Staff Flight Software Engineer

Xona Satellite Navigation Software Engineer

Xona is redefining satellite navigation with a resilient, high-performance alternative to GPS. Powered by a commercial constellation of LEO satellites, we deliver precise, secure, and robust positioning services that enable autonomy, advanced mobility, and infrastructure resilience. We don't settle for incremental gains—we're building the next generation of GNSS from the ground up.

What You'll Do

• Design Contribution: 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.

You'll Be a Great Fit If You…

• Are passionate about writing clean, maintainable embedded code and enjoy collaborating on low-level hardware/software integration.
• Thrive in influencing technical outcomes through expertise and teamwork, without direct managerial authority.
• Demonstrate meticulous attention to detail, a methodical debugging approach, and strong analytical skills in real-time systems.
• Take pride in elevating team practices and sharing knowledge to drive continuous improvement.

Requirements

• 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.
• To comply with U.S. Government space technology export regulations, applicant must be a U.S. citizen, lawful permanent resident of the United States (i.e. Green Card holder), or other protected individual as defined by 8 U.S.C. 1324b(a)(3).

Desired Qualifications

• 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.