**Description**

**Position Summary:**

The Principal Integration Engineer – Payload leads end-to-end integration of advanced radar and ISR payloads into spacecraft bus architectures. This role requires radar payload integration experience and supports complex interface, verification, and mission integration activities for national security space programs.

**Key Responsibilities:**

+ Lead integration of radar and ISR payloads with spacecraft bus subsystems across electrical, mechanical, thermal, RF, and command/data interfaces.
+ Develop and manage payload-to-bus interface control documents (ICDs) and verification artifacts.
+ Execute system-level functional integration, hardware bring-up, and payload performance testing.
+ Coordinate with systems engineering, RF payload, radar design, and MBSE/digital engineering teams.
+ Drive integration readiness events including interface reviews, IRRs, environmental test plans, and launch readiness ac...