We are hosting A Lockheed Martin Space In-Person hiring event in April of 2026. This event will be by invitation only and will take place near or in Littleton, CO. The actual date and location will be disclosed at a later date. Please apply to be considered. We are hiring levels 2-5. If you are interested in joining Lockheed Martin as a software engineer, please apply to this requisition. This hiring event is for experienced professionals with a active security clearance and this event is for external applicants only. 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. Lockheed Martin Space is seeking a full time Software Engineer. In this role, you will support the software engineering lifecycle following the program Software Development Plan (SDP) to include requirements analysis, object oriented analysis & design, code & unit test, integration, and support to formal test/delivery. -- Real Time Operating System (RTOS) experience – (Green. Hill or Vx. Works)--Knowledge of Agile Software Development--Excellent written and verbal communication skills--Knowledge of Model Base Systems Engineering (MBSE)-- Previous experience writing and designing to software requirements --Experience with programming languages such as C, C -- Standard teaming: Ability to work with multi-disciplined teams-- Experience with full software life cycle development including SW design, architecture and integration & test--Bachelor’s degree in computer science, Aerospace Engineering or other related degree program from an accredited college/university-- Active/ Final Secret Clearance