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# Testbed Software Engineer

- **Company:** Xona Space Systems
- **Location:** United States
- **Contract:** Permanent contract
- **Skills:** Automation of Tests, C++ (Programming Language), Communications Protocols, Continuous Integration, Software Debugging, Ethernet, Firmware, Hardware-In-The-Loop Simulation, Python (Programming Language), Regression Testing, Real Time Simulation, Real Time Systems, Safety Critical Systems, Hardware Testing, Integration Tests, Low Latency
- **Published:** June 9, 2026
- **Apply:** https://www.dice.com/job-detail/68220483-9866-4e62-9c99-aba91612d81f

## About the Role

* Experience building or owning production-quality HIL, SIL, or integrated test environments
 * Experience connecting real hardware to simulation (robotics, autonomy, automotive HIL, avionics, or embedded systems)
 * Hands-on expertise with embedded buses and lab instrumentation (RS-422/485, Ethernet, I2C/SPI, GPIO, DAQ)
 * Strong grasp of real-time systems: timing, latency, scheduling, determinism, resource constraints
 * Track record debugging across hardware, firmware, and software boundaries
 * Strong documentation and cross-functional communication skills

Nice to Have

 * Mission-critical or safety-critical systems experience
 * Hardware test environments integrated into CI/CD
 * Operations rehearsals, telemetry analysis, or anomaly investigations
 * Python, C/C++, or Rust development experience
 * Knowledge of aerospace communication protocols (CAN, Ethernet, RS-422/485)
 * Space experience is not required. We welcome robotics, autonomy, automotive HIL, aerospace, defense, and other mission/safety-critical systems backgrounds. If you don't meet every requirement but are excited about the role, apply anyway.

## Description

As a Testbed Software Engineer, you will architect and build our spacecraft Hardware-in-the-Loop (HIL) testbed software from scratch, integrating flight hardware (or engineering models) with real-time simulation and automated validation tooling. This means integrating flight hardware with real-time simulation and automated validation to test flight software, avionics interfaces, fault management, and operational workflows end-to-end before launch.

What You'll Own

 * Design the HIL testbed architecture: scalable patterns, reproducible baselines, maintainable infrastructure
 * Integrate flight hardware + simulation + command/telemetry + automated tests into deterministic workflows
 * Build interface layers for avionics and instrumentation (RS-422/485, Ethernet, I2C/SPI, GPIO, DAQ, power systems)
 * Implement the FSW simulation layer (sensor/actuator emulation, peripheral models, timing models, interface shims)
 * Design fault injection and scenario orchestration for FDIR, safe-mode, and recovery validation
 * Develop telemetry capture, decode, time alignment, replay, and automated reporting tools
 * Characterize system timing (latency, jitter, scheduling, resource usage) and define acceptance criteria
 * Automate regression testing and integrate HIL into CI/CD


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