Zipline is looking for software engineers to build the tools and infrastructure that power our systems validation and flight test organizations. This team develops precise, efficient, and scalable software solutions used to validate aircraft and ground systems at every level. Our work spans everything from integrating real avionics, sensors, actuators, and radios with high-fidelity simulated environments in bench-top Hardware-in-the-Loop (HIL) setups, to building applications that plan, orchestrate, and evaluate thousands of automated nominal and off-nominal real-world flight tests every day. This role directly impacts the speed, confidence, and quality of hardware and software development at Zipline. In this role, you will develop a deep understanding of Zipline’s end-to-end logistics system and work closely with cross-functional partners who rely on your tools to deliver reliable, flight-ready software. Most importantly, the systems you build will serve as the final line of defense before software and hardware is deployed globally to perform critical, real-world deliveries.