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9 level 3 software engineer jobs found in Longmont, CO

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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
Jun 02, 2026
Program Quality Engineer Sr.
Lockheed Martin Englewood, 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. As we enter a new era of Strategic Weapon Systems, Lockheed Martin is a pioneer, partner, innovator, and builder. Our outstanding people are on a mission to make a difference in the world and every single day we use our creative skills and experiences to craft, design and build solutions to some of the worlds’ hardest engineering problems. The LE2 Program Quality Engineer will support the Fleet Ballistic Missile (FBM) Quality Program in Denver, CO at the Jamaica Street Campus. This opportunity, as the LE2 Program Quality...
Lockheed Martin
Feb 19, 2026
ElectroMechanical Harness Engineer III
Lockheed Martin Englewood, CO
Description: Join us at Lockheed Martin as an Electro-Mechanical Engineer where you will be responsible for the D5 Life Extension II program for avionics harness designs. Location: This position does not support teleworking ;the selected candidate 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. Key activities you will accomplish in this role: • Provide producible designs that meet technical, cost, and schedule requirements, and work within an Integrated Product Team environment. • Prepare all applicable drawings and documentation needed for the fabrication and assembly of the hardware designed. • 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 problems. • Establish specifications for contract assemblers...
Lockheed Martin
Jun 02, 2026
Space Vehicle Test Engineer, Sr.
Lockheed Martin Littleton, CO
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. Do you want to join a team where employees envision the impossible, perform with excellence and build incredible products? What are Space Protection Programs (SPP)? When you join SPP you will be part of one of the most innovative and fastest moving organizations in Space. Come help build end-to-end Space Security Systems and utilize our cutting-edge capabilities to assure the security and health of our nation’s space assets. We push the boundary of what gets done in space. Come be one of the people playing a critical role to defeat the enemies of freedom. We are seeking a Space Vehicle Test Engineer to work...
Lockheed Martin
May 06, 2026
Computer Vision Engineer III, Senior (Rendering and Simulation)
Lockheed Martin Littleton, CO
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
Apr 07, 2026
Circuit Design Engineer III, Satellite Test Systems
Lockheed Martin Littleton, CO
Description: Join us as a Circuit Design Engineer where you will design and develop hardware and circuits for complex satellite and rocket test and measurement systems utilizing Common Off the Shelf (COTS) and custom hardware and software tools as well as, perform hardware engineering best practices to include: requirements analysis, design, and software/hardware integration. Location: This position does not support teleworking ; you will be located near our Lockheed Martin Space facility in: • Sunnyvale CA • Littleton CO You are expected to work a flexible 9x80 schedule in the office full-time. About Us: 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...
Lockheed Martin
Apr 01, 2026
Electronics Design Support Engineer III
Lockheed Martin Littleton, CO
Description: Join Our Team as an Electronics 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 ; 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. What does this role look like? Please join us as an Electronics Engineer where you will work with engineers in supporting both the design update and production phases, providing you with tremendous career growth potential along with meaningful assignments to stretch and hone your expertise. Key activities you will accomplish in this role: • Experience with electronic analyses such as WCA, parts stress analysis. • Experience with full avionics product life cycle • Knowledge of the definition, interpretation, and implementation of design requirements,...
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
Jun 06, 2026
Quantum Opto-electronics Research Manager
Lockheed Martin Louisville, CO
Description: Lockheed Martin Space Advanced Technology Center (ATC) is seeking a Quantum Opto-electronics Research Manager to lead personnel in the full life cycle of research & development of advanced quantum optical systems for the study of classical and quantum-mechanical phenomena in remote sensing and communications. Positions are available for experienced professionals with 10 or more years of experience performing and managing teams in the design, development, experimentation and reporting of research to measure fundamental classical and quantum-mechanical light-matter interactions. The successful candidate would have experimental research experience in atomic, molecular, nuclear, solid-state, thermal and other physical phenomena. The candidate would also have experience developing theories based on observed results of experiments and predicting phenomena based on theoretical considerations in areas such as acoustics, electricity and magnetism, electronics, heat,...
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