Staff Flight Software Engineer

Xona Space Systems-posted 3 months ago
Senior
Burlingame, CA
51-100 employees
Publishing Industries
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Xona is the navigational intelligence company bringing real-time, centimeter-level certainty to any device, anywhere on Earth. With Pulsar - the world's most advanced PNT satellite infrastructure in Low Earth Orbit - Xona will offer a future-proof, backwards-compatible global positioning system optimized for absolute precision, superior power, and robust protection. We're seeking a Staff Flight Software Engineer. You'll serve as a primary contributor to the flight software design, working to shape system interfaces and component interactions.

  • Develop & Integrate: Implement embedded flight software modules in C++ on RTOS or space-grade frameworks; carry features from concept through flight-ready validation.
  • System Validation: Plan and execute comprehensive hardware/software integration tests, including fault-injection scenarios and performance benchmarking.
  • Cross-Functional Collaboration: Partner with hardware engineering, GNC, and operations to define interfaces, manage fault conditions, and implement mitigation workflows.
  • CCSDS TT&C Integration: Develop and validate CCSDS-compliant Telemetry, Tracking & Command (TT&C) subsystems-implement frame assembly/disassembly, packetization, CRC/error-control coding, and end-to-end link workflows.
  • Optimization & Reliability: Profile and tune software for CPU, memory, and I/O efficiency; contribute to FDIR logic and scheduler enhancements to maximize on-orbit reliability.
  • Mentorship & Best Practices: Coach mid-level engineers through design reviews and code walks; promote coding standards, automated testing, and CI/CD pipelines.
  • Documentation & Tooling: Produce clear technical artifacts - ICDs, test plans, runbooks - and help build digital tools for telemetry analysis and on-orbit diagnostics.
  • Experience: 8+ years developing C/C++ embedded software on RTOS or space-grade frameworks (cFS, F', TASTE, etc.).
  • Integration & Testing: Proven track record executing full-system hardware/software validation and fault-injection test campaigns.
  • Protocols & Interfaces: Deep expertise with RS-422/485, Ethernet, I2C, or similar communication buses in embedded environments.
  • Real-Time Systems: Solid understanding of real-time scheduling, FDIR principles, and performance profiling under resource constraints.
  • Communication: Excellent written and verbal skills for cross-team collaboration and technical documentation.
  • CCSDS Expertise: Hands-on experience implementing CCSDS Telemetry (TM) and Telecommand (TC) packet standards, including header/payload formats, Virtual Channel multiplexing, and CRC/error-control procedures.
  • Hands-on experience with on-orbit operations, telemetry analysis, or spacecraft HIL testbeds.
  • Background in aerospace or other safety-critical industries.
  • Advanced degree in Computer Science, Electrical Engineering, or related field.
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