Protocol Engineer

Fhenix careers | Protocol Engineer • ECOSYSTEM • DOCS • BLOG What is FHE Job Description Fhenix is seeking a protocol engineer to join our core engineering team and work on low-level protocol design, FHE integration, and the tooling that powers secure computation at scale. We’re looking for a Protocol Engineer to join our core engineering team and help shape the next generation of privacy-first blockchain infrastructure. You’ll work on low-level protocol design, FHE integration, and the tooling that powers secure computation at scale. This role is ideal for someone who thrives in deep technical systems, cares about clean architecture, and is excited to bring novel cryptography to production-grade networks Key Responsibilities: • Design and implement core components of the Fhenix protocol (coprocessors, rollups, bridges) • Integrate FHE primitives into smart contract execution environments • Collaborate with cryptographers to translate research into a performant, secure code • Optimize protocol performance, latency, and scalability • Build tools and documentation to support dev teams using the protocol • Contribute to the long-term architecture and roadmap of our Coprocessor and Layer 2 stack Requirements: • 4+ years of experience in backend software development. • Proficient in at least one system-level or backend-focused language such as Go, Rust, C++. • Strong computer science fundamentals - data structures, algorithms, concurrency, operating systems, and networking. • Strong background in system design, performance tuning, and testing • Comfort-owning services end-to-end: from design and implementation to monitoring and maintenance. • Comfortable operating in uncharted territory - able to ramp up on new languages and concepts rapidly and solve problems where no clear path exists. • Experience working in high trust, async, globally distributed team Bonus Points: • Solid understanding of blockchain fundamentals (Ethereum and EVM or equivalent, L2s, bridges, rollups) or experience building distributed systems. • Experience with Rust, Go or C++. • Contribution to open-source projects, research collaborations or relevant technical blogs/public talks. • Familiarity with zero-knowledge proofs, multi-party computation, or FHE Submit Your Application You’ll do work that challenges you, with people who inspire you, and together, we’ll build something that truly matters. First name Last name Email LinkedIn City Country Upload File Max file size 10MB. Uploading... fileuploaded.jpg Upload failed. Max size for files is 10 MB. Thank you! Your submission has been received! Oops! Something went wrong while submitting the form. BUILD WITH FHENIX Confidential Computing with Fhenix for the Next Wave of Ethereum DeFi Join developers and protocols building the next generation of Apply to Partner Follow Fhenix Blog Docs Ecosystem Live Demos Careers Brand Assets