Clément Hallet
Web3 Builder at Self-employed
Paris, Ile-de-France
Summary
👤
Senior🎓
Top SchoolClément Hallet is a Paris-based Web3 builder and seasoned full‑stack engineer with 14–15 years of web development experience and an Engineer's MSc in computer science from ISEP. He blends hands‑on product work—launching projects like an OTC smart contract interface, a DAO‑driven Discord bot, and tooling to generate virtual worlds from EVM state—with leadership roles as a lead developer and systems architect. Deeply interested in blockchain, he completed specialized studies at Alyra (smart contracts, DeFi, Bitcoin/Ethereum/Stellar) and applies that expertise to freelance and self‑directed ventures. An active open‑source contributor, he enhanced logging flexibility and test coverage in the widely used Vega visualization library, demonstrating care for developer ergonomics and reliability. Practical, entrepreneurial, and tech‑curious, he moves comfortably between low‑level system concerns and user‑facing product features.
14 years of coding experience
15 years of employment as a software developer
Engineering preparatory school mathematics physics mechanics, Engineering preparatory school mathematics physics mechanics at Lycée la FayetteDecentralized finance, Decentralized finance at Alyra, l'école blockchain & IAEngineer master's degree computer science, Engineer master's degree computer science at Isep - École d'ingénieurs du numérique
English, Spanish, French
Github Skills (9)
typescript10
javascript10
visualization10
typescripts10
visualizations10
vega10
typescript-types10
testing8
d3js7
Programming languages (10)
Github contributions (5)
vega/vega
Jul 2021 - Aug 2021
A visualization grammar.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:3 reviews, 7 commits, 2 PRs in 1 month
Contributions summary:Clément focused on enhancing the logging capabilities within the Vega visualization library. Their contributions included adding explicit function types, allowing custom log handlers, and updating the log level types. They also added test cases to validate the logger's behavior. These changes improved the flexibility and usability of the Vega library's logging system.
svgcanvasgrammarvegavisualization-grammar
challet/js-stellar-sdk
Dec 2019 - Nov 2024
Main Stellar client library for the Javascript language
Contributions:2 PRs, 17 pushes, 7 branches in 4 years 11 months
language-javascriptclient-libraryjavascriptblockchainstellar
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.