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71 level 3 software engineer jobs found in Longmont, CO

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level 3 software engineer Longmont, CO
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Lockheed Martin
May 29, 2026
Level 3 Software Engineer
Lockheed Martin Longmont, 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. 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
May 29, 2026
Level 3 Software Engineer
Lockheed Martin Longmont, 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. 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
May 16, 2026
Level 3 Software 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. 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 02, 2026
Level 3 Software Engineer
Lockheed Martin Longmont, 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. 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 02, 2026
Senior Software Engineer, Level 3
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 is seeking an experienced Software Engineer who can guide a...
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
May 01, 2026
Senior Software Engineer, Level 3 - Embedded - Clearance Required
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 is seeking an experienced Software Engineer who can guide a...
Lockheed Martin
May 01, 2026
Senior Software Engineer, Level 3 - Embedded - Clearance Required
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 is seeking an experienced Software Engineer who can guide a...
Lockheed Martin
Jun 06, 2026
Electro-Optical Engineer
Lockheed Martin Louisville, CO
Description: ATC is seeking a Research Oriented Electro-Optical Engineer with familiarity in the development and demonstration of linear and nonlinear optical systems and devices. You should have experience in the construction of optical systems; experience in the specification, characterization and optimization of components for linear and/or nonlinear optical systems (examples include: lasers/amplifiers and frequency conversion devices); some familiarity with current state-of-the-art in solid state lasers/amplifiers and nonlinear optical materials. Knowledge of and some experience packaging photonics components, subsystems and systems for experimental payloads is desired. Knowledge of related laser-based remote sensing technologies is desired, including coherent and direct detection laser radar, radiometry, Fourier optics, or beam propagation. Your responsibilities in this role will include the following: · Specification and selection/acquisition of linear and/or nonlinear...
Lockheed Martin
Mar 17, 2026
Hardware Development Engineer-Level 3
Lockheed Martin Louisville, CO
Description: We are Lockheed Martin You will be the Hardware Development Engineer for the Hardware Development team which is responsible for delivering advanced hardware and embedded solutions for cutting edge aerospace programs. What You Will Be Doing As the Hardware Development Engineer you will be responsible for designing, developing, and integrating hardware and software components that power next generation aircraft and mission systems. Your work will directly support the F 35, F 16, and Skunk Works initiatives. Your responsibilities will include: • Utilizing SystemVerilog, Verilog, or VHDL to create robust FPGA IP cores. • Participating in all phases of hardware and software development, from concept through verification. • Driving Skunk Works research and development efforts on emerging technologies. • Creating architecture, logic designs, and system simulations for complex embedded systems. • Performing simulation and analysis of FPGA and embedded system...
Lockheed Martin
Jun 04, 2026
Cyber Security Engineer
Lockheed Martin Boulder, CO
Description: This position is for a Cyber Security Engineer on the Next Generation GEO (NGG) program based in Boulder, but also supported in Longmont CO. The selected candidate will be part of a dynamic Cyber engineering team that designs, develops, documents, tests, and maintains full spectrum cyber solutions. This position is specifically for an individual interested in leading Authorization and Accreditation using Risk Management Framework & Cyber Requirements activities for the NGG development systems. As a Cyber Security Engineer supporting the NGG program, your responsibilities will include: 1. Provide hands on systems and architecture support for the NGG Ground development team to meet Cybersecurity mission execution on NGG development & operational assets. 2. Evaluate and analyze system architecture and security design as they pertain to the Cyber domain. 3. Apply Cyber Security Engineering to improve the processing, configuration, transport, and usability of data...
Lockheed Martin
May 29, 2026
Database Administrator / Level 3
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. 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
May 29, 2026
Network Engineer / Level 3
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 Ready to make a difference? Join a team where your network expertise will keep the sensors that watch the sky running flawlessly, give our warfighters the split‑second advantage they need, and help keep the world safe. SBIRS and the Next‑Gen GEO OPIR ground stations form the backbone of the United States’ missile‑warning architecture. By delivering near‑real‑time, high‑confidence detection of ballistic missile launches and other hostile trajectories, these systems provide life‑saving early warning for the warfighter, enable rapid decision‑making, and support cueing of...
Lockheed Martin
May 29, 2026
Network Engineer / Level 2
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. And we’re reimagining how space can connect us, ensuring security and prosperity. THE WORK Lockheed Martin is seeking a talented level 2 Network Engineer with a Secret clearance to work from our Boulder, CO location . Join a team where your network expertise will keep the sensors that watch...
Lockheed Martin
May 29, 2026
Network Engineer / Level 4
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 Ready to make a difference? Join a team where your network expertise will keep the sensors that watch the sky running flawlessly, give our warfighters the split‑second advantage they need, and help keep the world safe. SBIRS and the Next‑Gen GEO OPIR ground stations form the backbone of the United States’ missile‑warning architecture. By delivering near‑real‑time, high‑confidence detection of ballistic missile launches and other hostile trajectories, these systems provide life‑saving early warning for the warfighter, enable rapid decision‑making, and support cueing of...
Lockheed Martin
May 29, 2026
Systems Engineer-IT / Level 3
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. And we’re reimagining how space can connect us, ensuring security and prosperity. THE WORK Lockheed Martin is seeking a talented level 3 Systems Engineer-IT with a Secret clearance to work from our Boulder, CO location . As Systems Engineer-IT, you will: Perform technical planning, system...
Lockheed Martin
May 29, 2026
Dev Sec Ops 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 The Lockheed Martin Next Generation Geo (NGG) team is seeking experienced level 3 DevSecOps Systems Engineer with an active Secret clearance to work from either our Boulder, CO or Longmont, CO location. This is an MID-SR (level 3) ROLE where candidates typically have 3+ years of...
Lockheed Martin
May 29, 2026
Cyber Security Engineer - Entry Level
Lockheed Martin Boulder, CO
Description: The coolest jobs on this planet... or any other... are with Lockheed Martin Space. At the dawn of a new space age, Lockheed Martin Space is a pioneer, partner, innovator, and builder. Our amazing people are on a mission to make a difference in the world. Every single day, we use our unique skills and experiences to craft, design, and build solutions to some of the world's hardest engineering problems. Our culture inspires our employees to dream big; perform with excellence; and build incredible products. We provide the resources, the support, and the focus. You bring the passion and courage to envision limitless possibilities. Together, we'll build a better tomorrow. Are you ready to further your career in Cyber Security by working for one of the top companies in the world? This position is for a Cyber Security Engineer on the Next Generation GEO (NGG) program based in Boulder, but also supported in Longmont CO. The selected candidate will be part of a dynamic...
Lockheed Martin
May 29, 2026
Cyber Security Engineer - Entry Level
Lockheed Martin Boulder, CO
Description: The coolest jobs on this planet... or any other... are with Lockheed Martin Space. At the dawn of a new space age, Lockheed Martin Space is a pioneer, partner, innovator, and builder. Our amazing people are on a mission to make a difference in the world. Every single day, we use our unique skills and experiences to craft, design, and build solutions to some of the world's hardest engineering problems. Our culture inspires our employees to dream big; perform with excellence; and build incredible products. We provide the resources, the support, and the focus. You bring the passion and courage to envision limitless possibilities. Together, we'll build a better tomorrow. Are you ready to further your career in Cyber Security by working for one of the top companies in the world? This position is for a Cyber Security Engineer on the Next Generation GEO (NGG) program based in Boulder, but also supported in Longmont CO. The selected candidate will be part of a dynamic...
Lockheed Martin
May 29, 2026
Cyber Security Engineer - Entry Level
Lockheed Martin Boulder, CO
Description: The coolest jobs on this planet... or any other... are with Lockheed Martin Space. At the dawn of a new space age, Lockheed Martin Space is a pioneer, partner, innovator, and builder. Our amazing people are on a mission to make a difference in the world. Every single day, we use our unique skills and experiences to craft, design, and build solutions to some of the world's hardest engineering problems. Our culture inspires our employees to dream big; perform with excellence; and build incredible products. We provide the resources, the support, and the focus. You bring the passion and courage to envision limitless possibilities. Together, we'll build a better tomorrow. Are you ready to further your career in Cyber Security by working for one of the top companies in the world? As a Cyber Security Engineer supporting the MUOS program, your responsibilities will include: • Conducting cyber risk assessment activities, vulnerability analysis, and analysis of mitigation...
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