Amaury A
Senior Software Engineer Cosmos Core Dev at Regen Network
Paris, Ile-de-France
Summary
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RockstarAmaury A is a Senior Software Engineer and Cosmos core developer based in Paris with 11 years of experience building and modernizing blockchain and full‑stack systems. He has deep hands‑on expertise in core blockchain projects—contributing to Polkadot/Parity and the Cosmos SDK—where he focuses on refactors, gRPC/protobuf integrations, encoding fixes, and deterministic RPC endpoints. Comfortable across the stack, he modernizes JavaScript codebases into TypeScript, improves developer experience with tests and examples, and implements backend services in Rust when performance and correctness matter. His work blends protocol‑level robustness (compact encoding, BigNumber/hex handling) with practical UX and tooling improvements like Electron menubars and MetaMask login flows. Known for cleaning up legacy systems and shipping reliable APIs, he brings a pragmatic engineering mindset informed by both core protocol concerns and developer ergonomics.
11 years of coding experience
4 years of employment as a software developer
Github Skills (41)
crypto10
hex10
cosmos-sdk10
substrate10
javascript10
utilities10
back-end-development10
electron10
testing10
typescript10
email-validation10
metamask10
polkadot-js10
go10
api10
Programming languages (18)
Github contributions (5)
amaury1093/login-with-metamask
Mar 2018 - Dec 2021
Demo project for "One-click Login with Blockchain: A MetaMask Tutorial"
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:2 reviews, 49 commits, 86 PRs in 3 years 9 months
Contributions summary:Amaury primarily focused on transforming the codebase to TypeScript, indicating a shift towards modern JavaScript development practices. They made significant changes to both the backend and frontend components, including refactoring authentication logic, user profile management, and updating web3 integration. The user also addressed database-related issues and ensured the overall login flow was functional.
cryptographyone-clickinfurablockchaindemo-project
reacherhq/check-if-email-exists
Aug 2018 - Jan 2023
Check if an email address exists without sending any email, written in Rust. Comes with a ⚙️ HTTP backend.
Role in this project:Back-end Developer
Back-end DeveloperContributions:34 releases, 54 reviews, 326 commits in 4 years 5 months
Contributions summary:Amaury focused on developing the back-end functionality of the email verification service. Their work included implementing the core logic in Rust to check if an email address exists without sending an email, alongside building an HTTP back-end to expose this functionality. They also added logging, email validity checks, and incorporated MX record lookups to improve the service's reliability.
smtprustemailaddressemail-verification
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