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127 level 3 software engineer jobs found

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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 29, 2026
Java Software Engineer - Space Mission Applications - Level 3
Lockheed Martin Colorado Springs, CO
Description: Protecting what matters most is the mission that matters most. 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 looking for talented...
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...
General Dynamics Mission Systems, Inc
Jun 14, 2026
20-098 C2BMC Network Engineer
General Dynamics Mission Systems, Inc Colorado Springs, CO
Basic Qualifications Requires a Bachelor’s degree in Engineering, or a related Science, Technology or Mathematics field. Also requires 5+ years of job-related experience, or a Master's degree plus 3 years of job-related experience.     CLEARANCE REQUIREMENTS:  Department of Defense TS/SCI 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 Help make the technologies, products and services that make a difference. That’s the opportunity that’s waiting for you at General Dynamics Mission Systems. We help our nation’s heroes keep our nation safe by creating solutions so advanced, they redefine innovation for the world. It’s an amazing challenge. And it’s...
General Dynamics Mission Systems, Inc
Jun 14, 2026
26-206 C2BMC Anti-Tamper Systems/Hardware Engineer
General Dynamics Mission Systems, Inc Colorado Springs, CO
Basic Qualifications Bachelor's degree in Systems Engineering, or a related Science, Engineering or Mathematics field, plus a minimum of 5 years of relevant experience; or Master's degree, plus a minimum of 3 years of relevant experience.   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: Relocation Package As a systems engineer for C2BMC , you’ll be a member of a cross functional team responsible for Coordinating with the Missile Defense Agency to conduct high-level Anti-Tamper and Threat Management Assessments.   We encourage you to apply if you have any of these preferred...
Lockheed Martin
Jun 12, 2026
Cyber Software Engineer II
Lockheed Martin Littleton, CO
Description: The Cyber Software Engineer (level 2) is a mid‑level role that requires owing security outcomes across the product lifecycle. In this position you will lead the definition of security architecture for new features and major refactors, conduct threat‑modeling investigations, and translate product requirements into concrete security controls. Responsibilities include spearheading comprehensive vulnerability assessments (static, dynamic, and dependency‑scanning) prioritizing vulnerability remediation, and ensuring continuous compliance with frameworks such as NIST, ISO 27001, and DoD RMF. The Cyber Software Engineer (level 2) will design, develop, and maintain advanced Python‑based automation that embeds security gates, secret scanning, policy‑as‑code, and automated remediation into CI/CD pipelines (GitLab, DevOps, Jenkins), and will evaluate emerging tools (e.g., SBOM generators, runtime protection platforms) for enterprise adoption. Authoring clear, detailed security...
Lockheed Martin
Jun 12, 2026
Software Engineer (Backend Development)
Lockheed Martin Colorado Springs, CO
Description: What We’re Doing: Come join the CommandIQ® (CIQ) team – a product line established in 2025 with sizable investment and support from RMS senior leadership. We are developing mission critical Battle Management and Command & Control capabilities for a complete Command and Control mission suite. Our solution provides the open architecture as well as mission apps that can be customized to each user’s needs. Customers can also easily integrate their favorite tools into a single CommandIQ® Common Operating Picture (COP) to meet their own, specialized mission requirements. Join us and become a part of the team that is actively designing and developing the initial baseline which has already generated significant customer interest both domestically and internationally! Check out these links for more information about our exciting suite of products: https://www.lockheedmartin.com/en-us/products/command-and-control.html https://www.youtube.com/watch?v=mYu06sRV398 The...
Lockheed Martin
Jun 12, 2026
Senior Software Engineer (Backend Development)
Lockheed Martin Colorado Springs, CO
Description: WHAT WE'RE DOING Come join the CommandIQ® (CIQ) team – a product line established in 2025 with sizable investment and support from RMS senior leadership. We are developing mission critical Battle Management and Command & Control capabilities for a complete Command and Control mission suite. Our solution provides the open architecture as well as mission apps that can be customized to each user’s needs. Customers can also easily integrate their favorite tools into a single CommandIQ® Common Operating Picture (COP) to meet their own, specialized mission requirements. Join us and become a part of the team that is actively designing and developing the initial baseline which has already generated significant customer interest both domestically and internationally! Check out these links for more information about our exciting suite of products: https://www.lockheedmartin.com/en-us/products/command-and-control.html https://www.youtube.com/watch?v=mYu06sRV398 THE...
Lockheed Martin
Jun 12, 2026
Sr. Software Engineer (Backend Development - System I&T Specialty)
Lockheed Martin Colorado Springs, CO
Description: WHAT WE'RE DOING Come join the CommandIQ® (CIQ) team – a product line established in 2025 with sizable investment and support from RMS senior leadership. We are developing mission critical Battle Management and Command & Control capabilities for a complete Command and Control mission suite. Our solution provides the open architecture as well as mission apps that can be customized to each user’s needs. Customers can also easily integrate their favorite tools into a single CommandIQ® Common Operating Picture (COP) to meet their own, specialized mission requirements. Join us and become a part of the team that is actively designing and developing the initial baseline which has already generated significant customer interest both domestically and internationally! Check out these links for more information about our exciting suite of products: https://www.lockheedmartin.com/en-us/products/command-and-control.html https://www.youtube.com/watch?v=mYu06sRV398 THE...
Lockheed Martin
Jun 12, 2026
Sr. Software Engineer (Backend Developer - Test Automation Specialty)
Lockheed Martin Colorado Springs, CO
Description: WHAT WE'RE DOING Come join the CommandIQ® (CIQ) team – a product line established in 2025 with sizable investment and support from RMS senior leadership. We are developing mission critical Battle Management and Command & Control capabilities for a complete Command and Control mission suite. Our solution provides the open architecture as well as mission apps that can be customized to each user’s needs. Customers can also easily integrate their favorite tools into a single CommandIQ® Common Operating Picture (COP) to meet their own, specialized mission requirements. Join us and become a part of the team that is actively designing and developing the initial baseline which has already generated significant customer interest both domestically and internationally! Check out these links for more information about our exciting suite of products: https://www.lockheedmartin.com/en-us/products/command-and-control.html https://www.youtube.com/watch?v=mYu06sRV398 THE...
Lockheed Martin
Jun 12, 2026
Project Engineer/Control Account Manager With clearance
Lockheed Martin Colorado Springs, CO
Description: Who We Are: At Lockheed Martin, we believe that by applying the highest standards of business ethics and forward-thinking, everything is within our reach – and yours as a Lockheed Martin employee. We value your unique skills and expertise, and we aim to give back continuously by offering a wide variety of benefits and amenities to help our employees live flexible, balanced, and fulfilling lives at, and outside of, work. What We’re Doing: Our Team, the Command and Control, Battle Management and Communications (C2BMC) Regional team, is constantly engineering, developing and integrating new capabilities for the U.S. Missile Defense System. protecting both the United States and its allies. This large, fast paced team, is composed of many small agile teams working together dynamic environment with a common mission to develop and deploy leading-edge missile defense technologies. The Work: The selected candidate will report to the Regional Applications Engineering Project...
Lockheed Martin
Jun 10, 2026
EMI/EMC/E3 Engineer
Lockheed Martin Highlands Ranch, 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 an Electromagnetic Engineering Effects (E3) Engineer, you will support the System...
Lockheed Martin
Jun 09, 2026
Systems Engineer - Clearance Required
Lockheed Martin Littleton, CO
Description: Who We Are: 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. 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. What...
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...
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