Zhenfei Zhang

Blockchain Architect | Cryptographer | Rust Engineer

I work on blockchain technology with a focus on cryptography. I have been working in cryptography since 2009 and in blockchain architecture and Rust engineering since 2018. I develop high-performance cryptographic code and publish research in the field. My most recent role was Chief Cryptographer at Polyhedra Network. My professional journey includes roles at leading blockchain companies: Algorand, Espresso, Ethereum Foundation, and Scroll.

I organized the Sumcheck Builder Group, fostering collaboration and innovation in Zero-Knowledge Proofs and Sum-Check Protocols through regular seminars.

I contributed to the Falcon signature scheme, a NIST PQC standard that is now being integrated by major blockchains. I also worked on the BLS standard, a core component that enabled Ethereum's BeaconChain upgrade.

Recent Focus Areas