Senior FPGA Engineer, Networking & Security

About the role Muon Space is seeking a Senior FPGA Engineer specialized in onboard networking, cryptography and security to design the network fabric and security architecture of our next-generation spacecraft, to join our High Performance Compute (HPC) team. You'll define how data moves across the spacecraft, from sensor front-ends through payload compute to downlink, and how it stays secure, both in flight and end-to-end to the ground. This is a hands-on FPGA engineering role with strong architectural influence: you'll define the concepts, write the RTL, and work shoulder-to-shoulder with our Staff Architect, EE team, and payload engineers to bring your solutions to life. This position is hybrid and requires working on-site in our San Jose, CA office three days per week. Responsibilities Define the onboard networking architecture for Muon spacecraft, including switching, routing, packet filtering, firewalling, deep packet inspection, and VPN concepts. Define and implement end-to-end encryption, packet-based encryption at router level, file-based encryption for onboard and downlink data. Drive the definition of an onboard Ethernet switching and routing device and evaluate implementation options (COTS, semi-custom, fully custom FPGA-based). Design and build a spacecraft NoC (Network-on-Chip) and robust FPGA-to-FPGA links, with continuous link health monitoring and reporting. Own the Ethernet PHY and MAC integration on FPGAs, link aggregation, and signal-integrity trade-offs, in close partnership with the HPC architecture and Electrical Engineering team. Apply FEC schemes (e.g., Reed-Solomon) to onboard and inter-FPGA links; translate networking and coding requirements into implementable RTL. Integrate the network fabric with customer payloads, ensuring interoperability and low-level link validation. Publish white papers on Muon's networking and security solutions and represent this work internally and (where appropriate) externally. Work hand-in-hand with the Staff Onboard Compute Architect on the team to harmonize networking and security into the broader compute architecture. Required Qualifications Bachelor's or Master's degree in Computer Science, Computer Engineering, Electrical Engineering, or a related field, plus 5+ years of professional FPGA engineering experience, with a specialization in networking, cryptography, security, or high-speed I/O. Deep, hands-on experience with Ethernet, link aggregation, and signal-integrity considerations, specifically at higher direct attached copper (DAC) lane rates. Strong practical experience applying cryptographic algorithms in hardware or firmware: AES, AES-GCM, ECC, IPSec/VPN handshakes, and familiarity with post-quantum cryptography (PQC). Working knowledge of FEC schemes, particularly Reed-Solomon, and the ability to translate BER and link-budget requirements into concrete FEC implementations. Proven experience defining network packet flows, switching/routing/filtering, deep packet inspection, firewalling, and VPN termination in embedded or FPGA-based systems. Strong HDL/RTL skills (SystemVerilog, Verilog, or VHDL) and familiarity with modern FPGA verification methodologies. Excellent written and verbal communication skills, including the ability to author white papers and architectural documents. Ability and willingness to obtain and maintain a U.S. security clearance. Active clearance is a plus. Nice-to-Have Skills Experience with a variety of spacecraft networks including Ethernet and SpaceWire. Experience implementing or integrating NoC (network on chip) fabrics on FPGA. Familiarity with space-grade or rad-tolerant FPGA platforms. Prior work on spacecraft avionics, payload data handling, or secure space-to-ground links. Contributions to standards bodies, open-source cryptographic implementations, or published research. Salary The salary range for this role is $184,000 - $208,000, plus a competitive equity grant and comprehensive benefits package. Final compensation will be determined based on skills, qualifications, experience, and geographic location as assessed during the interview process. About Muon Space Founded in 2021, Muon Space is an end-to-end Space Systems Provider that designs, builds, and operates LEO satellite constellations delivering mission-critical data. Our revolutionary, integrated technology stack enables customers to optimize every dimension of their missions for faster time-to-orbit and superior constellation remote sensing performance. Our state-of-the-art facility in the heart of Silicon Valley is optimized for manufacturing spacecraft and rapid, flexible payload integration at scale. From climate monitoring to national security, Muon Space is dedicated to delivering Earth Intelligence for a safer and more resilient world. Taking Care of Our Team At Muon salary is only part of our total compensation package. In addition to salary, full-time employees receive equity compensation as well as benefits including medical, dental, and vision insurance, a 401k retirement plan, short & long term disability and life insurance. We also offer three weeks paid vacation for new employees, along with 12 paid holidays, unlimited sick time and paid parental leave. Our mission embraces the entire planet and we believe our team should too. Muon is dedicated to creating a diverse and dynamic company and workforce. We believe in equal employment opportunity regardless of race, color, ancestry, religion, sex, age, national origin, citizenship, sexual orientation, marital status, disability, or gender identity. We value diversity in the workplace, and that starts with our applicants. We encourage you to apply, even if you don't check all the boxes, and we look forward to reviewing your application! In addition, if you need a reasonable accommodation as part of your application for employment or interviews with us, please let us know. ITAR/EAR Requirements This position requires access to export controlled information. To conform to U.S. Government export regulations applicable to that information, applicant must either be (A) a U.S. person, defined as a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (green card holder), (iii) refugee under 8 U.S.C. § 1157, or (iv) asylee under 8 U.S.C. § 1158, (B) eligible to access the export controlled information without a required export authorization, or (C) eligible and reasonably likely to obtain the required export authorization from the applicable U.S. government agency. The Company may, for legitimate business reasons, decline to pursue any export licensing process.