Freelancer profile translated to English.

Description

Senior full-stack developer with 15+ years of experience, specializing in the modern JavaScript/TypeScript ecosystem (React, Node.js, Next.js) and expert in Web3/DeFi.

Former Tech Lead at Stakelab (Cosmos & Berachain ecosystem), I designed and delivered:

— a multi-validator staking platform,

— a custom RPC service like Alchemy for Berachain,

— a DEX (Uniswap v3 fork) with Arrakis vaults and Ponder.sh indexing.

I now undertake freelance missions for:

• Full-stack React/Node development — MVPs, new features, architecture redesign

• Web3/DeFi — smart contracts, on-chain integrations, Wagmi/Viem frontends, indexing

• Automation & AI integrations — N8N workflows, Claude agents, RAG pipelines

• Tech Lead / architecture — technical scoping, stack choices, team mentoring

Main Stack: TypeScript, React, Next.js, Node.js, PostgreSQL, Docker, Solidity, Wagmi, Ponder.sh, N8N, Claude API.

I work remotely, on a time & materials or fixed-price basis, for missions ranging from a few days to several months. Available to start quickly.

Industry field of expertise

Languages

French
Native or bilingual
English
Fluent

Workplace preferences

Remote only

Primarily works remotely

Stakelab
Tech lead
January 2023 - Today (3 years and 7 months)
Responsible for the technical development and architecture of Web3 products within the Cosmos and Berachain ecosystems.
Key achievements:
• Design and development of a staking platform for company validators on the Cosmos ecosystem (delegation interface, reward tracking, multi-validator dashboard).
• Architecture and deployment of a custom RPC service like Alchemy for Berachain: public and private endpoints, monitoring, rate-limiting management.
• Contribution to the development of a DEX on Berachain (Uniswap v3 fork with Arrakis-type concentrated vaults), including on-chain indexing via Ponder.sh and the React/Wagmi frontend.
• Technical supervision and code review, stack choices, definition of development standards.
Stack: TypeScript, React, Next.js, Node.js, Wagmi/Viem, Solidity, Ponder.sh, PostgreSQL, Docker, Cosmos SDK.
Skalv Studio
Self-employed
March 2016 - January 2023 (6 years and 10 months)
Various web and Web3 development missions for startups, SMEs, and training organizations.
Web & Web3 Development:
• Full-stack React / Node / PHP projects for various clients (MVPs, business applications, e-commerce sites).
• Several crypto projects: NFT collections, on-chain lotteries, Web3 marketplaces, wallet and smart contract integrations.
Training & Mentoring:
• Web development trainer for CCI and OpenClassrooms: supporting students from beginner to professional placement.
Entrepreneurship:
• Co-founder of a coworking space (technical and operational management).
• Launch of a home automation startup: product strategy and technical direction.
Main Stack: JavaScript, TypeScript, React, Node.js, PHP, Solidity, Ethers.js, PostgreSQL, MySQL.
Kayo
Front and back developer
TECH
January 2014 - January 2016 (2 years)
Rouen, France
Maintenance and improvement of a document dematerialization software for the events industry.
Backend on Symfony and frontend on BackboneJS.
Symfony 1.4 Backbone.js DevOps