Cryptographic Engineer
Fhenix is a blockchain R&D company building privacy-preserving infrastructure for Ethereum and EVM-compatible chains using fully homomorphic encryption (FHE).
Maintainer signals as of 9/2/2026
Funding history
Projects
About Fhenix
Fhenix develops privacy-focused infrastructure for Ethereum and EVM-compatible blockchains. Its core offering, CoFHE, is an off-chain FHE coprocessor that lets smart contracts compute on encrypted data, complemented by Solidity libraries, a threshold decryption network, and a TypeScript client SDK. The company serves Web3 developers and protocols building confidential DeFi, payments, tokenization, identity, and other privacy-preserving applications.
Skills
About the Role
You will develop and optimize fully homomorphic encryption implementations, design parallel cryptographic algorithms for GPU acceleration, and build secure cryptographic protocols in C/C++ and CUDA. You will analyze cryptographic research papers, translate theory into practical implementations, and coordinate with researchers to meet project goals.
Requirements
- Professional self-management, prioritization, and deadline management
- Expertise in parallel computing and GPU programming
- Proficiency in CUDA or C/C++
- Ability to read, understand, and implement mathematically oriented cryptographic papers
Responsibilities
- Develop and optimize fully homomorphic encryption implementations
- Design and implement parallel cryptographic algorithms for GPU acceleration
- Develop secure cryptographic protocol implementations in C/C++ and CUDA
- Analyze cryptographic research and translate theory into practical implementations
- Work independently and coordinate with the research team