Stefan George
Co-Founder And CTO at Gnosis Limited
Lisbon, Lisbon, Portugal
Summary
🤩
Rockstar🎓
Top SchoolStefan George is a seasoned founder and CTO with 12 years of experience building secure, production-grade blockchain infrastructure from Lisbon. As Co-Founder and CTO at Gnosis (after leading as CTO within ConsenSys), he blends product leadership with deep technical ownership of smart contract systems and developer tooling. His open-source contributions to high-profile Ethereum projects like pyethereum and Gnosis Safe show hands-on expertise in Solidity, compiler integration, testing, and security-focused contract design. He pairs an academic foundation from Universität Potsdam and Hasso Plattner Institut with practical startup execution, shipping audited contract features and unit-tested crypto primitives. Known for improving Solidity support in core tooling, he brings a rare combination of low-level protocol understanding and pragmatic engineering management.
12 years of coding experience
2 years of employment as a software developer
Bachelor of Science, IT-Systems Engineering, Bachelor of Science, IT-Systems Engineering at Universität PotsdamMaster, IT-Systems Engineering, Master, IT-Systems Engineering at Hasso Plattner Institut
German, English
Stackoverflow
11reputation
212reached
0answers
1question
Github Skills (11)
smart-contracts10
solidity10
python10
ethereum10
blockchain10
pytest9
testing9
security9
regex6
django6
urlpattern6
Programming languages (8)
Github contributions (5)
safe-global/safe-smart-account
Sep 2017 - Mar 2018
Safe allows secure management of blockchain assets.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:114 commits, 5 PRs, 66 pushes in 5 months
Contributions summary:Stefan's contributions primarily focused on implementing and testing core smart contract functionality within the Ethereum blockchain environment. They added unit tests for the GnosisSafe smart contract, demonstrating an understanding of Solidity and testing frameworks. The user's work involved modifying the GnosisSafe contract, its associated factory contracts, and implementing security-related features through new exception contracts. Their contributions also extended to the integration of new condition and exception types to the GnosisSafe contracts.
secureethereumgnosis-safeblockchainwallet
ethereum/pyethereum
Nov 2015 - Apr 2016
Next generation cryptocurrency network
Role in this project:Back-end Developer
Back-end DeveloperContributions:7 commits, 3 PRs, 6 comments in 5 months
Contributions summary:Stefan primarily contributed to the `pyethereum` repository by adding and modifying Solidity support features. Their commits include adding library support, compiler version checks, and modifying existing solidity wrapper functionality. The user's work involved changes to core files like `_solidity.py` and `tester.py`, indicating a focus on enhancing the Solidity compilation and testing capabilities within the project.
next-generationblockchaincryptocryptocurrencybitcoin
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