Léo Vincent
Infrastructure Software Engineer at Polygon Labs
Toulouse, Occitania, France
Summary
🤩
Rockstar🎓
Top SchoolLéo Vincent is an infrastructure software engineer with seven years of experience building and operating blockchain-focused tooling and production platforms from Toulouse, France. Currently on Polygon’s DevTools team, he automates blockchain deployments, builds instrumentation like JSON-RPC proxies and CLIs, and leads monitoring, testing and benchmarking efforts for edge and zkEVM environments. He has strong Rust and Go back-end chops—contributing cheatcodes and tests to Foundry and improving core reth functionality—while also shipping front-end UX fixes for Kwenta’s derivatives dApp. At Renault he designed a Kubernetes operator that runs 24/7 managing 50+ GitLab runners and tens of thousands of jobs weekly, reflecting a pragmatic focus on reliability and automation. Comfortable in international open-source communities and hackathons, he blends systems-thinking with hands-on coding across infra, devtools, and dApp stacks. A former ENSEEIHT engineering student, he pairs applied-math rigor with production-grade engineering discipline.
7 years of coding experience
2 years of employment as a software developer
Engineering Degree, Applied Mathematics and Computer Sciences, Engineering Degree, Applied Mathematics and Computer Sciences at ENSEEIHT, Toulouse (France)CPGE MPSI/PSI, Mathematics, Physic and Engineering Sciences, CPGE MPSI/PSI, Mathematics, Physic and Engineering Sciences at Lycée Saint-Stanislas, Nantes (France)
French, English
Stackoverflow
13reputation
39reached
0answers
1question
Github Skills (34)
cli10
transaction10
solidity10
testing10
evm10
command-line-interface10
dapptools10
typescript10
pool10
rpc10
ethereum10
blockchain10
typescript-types10
command-line10
rust10
Programming languages (18)
Github contributions (5)
Kwenta/kwenta
Mar 2022 - Oct 2022
A dApp enabling derivatives trading
Role in this project:
Front-end Developer
Front-end DeveloperContributions:4 reviews, 9 commits, 12 PRs in 7 months
Contributions summary:Léo primarily contributed to the front-end development of the dApp, focusing on improving the user interface and user experience. Their work included enhancements to input fields, particularly related to leverage inputs in the futures trading section. They also updated the landing page elements, including the navigation and hero section, as well as the mobile theme. The user implemented accessibility improvements and fixed UI layout and color theme inconsistencies.
dappethereumblockchainweb3trading
foundry-rs/foundry
Feb 2022 - Jan 2025
Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.
Role in this project:Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:26 reviews, 19 PRs, 67 comments in 2 years 11 months
Contributions summary:Léo contributed significantly to the Foundry project, focusing on cheatcode implementation and testing. They added new cheatcodes related to deterministic random value generation and EIP-2098 compact signatures. The user also implemented and modified existing tests, including those for new cheatcodes and core functionalities within the testing framework. These contributions demonstrate a focus on enhancing the project's testing capabilities and expanding its feature set for Ethereum application development.
foundryethereumsolcsethevm
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