Senior Avionics Engineer position with responsibilities including architecture and implementation of core avionics elements for next-generation vehicles. Develop complete avionics systems from concept through delivery of qualified hardware; lead avionics hardware builds (PCB design, harnessing, embedded systems, environmental qualification); collaborate with propulsion, guidance and control, thermal and software teams; design and verify digital, analog, and mixed-signal boards; implement robust design and test processes; environmental testing; coordinate with suppliers; lead trade studies; maintain design docs and test reports; contribute to flight software architecture.