George Kadianakis
Company Owner at Energopoiiseis OE
Heraklion, Region of Crete, Greece
Summary
🤩
Rockstar🎓
Top SchoolGeorge Kadianakis is a materials science–trained entrepreneur with 26 years of hands-on experience combining agricultural production, quality control, and applied laboratory research while running his own advisory company in Crete. He blends practical farm-level expertise—olive oil, prickly pear and tsikoudia production—with rigorous technical skills from roles in quality control and government chemistry labs. Unexpectedly for an agricultural entrepreneur, he is also an active contributor to high-profile open-source cryptography and privacy projects (notably Tor and Ethereum consensus specs), where he worked on low-level security, key/certificate handling, Curve25519 authentication and KZG proof testing. This mix of field-level production, laboratory discipline, and deep back-end security engineering gives him a rare cross-disciplinary perspective on trustworthy systems and supply-chain integrity. Based in Heraklion, he leverages local agricultural knowledge and global open-source security expertise to advise on resilient, standards-driven material and agricultural processes.
26 years of coding experience
15.7, General Studies, 15.7, General Studies at 5o E.L.H6,03, Materials Science, 6,03, Materials Science at University of crete
Github Skills (20)
unit-testing10
python10
c-programming10
ethereum10
openssl10
cryptography10
blockchain10
network-security10
cprogramming-language10
consensus9
dft9
authentication9
algorithm9
networking9
net9
Programming languages (16)
Github contributions (5)
torproject/tor
Mar 2012 - Jul 2021
unofficial git repo -- report bugs/issues/pull requests on https://gitlab.torproject.org/ --
Role in this project:
Back-end Developer & Security Engineer
Back-end Developer & Security EngineerContributions:2 reviews, 945 commits, 189 PRs in 9 years 5 months
Contributions summary:George focused on implementing and fixing features related to the Tor network's underlying security, specifically in the area of handling key and certificate verification, as well as authentication for clients on the control port. Their work involved adding code to parse and validate certificate and key material, including implementing new authentication schemes using curve25519 and integrating with the existing code base. They also worked on low-level code, touching upon networking and the inner workings of Tor's handshake protocol.
ctorrustrust-lang
ethereum/consensus-specs
Oct 2021 - Jan 2023
Ethereum Consensus Specifications
Role in this project:Back-end Developer & Cryptography Engineer
Back-end Developer & Cryptography EngineerContributions:199 reviews, 34 commits, 72 PRs in 1 year 3 months
Contributions summary:George's contributions primarily revolve around implementing and testing features related to EIP-4844, specifically within the context of Ethereum consensus specifications. They were involved in making the specification executable by implementing necessary "glue code" and a dummy KZG trusted setup. Furthermore, they introduced and refined unit tests for KZG proof verification and blob sidecar validation, ensuring the integrity of data commitments. Key contributions include updating the cryptography API and handling barycentric evaluations.
consensusethereum
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