration and Network Engineering/administration for classified systems • Typical duties: managing Linux systems backups; configuration management...
Lockheed Martin
Jun 04, 2026
Simulation Systems Integration Engineer
Lockheed Martin Littleton, CO
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. A Level 5 Simulation Integration Engineer is a senior role responsible for...
Lockheed Martin
Jun 02, 2026
Senior Embedded Systems Integration & Test Engineer
Lockheed Martin Littleton, CO
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 Senior Embedded Systems Integration & Test Engineer will lead and execute...
Lockheed Martin
Jun 02, 2026
Software Engineer Sr, Low Level Embedded - Space Protection Programs
Lockheed Martin Littleton, CO
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. Space Protection Programs (SPP) is seeking an experienced Senior Software Engineer to...
Lockheed Martin
May 27, 2026
Project Engineer III – Mid Career (Spacecraft Test Systems)
Lockheed Martin Littleton, CO
Description: As part of the Engineering and Technology Raptor Avionics Organization at Lockheed Martin Space, our team is passionate about developing test systems that ensure mission success for spacecraft and ground systems. We tackle the toughest challenges in the industry every day and deliver innovative electronic solutions in a collaborative engineering environment. As a Senior Project Engineer, you will lead engineering projects and initiatives for spacecraft subsystem test and engineering activities. You will serve as a primary liaison between program teams, internal engineering staff, and stakeholders, ensuring project objectives are met on time, within budget, and in compliance with technical requirements. This role provides the opportunity to drive project execution, facilitate team performance, implement Agile practices, and mentor junior engineers while directly influencing program success. What will you do as a new hire? You will independently lead project planning,...
Lockheed Martin
May 23, 2026
Senior Electrical Engineer (Level III) - Top Secret Clearance
Lockheed Martin Littleton, CO
Description: Position details: Location: Littleton, CO Work Schedule: 9x80 Position type: Full-time onsite (this is not a hybrid position) 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...
Lockheed Martin
May 23, 2026
Software Integration/Test Engineer Asc Manager
Lockheed Martin Littleton, CO
Description: As a Software Engineer Asc Manager for Assembly Test Launch Operations (ATLO) Test Labs and Services, you will lead a team of cross disciplinary Software/Hardware Integration Engineers to provide dedicated support for lab test needs including bench top, short term, and long-term testing in service of multiple programs across LM Space. Responsibilities of this position include but are not limited to: • Collaborating with ATLO leadership to drive test execution and deliver commitments within cost and schedule • Determining priorities for team’s efforts based on changing requirements, budgets, and schedules across many projects. • Be responsible for leading and developing the team to fulfil test lab software needs, to develop and grow critical skills, and manage performance through Full Spectrum Leadership • Be responsible for recruiting, training, career mentoring, and performance management of individual contributors • Lead efforts to transform business practices...
Lockheed Martin
May 23, 2026
Software Integration/Test Engineer
Lockheed Martin Littleton, CO
Description: As a Software Integration/Test Engineer for Assembly Test Launch Operations (ATLO) Test Labs and Services, you will: • Provide Operations & Maintenance (O&M) Software support to include rebuilding machines, patching, debugging, and reconfiguring existing Automated Test Systems. • Testing new software developed by the larger team as an independent reviewer and tester. • Author Acceptance Test Procedures (ATPs), Engineering Functional Checkout Procedures (EFCPs), and Standard Operating Procedures (SOPs) for deployed software. • Collaborate with Systems, mechanical, electrical, software, and test engineers across labs and programs to develop, test, and validate new system capabilities to ensure a complete working solution. • Develop 3D CAD models and 2D drawings as part of integrated design solutions • Assist technicians during system assembly, checkout, and validation and lead troubleshooting efforts. • Must be interested and have experience working with...
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