EpiSci is seeking a Senior GNC Engineer to join their innovative team working on tactical mission autonomy. The role involves developing AI aviators for cutting-edge aircraft, revolutionizing wireless tactical communication systems, and working with autonomous UAVs. Key responsibilities include providing modeling support using software like CIFER and STITCH, simulation support, flight test support, designing control system software, and integrating software for various autonomous aircraft systems. The ideal candidate should have a Master's degree in Aerospace, Electrical, or Mechanical Engineering with an emphasis in control systems, 3+ years of hands-on experience integrating software into aircraft systems, and experience with MATLAB, Simulink, CIFER, and STITCH. The position requires U.S. citizenship and eligibility for a U.S. SECRET security clearance. EpiSci values diversity and encourages applications from all backgrounds. This remote position offers a competitive salary range of $165,000 - $180,000 per year, with additional benefits and potential equity opportunities.