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81 senior software systems engineer jobs found

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Lockheed Martin
Feb 07, 2026
Senior Software Systems Engineer
Lockheed Martin Highlands Ranch, 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. The Space Software Product Line (SSPL) is seeking a Senior Software Engineer to join the...
General Dynamics Mission Systems, Inc
Feb 12, 2026
Senior Principal Software Systems Engineer
General Dynamics Mission Systems, Inc Boulder, CO, USA
Basic Qualifications Education Requirements: Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 10+ years of job-related experience, or a Master's degree plus 8 years of job-related experience. Agile experience preferred.     Clearance Requirements : Department of Defense Top 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: Developing mission-critical systems that help keep people safe is what we do. At General Dynamics Mission Systems, you’ll be part of the team that helps heroes make a true impact. The work we do is...
General Dynamics Mission Systems, Inc
Feb 12, 2026
Senior Advanced Software Systems Engineer
General Dynamics Mission Systems, Inc Boulder, CO, USA
Basic Qualifications Education Requirements : Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related experience. Agile experience preferred.   Clearance Requirements:   Department of Defense Top 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: Developing mission-critical systems that help keep people safe is what we do. At General Dynamics Mission Systems, you’ll be part of the team that helps heroes make a true impact. The work we do is important....
Lockheed Martin
Mar 04, 2026
Systems Engineer Senior (Software / Hardware focus)
Lockheed Martin Littleton, CO, USA
Description: "Ahead of Ready" 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 Software / Hardware Systems Engineer to join the Global Security team in Denver, Colorado....
Lockheed Martin
Apr 10, 2026
ElectroMechanical Packaging Engineer III
Lockheed Martin Englewood, CO, USA
Description: The Fleet Ballistic Missile Avionics team is seeking an experienced Electronics Packaging Engineer who will work closely with senior engineers to develop preliminary 3D concept models of space flight avionics hardware and ultimately advance them for flight use. Location: This position does not support teleworking ; you will be located near our Lockheed Martin Space facility in: Littleton or Englewood CO and be expected to work a flexible 9x80 schedule in the office full-time. What does this role look like? • Support trade studies on electronic enclosure design approaches and will provide technical data for informal and formal design review documentation and presentations. • Coordinate with thermal, dynamic, stress, reliability, EMC, and survivability analyses to assure compliant designs. You will support manufacturing and test disciplines in minimizing cycle time and resolving electronic packaging problems. • Establish specifications for contract...
Lockheed Martin
Apr 09, 2026
ElectroMechanical Packaging Engineer IV, Circuit Card Packaging
Lockheed Martin Englewood, CO, USA
Description: The Fleet Ballistic Missile Avionics team is seeking an experienced Electronics Packaging Engineer who will work closely with senior engineers to develop preliminary 3D concept models of space flight avionics hardware and ultimately advance them for flight use. Location: This position does not support teleworking ; you will be located near our Lockheed Martin Space facility in: Littleton or Englewood CO and be expected to work a flexible 9x80 schedule in the office full-time. What does this role look like? • Support trade studies on electronic enclosure design approaches and will provide technical data for informal and formal design review documentation and presentations. • Coordinate with thermal, dynamic, stress, reliability, EMC, and survivability analyses to assure compliant designs. • Support manufacturing and test disciplines in minimizing cycle time and resolving problems. • Establish specifications for contract assemblers and raw-material vendors....
Lockheed Martin
Apr 09, 2026
Test Engineer Lead
Lockheed Martin Colorado Springs, CO, USA
Description: WHAT WE'RE DOING Do you want to be part of a culture that inspires employees to innovate, perform with excellence, and build incredible products? If you have the passion, drive, and courage to dream big, then we want to build a better tomorrow with you. Come and join our team! Lockheed Martin’s Rotary and Mission Systems’ EMC2 team is looking for a proven and experienced lead test engineer to support the Peace Krypton (PK) program. THE WORK As the Lead Test Engineer in this position, you will: • Lead the development and execution of comprehensive test plans, including test strategy, test design, and test scripts • Collaborate with cross-functional teams, including systems engineering, software engineering, and hardware engineering, to ensure that systems and products meet customer requirements and industry standards • Develop and maintain test documentation, including test plans, test procedures, and test reports • Lead a team of test engineers, providing...
Lockheed Martin
Apr 08, 2026
Satellite Systems Engineer
Lockheed Martin Colorado Springs, CO, USA
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 Satellite Systems Engineer with a Secret clearance to work from our Colorado Springs, CO location . Join the Mission Integration team and work together to provide...
Lockheed Martin
Apr 08, 2026
Systems Engineering Manager
Lockheed Martin Highlands Ranch, 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. Lockheed Martin Space is seeking a highly skilled and motivated Systems Engineering...
Lockheed Martin
Apr 08, 2026
Electronics Engineer Asc. – Early Career (Spacecraft Test Systems)
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. As part of the Engineering and Technology Raptor Avionics Organization at Lockheed Martin Space, this role supports the development of electronic hardware and test systems that ensure mission success for spacecraft and ground systems. Our...
LMI
Apr 08, 2026
Satellite Communication Mission Engineer – Senior
LMI Colorado Springs, CO, USA
Overview LMI is seeking a Mission Engineer with deep expertise in communication and network modeling to join our dynamic team focused on the space domain. In this role, you will develop, simulate, and analyze complex space infrastructure systems including satellite constellations, ground stations, orbital networks, and resilient architectures. Your work will directly inform analytical recommendations for future force design decisions and optimizing space capabilities for mission effectiveness, survivability, resiliency, and strategic superiority. This position is perfect for an analytical thinker who thrives on applying rigorous theory to real-world space challenges, using data-driven simulations to guide high-stakes decisions in defense and national security space sectors. This is an on-site role in Colorado Springs, CO.   LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in...
Lockheed Martin
Apr 02, 2026
Network Engineer III (Secret Clearance)
Lockheed Martin Colorado Springs, CO, USA
Description: What We’re Doing At Lockheed Martin, our Command and Control, Battle Management and Communications (C2BMC) National Team (C2NT) is pioneering the development and integration of cutting-edge technologies to advance the Missile Defense System, safeguarding the United States and its allies. Our collaborative and agile organization operates in a fast-paced environment, driving innovation through tasks such as sensor/weapon integration, algorithm development, user interface development, automated testing, cyber security, enterprise/infrastructure services, and enhancing leading-edge missile defense technologies. The Work You will support the implementation, maintenance, and troubleshooting of Lockheed Martin’s enterprise network infrastructure for the C2BMC program. Your day‑to‑day duties include configuring and maintaining routers, switches, and firewalls (Cisco, Juniper, Fortinet, Palo Alto), monitoring LAN/WAN performance, and resolving connectivity, latency, and...
Lockheed Martin
Apr 02, 2026
Senior Thermal Engineer
Lockheed Martin Englewood, CO, USA
Description: The Senior Thermal Engineer will execute thermal‑analysis activities for aerospace and defense systems under the guidance of senior thermal leads. This role focuses on developing thermal models, performing steady‑state and transient heat‑transfer analyses, supporting design decisions for propulsion subsystem, and cooling solutions. In this role your responsibilities will include: Thermal Modeling & Analysis • Build and validate 2‑D/3‑D thermal FEM models using ANSYS Thermal Desktop • Conduct steady‑state, transient, conductive, convective, and radiative heat‑transfer studies. • Generate temperature, heat‑flux, and thermal‑gradient plots; calculate margins of safety. Design Integration • Work with system and subsystem engineers to incorporate thermal constraints early in the design cycle. • Provide thermal sizing recommendations for subsystem. Verification and Validation • Assist in defining test‑article requirements, instrumentation layout, and...
Lockheed Martin
Mar 31, 2026
ElectroMechanical Harness Engineer III
Lockheed Martin Englewood, CO, USA
Description: The Fleet Ballistic Missile Avionics team is seeking an experienced Lead Electromechanical Harness Engineer who will work closely with senior engineers to develop preliminary 3D concept models of space flight avionics Cable and Harnessing and ultimately advance them for flight use. Location: This position does not support teleworking ; you will be located near our Lockheed Martin Space facility in: Littleton or Englewood CO and be expected to work a flexible 9x80 schedule in the office full-time. What does this role look like? • Support trade studies on cable and harness design approaches and will provide technical data for informal and formal design review documentation and presentations. • Coordinate with thermal, dynamic, stress, reliability, EMC, and survivability analyses to assure compliant designs. • Support manufacturing and test disciplines in minimizing cycle time and resolving problems. • Establish specifications for contract assemblers and...
Lockheed Martin
Mar 31, 2026
ElectroMechanical Harness Engineer III
Lockheed Martin Englewood, CO, USA
Description: The Fleet Ballistic Missile Avionics team is seeking an experienced Electromechanical Harness Engineer who will work closely with senior engineers to develop preliminary 3D concept models of space flight avionics Cable and Harnessing and ultimately advance them for flight use. Location: This position does not support teleworking ; you will be located near our Lockheed Martin Space facility in: Littleton or Englewood CO and be expected to work a flexible 9x80 schedule in the office full-time. What does this role look like? • Support trade studies on cable and harness design approaches and will provide technical data for informal and formal design review documentation and presentations. • Coordinate with thermal, dynamic, stress, reliability, EMC, and survivability analyses to assure compliant designs. • Support manufacturing and test disciplines in minimizing cycle time and resolving problems. • Establish specifications for contract assemblers and...
Lockheed Martin
Mar 31, 2026
Cable and Harness ElectroMechanical Engineer II
Lockheed Martin Englewood, CO, USA
Description: Join us at Lockheed Martin as an ElectroMechanical Engineer where you will be responsible for product design, development, and production support for the Cable and Interconnects team on the Fleet Ballistic Missile (FBM) Program. Location: This position does not support teleworking; the preferred candidate will be located near our Lockheed Martin Space facility one of the Coolest places to work: Englewood CO or Littleton CO , and be expected to work in the office. What does this role look like? The Fleet Ballistic Missile Avionics team is seeking an experienced Electromechanical Engineer who will work closely with senior engineers to develop preliminary 3D concept models of space flight avionics Cable and Harnessing and ultimately advance them for flight use. Key activities you will accomplish in this role: • Develop Cable designs, performance and test requirements, and stress and thermal analysis. • Identify initial physical architecture for the...
Lockheed Martin
Mar 31, 2026
Cable and Harness ElectroMechanical Engineer II
Lockheed Martin Englewood, CO, USA
Description: Join us at Lockheed Martin as an ElectroMechanical Engineer where you will be responsible for product design, development, and production support for the Cable and Interconnects team on the Fleet Ballistic Missile (FBM) Program. Location: This position does not support teleworking; the preferred candidate will be located near our Lockheed Martin Space facility one of the Coolest places to work: Englewood CO or Littleton CO , and be expected to work in the office. What does this role look like? The Fleet Ballistic Missile Avionics team is seeking an experienced Electromechanical Engineer who will work closely with senior engineers to develop preliminary 3D concept models of space flight avionics Cable and Harnessing and ultimately advance them for flight use. Key activities you will accomplish in this role: • Develop Cable designs, performance and test requirements, and stress and thermal analysis. • Identify initial physical architecture for the...
Lockheed Martin
Mar 27, 2026
Full Stack Architect
Lockheed Martin Littleton, CO, USA
Description: The coolest jobs on this planet… or any other… are with Lockheed Martin Space. 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 single day we use our skills and experiences to create, design and build solutions to some of the worlds’ hardest engineering problems. The candidate will become part of the Space Classified Architecture and Governance Team. This role will provide build out support of architectures post Classified Architecture Review Board approval. Create a feedback loop to inform architecture designs. Identify and troubleshoot system issues and outages. Develop and maintain documentation related to system configurations, procedures, and troubleshooting. Perform root cause analysis and implement corrective actions Requirements collection, development of Operational concepts, use cases, mapping of business requirements to IT deployments to meet customer needs....
Lockheed Martin
Mar 27, 2026
Full Stack Architect
Lockheed Martin Littleton, CO, USA
Description: The coolest jobs on this planet… or any other… are with Lockheed Martin Space. 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 single day we use our skills and experiences to create, design and build solutions to some of the worlds’ hardest engineering problems. The candidate will become part of the Space Classified Architecture and Governance Team. This role will provide build out support of architectures post Classified Architecture Review Board approval. Create a feedback loop to inform architecture designs. Identify and troubleshoot system issues and outages. Develop and maintain documentation related to system configurations, procedures, and troubleshooting. Perform root cause analysis and implement corrective actions Requirements collection, development of Operational concepts, use cases, mapping of business requirements to IT deployments to meet customer needs....
Lockheed Martin
Mar 25, 2026
RTS DevSecOps Engineer
Lockheed Martin Boulder, CO, USA
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 Lockheed Martin is seeking a skilled RTS DevSecOps Engineer with a final Secret security clearance to work from our Boulder, CO location. This is an EARLY-MID CAREER (level 3) ROLE where candidates typically require 3+ years of professional experience and a BS degree. The Real-time...
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