Hadrien Charlanes
Founder at sismo-core
Everywhere, United States
Summary
🤩
Rockstar
Top expert inEthereum Blockchain Development and Security
Hadrien Charlanes is a founder and backend-focused engineer with eight years of experience building decentralized systems and cryptographic primitives, particularly around Ethereum. He led development of core smart contracts for Sismo’s badge minting protocol and contributed robust fixes and testing to soulbound attesters, demonstrating deep on-chain engineering and security awareness. His work on deployment tooling and asset onboarding for Aave Protocol V2 shows practical expertise in infra automation and production-ready Ethereum integrations. Comfortable working remotely from anywhere in the U.S., he blends startup vision with hands-on contract development and deployment. Notably, he combines protocol design instincts with careful end-to-end testing—an uncommon mix that reduces risk when launching crypto-native features.
8 years of coding experience
Github Skills (9)
smart-contracts10
deploying10
solidity10
ethereum10
hardhat10
zkp9
testing8
githubaction-workflow7
github-ci7
Programming languages (6)
Github contributions (5)
sismo-core/sismo-badges
Jun 2022 - Jan 2023
Contracts of the Sismo Badge Minting Protocol
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 releases, 27 reviews, 39 commits in 6 months
Contributions summary:Hadrien primarily contributed to the smart contracts of the Sismo Badge Minting Protocol, implementing and refactoring core functionalities. They added return types to functions in `Front.sol`, updated `buildAttestations` functions to view functions and added new features such as batch build and generate attestations. The user also fixed encoding issues in the soulbound attester and improved end-to-end testing.
attestationssismodidzkpethereum
aave/protocol-v2
Dec 2020 - Jul 2021
Aave Protocol V2
Role in this project:Back-end Developer
Back-end DeveloperContributions:6 reviews, 197 commits, 38 PRs in 6 months
Contributions summary:Hadrien's commits primarily revolve around deploying new assets within the Aave Protocol V2. The user implemented a task to deploy a new asset, which included modifying hardhat configurations and helper files. Further contributions included fixes to the deployment script and updating the WETH gateway contract. This indicates the user's focus is on backend infrastructure and deployment-related tasks.
ethereumblockchainweb3aave-protocolaave
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