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209 senior software engineer level 3 jobs found

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senior software engineer level 3
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Lockheed Martin
Jan 08, 2026
Senior Software Engineer, Level 3 - Clearance Required
Lockheed Martin Huntsville, AL, 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 full time Software Engineer. In this role, you will...
Lockheed Martin
Jan 07, 2026
Senior Software Engineer, Level 3 - Clearance Required
Lockheed Martin Sunnyvale, CA, 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. This Software Engineering position is part of an AEHF Flight Software team that designs, develops, tests, & supports various Software Products. The qualified...
Lockheed Martin
Nov 22, 2025
Senior Software Engineer, Level 3
Lockheed Martin Colorado Springs, 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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
Nov 22, 2025
Senior Software Engineer, Level 3
Lockheed Martin Colorado Springs, 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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
Nov 08, 2025
Senior Software Engineer (Level 3)
Lockheed Martin Colorado Springs, 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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
Nov 08, 2025
Senior Software Engineer (Level 3)
Lockheed Martin Colorado Springs, 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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
Nov 08, 2025
Senior Software Engineer (Level 3)
Lockheed Martin Colorado Springs, 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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
Nov 08, 2025
Senior Software Engineer - Level 3
Lockheed Martin Colorado Springs, 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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
Nov 20, 2025
Software Engineer Senior, Test Automation - Level 3
Lockheed Martin Fort Worth, TX, USA
Description: You will be the Software Engineer Senior - Test Automation for the Integrated Fighter Group (IFG) which is responsible for delivering advanced avionics test solutions for the F‑16 and FA‑50 programs. What You Will Be Doing As the Software Engineer Senior - Test Automation you will be responsible for driving automated test development and supporting system‑level verification activities. Your responsibilities will include: Develop and maintain automated test scripts using TWIN and Python for F‑16 and FA‑50 avionics systems. Build and enhance software tools/macros that streamline system‑level testing. Write requirements and design specifications for new test‑automation tools. Coordinate with the automated test environment team to execute test pipelines and analyze results. Support non‑automation tasks such as lab testing, procedure development, and budget estimation across multiple avionics domains. What’s In It For You We...
Lockheed Martin
Jan 21, 2026
Software Engineer Senior - Linux C++ Ada (Mid Career - Level 3)
Lockheed Martin Hill Air Force Base, UT, USA
Description: You will be the Software Engineer Senior for the Lockheed Martin Aeronautics Field Sustainment team at Hill AFB, Utah. Our team is responsible for providing support for Modular Mission Computer (MMC) Operational Flight Program (OFP) development in the Avionics Integration Support Facility (AISF). What You Will Be Doing Responsibilities include: • Code development in C++, C, Ada, and Assembly. • Debugging using Green Hills Multi / AdaMulti tools. • Target environments will be embedded MIPS and Power PC based flyable hardware as well as a simulated Solaris or Linux environment for desktop testing. [MIPS (an acronym for Microprocessor without Interlocked Pipeline Stages) is a reduced instruction set computer (RISC) instruction set architecture (ISA) developed by MIPS Technologies (formerly MIPS Computer Systems)]. • Maintain code and documentation within established configuration management systems: GIT and Dimensions. • Participate in Peer Reviews of...
Lockheed Martin
Jan 13, 2026
Senior Software Engineer, Systems - Level 3
Lockheed Martin King of Prussia, PA, 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 re-imagining 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 MK21A program is seeking a dynamic and experienced software engineer to support...
Lockheed Martin
Jan 23, 2026
Senior Supplier Quality Engineer TELEWORK FULLTIME
Lockheed Martin Bridgeport, CT, USA
Description: WHO WE ARE We provide the resources, inspiration, and focus - if you have the resourcefulness and perseverance to work hard, then we want to create a better tomorrow with you. WHAT WE'RE DOING At Lockheed Martin, we're revolutionizing the aerospace and defense sector through groundbreaking technology, advanced manufacturing processes, and a world-class team of professionals. Our mission-driven approach and unwavering dedication to excellence ensure that we continue to deliver superior products and solutions to our customers around the world. THE WORK Lockheed Martin Rotary and Mission Systems Supplier Quality Excellence is seeking a Senior Supplier Quality Engineer. In this role, you will support the Supplier Quality Operations team and the Rotary business by designing and executing a holistic communications strategy, which encompasses partnering with internal IT and external vendors to document and configure the planned Sikorsky Supplier Quality software...
Lockheed Martin
Jan 23, 2026
EOTS Software Engineer - Senior / Embedded / C++ - Orlando, FL
Lockheed Martin Orlando, FL, USA
Description: You will be a Senior Software Engineer on our EOTS team at Lockheed Martin. The Electro-Optical Targeting System (EOTS) is the world’s first sensor that combines forward-looking infrared (FLIR) and infrared search and track (IRST) functionality. Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. MFC is a recognized designer, developer and manufacturer of precision engagement aerospace and defense systems for the U.S. and allied militaries. MFC develops, manufactures and supports advanced products for military customers that include the U.S. Army, Navy, Air Force, Marine Corps, NASA and dozens of foreign allies. MFC also offers a wide range of products and...
Lockheed Martin
Jan 23, 2026
Systems Engineer, System Integration & Test, Staff - Level 4
Lockheed Martin Fort Worth, TX, USA
Description: You will be a Systems Engineer, System Integration & Test, Staff for the Architecture, Design, Integration & Test (ADIT) – F‑22 System Integration & Test (SI&T) team which is responsible for delivering mission‑critical system capability integration, maturation, and regression testing across all F‑22 modernization efforts. What You Will Be Doing As a Systems Engineer, System Integration & Test, Staff you will be responsible for providing system‑level functional test and integration expertise while supporting key programmatic roles. Your responsibilities will include: Act as Control Account Manager for assigned work packages, tracking cost, schedule, and performance metrics to meet program objectives. Serve as Deputy Product Line Owner, collaborating with product‑line leadership to prioritize features, manage backlog items, and align development efforts with strategic goals. Lead proposal development as Proposal Lead,...
Lockheed Martin
Jan 23, 2026
Software Engineering Staff - Level 4
Lockheed Martin Fort Worth, TX, USA
Description: We are Lockheed Martin Lockheed Martin is seeking a highly experienced Software Engineer to design, develop, and implement a modern software framework for the F-35 Ground Systems Mission Planning Environment (MPE) project. The MPE is a critical component of the F-35 program, enabling all ground-based operations and playing a vital role in the successful execution of missions and overall operation of the aircraft. As a Senior member of the F-35 Ground Systems MPE Software team, the successful candidate will be responsible for guiding a team of Software Engineers in the design and development of a new contract aimed at modernizing the Mission Planning product and tools. This Senior role requires a deep understanding of software architecture, technical vision, and the ability to drive the successful implementation of this complex project. Who You Are The successful candidate will assume a technical senior software role, responsible for leading the software...
Lockheed Martin
Jan 22, 2026
Sr Systems Engineer – Radar Integration and Test
Lockheed Martin Moorestown, NJ, USA
Description: As a part of the Lockheed Martin community, we take on challenges and find solutions using creativity and collaboration. If you’re looking to be a part of a passionate team solving these complex problems, then Rotary and Mission Systems is the place for you. 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...
Lockheed Martin
Jan 22, 2026
System Engineer Stf - level 4
Lockheed Martin Fort Worth, TX, USA
Description: You will be the System Engineer Stf for the F‑35 System Integration and Test team which is responsible for driving system integration and testing across the F‑35 program. What You Will Be Doing As the System Engineer Stf you will be responsible for establishing, owning, and advancing the core metrics that guide F‑35 lab operations, system defect tracking, and stability monitoring. Your responsibilities will include: Design, implement, and maintain the end‑to‑end metric framework for F‑35 hardware‑in‑the‑loop, virtual, software‑in‑the‑loop, and mixed‑reality labs. Define and track key performance indicators for line‑of‑business (LOB) test outcomes, system defects, and stability events, ensuring they align with program milestones. Lead the collection, analysis, and reporting of lab and test‑execution data to provide actionable insight to senior stakeholders. Partner with software, architecture, design, and system‑test teams to embed metric...
Lockheed Martin
Jan 22, 2026
Software Engineer Senior Staff (Skunk Works) - Level 5
Lockheed Martin Palmdale, CA, USA
Description: What You Will Be Doing As the Senior Staff software engineer you will lead the air vehicle simulations team through the full development lifecycle, including requirements generation, software design, implementation, integration, and flight test. Your responsibilities will include: • Developing next generation Avionics services, safety critical OFP software • Integrating flight critical hardware subsystems • Participating in end-to-end integration activities including a multitude of host systems, such as live assets of varying capability and structure, simulated systems, and laboratory environments with constructive simulations, physical hardware, and system simulations What’s In It For You From onsite to remote, we offer flexible work schedules to comprehensive benefits investing in your future and security, Learn more about Lockheed Martin’s comprehensive benefits package here. Do you want to be part of a company culture that empowers employees to think...
Lockheed Martin
Jan 22, 2026
System Safety Engineer - Early Career - Orlando, FL
Lockheed Martin Orlando, FL, USA
Description: Lockheed Martin Missiles and Fire Control (MFC) is a recognized leader in the design, development, manufacture, and sustainment of advanced combat weapon systems, including precision engagement ground and air-launched tactical missiles, defense systems, and situational awareness systems for the U.S. and allied militaries. Missiles and Fire Control is seeking new graduates for System Safety Engineering positions in Orlando, FL! The System Safety Engineer (SSE) Associate (Asc) is responsible for ensuring that the products developed at LMMFC and sold to the customer are safe for the warfighter to use. A successful candidate will employ safety analysis techniques which will be performed on the end item and its subsystems. The primary job responsibility will be that of performing hazard analysis in accordance with MIL-STD-882 and contractual requirements. The SSE Asc analyzes and recommends safety features and controls for system design, software, training and...
Lockheed Martin
Jan 22, 2026
System Test Engineer - Secret Clearance
Lockheed Martin Colorado Springs, CO, USA
Description: What We Do Our team, the Command and Control, Battle Management and Communications (C2BMC) National Team (NT) at Lockheed Martin, is dedicated to engineering, developing, and integrating new capabilities for the Missile Defense System that protects the United States and its allies. While we are part of a large organization, we operate within smaller, agile teams in a fast-paced, dynamic environment. Our responsibilities include Sensor/Weapon Integration, Algorithm Development, User Interface Development, Automated Testing, Cyber Security, and enhancing critical missile defense technologies. The Work The System Test Team is responsible for planning and analyzing every MDS ground and flight test in which the C2BMC program participates. Ground‑test activities span pairwise testing, Continuous Developmental Integration (CDI), Integrated Ground Test (GTI), Distributed Ground Test (GTD), cyber tests, Space Domain Awareness (SDA) exercises, and pre‑flight...
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