We are hosting A Lockheed Martin Space In-Person hiring event on April, 17, 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 Systems Integration engineer, please apply to this requisition. This hiring event is for experienced professionals with an active security clearance. 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. As a Guidance, Navigation and Control Engineer:You will be involved in many of the following activities: - Apply missile guidance, navigation, and control expertise to modeling and simulation - Integrate Matlab/ Simulink models into a 6-DOF C simulation - Develop high fidelity models and simulation software - Build new source code in C and Python - Modify code in C , C, Matlab, Simulink, Fortran, Python, Linux shell, and YAML - Create unit tests - Execute simulation software on a high performance computing cluster including Linux systems or V - Ms - Work in an Agile DevOps environment with Docker/ Container and Kubernetes deployment - Collaborate with the performance analysts, Flight Software team, and customer - Algorithm Development. This position will require the willingness and ability to acquire a Secret clearance - Provide technical solutions to a wide range of difficult problems - Work under only general direction. - Flight hardware experience - Familiarity with Lockheed Martin specifications, tools, and procedures - Hands-on hardware experience - Experience working with suppliers - Strong communication skills and able to effectively work with customer and suppliers. - Bachelor of Science or higher from an accredited college in Electrical Engineering or related discipline, or equivalent experience/combined education. - Experience with circuit design, troubleshooting and / or circuit analysis. - Willing and able to obtain and maintain a Secret clearance which requires US Citizenship.