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48 senior systems engineer level 3 jobs found

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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 06, 2026
Electrical Component Engineer / Electrical Engineer, Sr. (Level III)
Lockheed Martin Englewood, CO
Description: "Ahead of Ready" 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: For over 60...
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
Systems Engineer Stf - Clearance Required
Lockheed Martin Colorado Springs, CO
Description: WHAT WE'RE DOING Lockheed Martin is on the front line of global security, operating, maintaining, and sustaining an Integrated Air and Missile Defense system for a key U.S. international defense partner. In this mission‑critical role we assure 24/7 system readiness, enabling our ally to protect its airspace, safeguard lives, and maintain regional stability. THE WORK As a Network Engineer on this program you will: • Deploy, configure, and maintain routers, switches, firewalls, and network gear in deployable communication kits. • Monitor LAN/WAN performance, troubleshoot connectivity, latency, and packet‑loss issues, and provide on‑call support for critical events. • Implement core networking technologies (VLANs, OSPF, BGP, GRE tunnels, multicast) and contribute to design reviews, upgrades, and project deployments. • Work closely with other engineers to craft network architectures and execute field installations, which may include travel to remote sites and...
Lockheed Martin
Jun 02, 2026
Software Engineer (Frontend Developer)-Early Career
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 Work:...
Lockheed Martin
Jun 02, 2026
Electrical Component Engineer / Electrical Engineer, Sr. (Level III)
Lockheed Martin Englewood, CO
Description: "Ahead of Ready" 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: For over 60...
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
May 29, 2026
Network Engineer Staff (Secret Clearance)
Lockheed Martin Colorado Springs, CO
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
May 28, 2026
Test Engineer III, Secret Clearance
Lockheed Martin Littleton, CO
Description: The Fleet Ballistic Missile (FBM) program is seeking an Electronics Engineer to join the Electrical Ground Support Equipment (EGSE) team. Location: This position does not support teleworking ; you 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. 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...
Lockheed Martin
May 28, 2026
Test Engineer III, Secret Clearance
Lockheed Martin Littleton, CO
Description: The Fleet Ballistic Missile (FBM) program is seeking an Electronics Engineer to join the Electrical Ground Support Equipment (EGSE) team. Location: This position does not support teleworking ; you 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. 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...
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
1LMX RMS Systems Engineering - FULLTIME TELEWORK
Lockheed Martin Colorado Springs, CO
Description: We are committed to work-life balance by promoting this remote telework option. These job requirements allow the employee to work their entire schedule somewhere other than a Lockheed Martin designated office or job site. What We're Doing At Lockheed Martin RMS (Rotary & Mission Systems), we are driving a OneLM digital transformation to modernize processes and technologies. Our goal is to lead the Aerospace and Defense industry by leveraging cutting-edge digital capabilities to innovate solutions, reduce costs, and improve development efficiency. The Work We are seeking innovative, collaborative engineers to support this transformation. This role emphasizes cross-organization collaboration and solution architecture. The Systems Engineer interfaces with product teams, Cross-BA teams, stakeholders, and SEIT leadership to define and deliver digital architecture solutions that support the 1LMX transformation. Please note: This role requires the ability to...
Lockheed Martin
May 23, 2026
Senior Thermal Analyst
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. Lockheed Martin Space is seeking a full-time Senior Mechanical Engineer (Thermal...
Lockheed Martin
May 23, 2026
Software Engineer (level 2)
Lockheed Martin Littleton, CO
Description: WHO WE ARE The Skunk Works (Lockheed Martin Advanced Development Programs) is looking for world-class talent in Software Engineering to be a part of a team that will carry on our 80-year tradition-making history in advanced aircraft development. The vehicle management software team writes software for a wide range of aircraft subsystems that make an airplane fly. We are a highly innovative fast paced team working developing modular and reusable software to support both our current platforms and the aircraft of the future. WHAT’S IN IT FOR YOU 3-day weekend every weekend! 4-10 Mon-Thursday option + Flexible Schedules This team is working new development software where our team members get to work hands on from the lab to the aircraft in all stages of development, including design, code, integration, and lab and field test. We work on a wide range of technologies and give our team members the opportunity to drive their career towards their area of interest....
Lockheed Martin
May 15, 2026
Electronics Engineer III
Lockheed Martin Englewood, CO
Description: This is an exciting opportunity to work on the Fleet Ballistic Missile Program (FBM), a 63-year-old Program with a long-standing history of Mission Success and of a strong partnership with our Navy Customer! Are you an enthusiastic individual with a strong planning background that can thrive in an exciting fast-paced dynamic environment? Location: This position does not support teleworking ; you will be located near our Lockheed Martin Space facility in: Englewood or Littleton CO and be expected to work a flexible 9x80 schedule in the office full-time. What does this role look like? The new Hardware Engineer will support the LE2 program for Electrical Ground Support Equipment (EGSE). Use your strong electrical engineering skills to work with all project partners and define the future for FBM! Key activities you will accomplish in this role: In this dynamic role you will: • Participate in requirements analysis, configuration determination, design,...
Lockheed Martin
May 07, 2026
Tech Refresh Engineering Project Manager
Lockheed Martin Colorado Springs, CO
Description: WHAT WE’RE DOING Looking for a career opportunity to lead a modernization and enhancement program of advanced technology for deployment to international customers. If you want experience leading a strong and diverse team across multiple sites both domestic and international than this a job for you. Building relationships, enhancing system infrastructure, and deploying modern high end software solutions is the needs for this job. Lockheed Martin’s Rotary and Mission Systems’ C4ISR team is looking for a qualified technical leader to be the US based Engineering Program Manager for the EADGE-T Technical Refresh program. EADGE-T is modernizing its compute and infrastructure environment to pave the way for future enhancements enabling deployment of modular solutions and AI capabilities for the United Arab Emirates Integrated Air Missile Defense capability THE WORK In this important role, you will be: • Engineering Program Manager executing a multi-disciplinary team...
Lockheed Martin
May 06, 2026
Component Engineer Senior
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 Role As a Senior Component Engineer, you will serve as a critical liaison between...
Lockheed Martin
Apr 14, 2026
Electronics Engineer III
Lockheed Martin Littleton, CO
Description: This is an exciting opportunity to work on the Fleet Ballistic Missile Program (FBM), a 63-year-old Program with a long-standing history of Mission Success and of a strong partnership with our Navy Customer! Are you an enthusiastic individual with a strong planning background that can thrive in an exciting fast-paced dynamic environment? Location: This position does not support teleworking ; you will be located near our Lockheed Martin Space facility in: Englewood or Littleton CO and be expected to work a flexible 9x80 schedule in the office full-time. What does this role look like? The new Hardware Engineer will support the LE2 program for Electrical Ground Support Equipment (EGSE). Use your strong electrical engineering skills to work with all project partners and define the future for FBM! Key activities you will accomplish in this role: In this dynamic role you will: • Participate in requirements analysis, configuration determination, design,...
Lockheed Martin
Apr 10, 2026
ElectroMechanical Packaging Engineer III
Lockheed Martin Englewood, CO
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 02, 2026
Network Engineer III (Secret Clearance)
Lockheed Martin Colorado Springs, CO
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...
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