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421 security clearance jobs found in Littleton, CO

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Lockheed Martin
Jan 24, 2026
Engineering Intern
Lockheed Martin Littleton, CO, USA
Description: 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. We are currently seeking a Software Engineering Intern for our Littleton, CO location in the summer of 2026. In this role you will: • Perform software engineering to include design, development, and software/hardware integration. •...
Lockheed Martin
Jan 24, 2026
Electronics Engineer IV, Avionics CCA Design, Secret Clearance
Lockheed Martin Littleton, CO, USA
Description: Join Our Team as an Avionics CCA Design Engineer where you will work on the development of a sophisticated state-of-the-art avionics product in a world class Integrated Product Development environment. Location: This position does not support teleworking ;the selected candidate will be located near our Lockheed Martin Space facility in: Littleton CO and be expected to work a flexible 9x80 schedule in the office full-time. 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...
Lockheed Martin
Jan 23, 2026
Computer Vision Product Engineer (Level II)
Lockheed Martin Littleton, CO, USA
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 : You’ll collaborate with some of the...
Lockheed Martin
Jan 23, 2026
Staff Financial Management
Lockheed Martin Littleton, CO, USA
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. We are seeking an Staff Financial Analyst to join our finance team supporting the Alpha...
Lockheed Martin
Jan 23, 2026
Electronics Engineer, Product Lead IV
Lockheed Martin Littleton, CO, USA
Description: Please join us as a Responsible Product Engineer , where you will lead the development and certification of the Flight Computer (FC) on the Next Generation Interceptor (NGI) program. Location: This position does not support teleworking ; you will be located near our Lockheed Martin Space facility in: Sunnyvale CA Littleton CO You will work a flexible 9x80 schedule in the office full-time. 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...
Lockheed Martin
Jan 23, 2026
RF Engineer Associate - Top Secret clearance
Lockheed Martin Littleton, CO, USA
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, in-vest, 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 work-force 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 junior RF Engineer to join our team in Littleton,...
Lockheed Martin
Jan 23, 2026
RF Engineer Associate - Top Secret clearance
Lockheed Martin Littleton, CO, USA
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, in-vest, 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 work-force 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 junior RF Engineer to join our team in Littleton,...
Lockheed Martin
Jan 23, 2026
Software Engineer, Level 2 - Clearance Required
Lockheed Martin Littleton, CO, USA
Description: Take your career to a new level and work at an extraordinary company in Littleton CO 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
Jan 23, 2026
Systems Integration and Test Engineer - Early Career
Lockheed Martin Littleton, CO, USA
Description: 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 Space is seeking a Systems Integration and Test Engineer - Early Career.   In this role, you will: • Support mechanical test and integration early planning activities for mechanical ground support equipment • Support Design...
Lockheed Martin
Jan 23, 2026
Financial Analyst Stf
Lockheed Martin Littleton, CO, USA
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. We are seeking an Financial Analyst Stf to join our finance team supporting a Program...
Lockheed Martin
Jan 23, 2026
Laser Communication Engineer - Top Secret clearance
Lockheed Martin Littleton, CO, USA
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, in-vest, 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 work-force 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 an advanced career Laser Communication Engineer to...
Lockheed Martin
Jan 23, 2026
Systems Integration and Test Engineer Senior
Lockheed Martin Littleton, CO, USA
Description: Lockheed Martin is seeking an experienced Senior Systems Integration & Test Engineer to join the Conventional Prompt Strike (CPS) Platform Integration Integrated Product Team (IPT) focused on CPS installation on US Navy submarines. In this role you will coordinate across the CPS industry and government team to plan and execute integration of the CPS Weapon System onto US Navy submarines. You will be involved in development, integration, and test of the CPS weapon system interfaces, and will also drive the planning of the CPS installations on each Navy submarine. You will work with engineers across the program to ensure success within critical deployment schedules. In this role you will be expected to identify areas of technical concern, engage teammates to develop key solutions, and support implementation of the solutions. This role gives you an opportunity for involvement in weapon system development across the program lifecycle: influencing requirements for new...
Lockheed Martin
Jan 23, 2026
Lead Program Security Representative
Lockheed Martin Littleton, CO, USA
Description: This position requires Active DoD SECRET Clearance with ability to obtain TS/SCI clearance. This position will serve as the lead Program Security Representative for a Strategic Missile Defense Program. The candidate will interface directly with Director level internal and external stakeholders to execute and enable missions of high importance to the United States. This position will require domestic travel approximately half of the time. Basic Qualifications: - Active DoD SECRET Clearance with ability to obtain TS/SCI clearance - Demonstrated knowledge of DoD Security Policies - Advanced knowledge in Industrial Security - 6-10 Years in Collateral Security Desired Skills: - TS/SCI clearance. - Demonstrated ability to effectively communicate with senior level internal and external personnel on significant matters often requiring coordination between organizations. - Demonstrated ability to articulate and present intelligent, decisive and risk-managed security...
Lockheed Martin
Jan 23, 2026
Software Engineer Associate
Lockheed Martin Littleton, CO, USA
Description: Lockheed Martin is leading the way in hypersonic missile development and we want you to be a part of it! We are creating the first hypersonic boost/glide system for the US Army and Navy here on the Conventional Prompt Strike (CPS) program, and our NGC-SW Integrated Product Team (IPT) is responsible for the algorithms and software that control it. Our group includes the Navigation, Guidance, and Control (NG&C or GN&C) subsystem, which flies the missile and glide body, and the embedded Flight Software (FSW) which hosts the NG&C algorithms and provides health, status, and sequencing for the entire system. Additionally, we develop and maintain the Flight Software testbeds (HILs or HWILs) which provide complete hardware integration testing with feedback and flight simulation to test the NG&C algorithms and flight software. Lockheed Martin Space is seeking a full-time Early Career, Software Engineer. In this role, you will be performing software...
Lockheed Martin
Jan 23, 2026
RF Engineer Staff (Level IV)
Lockheed Martin Littleton, CO, USA
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. Lockheed Martin Space is seeking a mid-career RF Engineer to join our team in Littleton, CO ! As an RF Engineer, you will architect, design, and develop RF systems...
Lockheed Martin
Jan 23, 2026
Electrical Systems Engineer
Lockheed Martin Littleton, CO, USA
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. Lockheed Martin seeks an innovative and talented electrical systems engineer to join the Global Security team in Denver, Colorado. • Establish system architecture and...
Lockheed Martin
Jan 22, 2026
Systems Engineer (Level 4) - RF Antenna Systems
Lockheed Martin Littleton, CO, USA
Description: The coolest jobs on this planet… or any other… are with Lockheed Martin Space OVERVIEW: 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 day we use our 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. Going to space is just the beginning. It’s what you do when you get there that matters. Lockheed Martin builds the satellites and spacecraft that do amazing things in space for government and commercial customers. Connecting people. Advancing discovery. And protecting what matters most. Lockheed Martin-built satellites...
Lockheed Martin
Jan 22, 2026
Material Planner Controller Supervisor
Lockheed Martin Littleton, CO, USA
Description: At Lockheed Martin Space, we are driven by innovation and integrity. We believe that by applying the highest standards of business ethics and visionary thinking, everything is within our reach – and yours as a Lockheed Martin Space employee. At Space we value your skills, training, and education. Come, join us and experience your future! We are currently seeking a Supervisor for the Denver Central Receiving and Inventory Management function at our Waterton facility in Littleton, CO. In this role you will be responsible for supervising the direct receipt, warehousing, and distribution of thousands of highly specialized electronic parts and systems. Materials managed and distributed by your organization support the manufacturing products made by Lockheed Martin Space such as GPS Satellites, ORION Space Vehicles, and NASA Space Exploration Missions. The work environment is exciting and fast paced and provides the opportunity to work with state-of-the-art inventory...
Lockheed Martin
Jan 22, 2026
Space Vehicle Test Manager
Lockheed Martin Littleton, CO, USA
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. -- We are seeking a Systems Integration and Test Manager to...
Lockheed Martin
Jan 22, 2026
Senior Staff Software Engineer, Mission Thread Lead
Lockheed Martin Littleton, CO, USA
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. Lockheed Martin is leading the way in hypersonic missile development and we want you to be a part of it! We are creating the first hypersonic boost/glide system for the US...
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