Senior Software Engineer - Level 3

Reference: 734410BRPosted: 2026-07-22Location: Fort Worth, TexasClearance: Secret with Investigation or CV date within 5 yearsCompany: Lockheed MartinDescription:You will be the Senior Software Engineer - Level 3 for the Vehicle Management Software Team which is responsible for developing modular and reusable software for aircraft subsystems.What You Will Be DoingAs the Senior Software Engineer - Level 3 you will be responsible for advancing software that enables aircraft to fly, working across embedded avionics, ground station development, and mission systems.'Your responsibilities will include:'Full software lifecycle development spanning avionics services, ground station development, and mission system technologies.Support ground station development for manned and unmanned systems.Develop simulations to aid software development and testing.Interface with software and systems engineers to define requirements for rapid prototypes.Participate in integration and test events.What’s In It For YouWe are committed to supporting your work-life balance and overall well‑being, offering flexible scheduling options. 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 big, lead with a growth mindset, and make the impossible a reality? We provide the resources and give you the flexibility to enable inspiration and focus – if you have the passion and courage to dream big, work hard, and have fun doing what you love then we want to build a better tomorrow with you.Who You AreA collaborative, results‑driven software engineer with deep expertise in embedded systems and a passion for aviation. You thrive in fast‑paced, multi‑site environments and enjoy turning complex requirements into reliable, reusable code. This role offers the chance to influence cutting‑edge aircraft platforms and shape the future of aerospace software.Further Information About This OpportunityMUST BE A U.S. CITIZEN - This position is located at a facility that requires special access. The selected candidate must possess an active Secret clearance to start.Basic Qualifications:• 4-year degree in B.S. Computer Science, B.S Computer Engineering or B.S. Electrical Engineering• Technical leadership and mentoring of small teams• Experience with C/C++ programming languages• Experience with Linux or RTOS (real time operating systems) and associated development toolchains• Experience with developing software for avionics systems• Experience with the software development process in a team environment (peer reviews, unit testing, configuration management, defect tracking)• Experience with integrating hardware and software • Must be comfortable working in a lab environment and understand distributed systems• Secret with Investigation or CV date within 5 yearsDesired Skills:• Experience in scripting languages (e.g. python)• Experience using agile software development tools and methodologies (e.g. Git, JIRA, Jenkins, Confluence, etc.)• Experience with Modeling and Simulation • Experience with AFSIM• Experience with image generators and associated interfaces (e.g., CIGI)• Experience with frontend development (e.g., Qt)• Experience with backend development, transport, and messaging protocols, (e.g., UDP, TCP, Multicast, DDS, AMQ, etc.)• Experience with distributed simulation environments and associated standards (e.g., DIS, HLA, etc.)• Ability to build/maintain relationships and collaborate effectively with others• Strong decision making and judgment skillsSecurity Clearance Statement: This position requires a government security clearance, you must be a US Citizen for consideration.Clearance Level: Secret with Investigation or CV date within 5 yearsOther Important Information You Should KnowExpression of Interest: By applying to this job, you are expressing interest in this position and could be considered for other career opportunities where similar skills and requirements have been identified as a match. Should this match be identified you may be contacted for this and future openings.Ability to Work Remotely: Onsite Full-time: The work associated with this position will be performed onsite at a designated Lockheed Martin facility.Work Schedules: Lockheed Martin supports a variety of alternate work schedules that provide additional flexibility to our employees. Schedules range from standard 40 hours over a five day work week while others may be condensed. These condensed schedules provide employees with additional time away from the office and are in addition to our Paid Time off benefits.Schedule for this Position: 4x10 hour day, 3 days off per weekLockheed Martin is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.The application window will close in 90 days; applicants are encouraged to apply within 5 - 30 days of the requisition posting date in order to receive optimal consideration.At Lockheed Martin, we use our passion for purposeful innovation to help 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, develop, 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. We place an emphasis on empowering our employees by fostering an inclusive environment built upon integrity and corporate responsibility.If this sounds like a culture you connect with, you’re invited to apply for this role. Or, if you are unsure whether your experience aligns with the requirements of this position, we encourage you to search on Lockheed Martin Jobs, and apply for roles that align with your qualifications.Experience Level: Experienced ProfessionalBusiness Unit: AERONAUTICS COMPANYRelocation Available: PossibleCareer Area: Software EngineeringType: Full-TimeShift: First