What does a space payload integration test engineer do?

A Space Payload Integration Test Engineer is responsible for ensuring that scientific instruments, satellites, or other payloads are correctly integrated and tested for compatibility with their launch vehicles. They coordinate mechanical, electrical, and software interfaces between the payload and the spacecraft, conduct tests to verify performance, and troubleshoot issues that arise during integration. Their work ensures that payloads operate as intended once deployed in space, contributing to mission success and safety.