BTC $80,859 -0.89%ETH $2,609 -1.13%XRP $1.39 -2.82%SOL $109 -2.57%DOGE $0.08569 -3.45%USDT USDC BTC $80,859 -0.89%ETH $2,609 -1.13%XRP $1.39 -2.82%SOL $109 -2.57%DOGE $0.08569 -3.45%USDT USDC

Jordi Baylina

Jordi is in charge of overseeing the technical development of the Polygon Hermez zkRollup and is now engaged in zkEVM implementation to scale Ethereum. As one of the strongest Solidity programmers in the world, Jordi has made significant contributions to the Ethereum community.

Jordi is the co-founder of the White Hat Group, which played a major role in rescuing funds from TheDAO and Parity Multisig hacks. He is the creator of a number of well-known contracts in the Ethereum ecosystem, including the MiniMe token contract, the elliptic curves Solidity library, and many others.

Jordi is also a well-respected auditor, most notably leading teams to audit the MakerDAO Stable Coin system and Aragon project. Jordi is the co-founder of the charitable giving website Giveth, DAppNode, Iden3 and most recently, Polygon Hermez.

Current Work

Technical LeadPolygon Hermez zkEVM
Tech Leadiden3
FounderGiveth.io
Blockchain TeacherUniversitat Politècnica de Catalunya
Solidity Smart Contract Auditor and DeveloperFreelance
Co-FounderWhite Hat Group (WHG)
OwnermasterASP
FounderUNICLAU S.L.

Previous Work

Systems EngineerCIRSA
1999 – 2001

Education

IESE Business SchoolMaster in Business Administration (M.B.A.)
2009 – 2011
Universitat Politècnica de Catalunya (UPC)Communications Engineer, Electrònics
1991 – 1996
✎ Last updated Aug. 4, 2026