Senior Software Engineer, Real-Time Embedded (Secret)

Collins Aerospace, RTX’s aerospace leader, seeks a Sr. Software Engineer in Marlborough, MA. You will join cross‑functional teams, own the full product lifecycle, and advance engineering processes to the highest maturity levels. The ideal candidate has strong C++ experience, RTOS/embedded know‑how, Linux proficiency, and an active US government security clearance. This onsite role offers challenging defense programs and opportunities to shape critical systems.