An advanced aerospace and defense integrator is seeking a Senior Test Engineer to lead the verification, validation, and flight-test strategy for a mission-critical airborne system. This is a full-time opportunity requiring a strong test engineering background supporting DoD C4ISR, avionics, or tactical communications systems. The role supports a major modernization effort through FY25-27 and requires an active TS/SCI clearance. This position will lead the design and execution of testing efforts