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Antoine EstienneAE

Antoine Estienne

Blockchain Tech Lead (Ethereum Specialist)

€900/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Antoine

I help you design, develop, and audit your Web3 products – whether it's smart contracts, decentralized architectures, or custom blockchain integrations. With over 9 years of experience in Solidity, TypeScript, and Node.js, I work on all layers of a project: technical design, full-stack development, multi-chain deployment, and security.

I have supported startups and scale-ups (ConsenSys, Moonbeam, Polygon) in launching decentralized applications, compliant tokens, and on-chain identity systems.

My approach: clean, documented, and auditable code, to deliver quickly and effectively – without sacrificing reliability.

Project types:
- Smart contract development and audit (ERC20/721/1155, DAO, attestations, etc.)
- Web3 architecture design (API, dApps, dashboards, multi-service backends)
- On-chain protocol integration (KYC/DID, DeFi, asset tokenization)
- Technical consulting and strategic blockchain guidance
  • English

    Native or bilingual

  • German

    Conversational

  • French

    Native or bilingual

Can work on-site
Paris (up to 50km)

Experience

  • Compilot,
    Lead Blockchain Engineer
    June 2023 - Today (3 years and 2 months)
    Paris, France
    • Leveraged Polygon's DID stack to emit and verify ZK-Proof based identity on and off-chain
    • Wrote and deployed on Mainnet (7 different chains) audited Smart Contracts to gate on-chain access based on emitted signatures (used by 40 production smart contracts)
    • Implemented and maintained NodeJs multi-service API used by 25 000 end users
    • Collaborated with Front End team to build a dashboard (used by 200 projects) and a KYC widget (5000 on-boardings)
  • Dowgo
    Independent Consulting
    March 2022 - April 2023 (1 year and 1 month)
    Paris, France
    • Designed and built in Solidity the Dowgo permissioned ERC20 Contracts linked to an off-chain ETF
    • Built React Web App to interact with Dowgo ERC20 Smart Contracts
    • Built and deployed Serverless infrastructure with AWS to manage blockchain/trading bridge
  • Under the radar for now
    Blockchain Architect Consultant
    TECH
    March 2022 - Today (4 years and 5 months)
    Paris, France
    Architecture and conception ofAlpha and Beta products:
    - Smart Contracts (Solidity)
    - Serverless AWS scripts (Typescript)
    - Front End for the DApp (React.js)
    Solidity React.js Typescript Serverless DynamoDB

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Education

  • Civil Engineer from Mines Paris (Master)
    Mines ParisTech
    2016
    Formation ingénieur general Mines ParisTech: - Energie - Programmation - Gestion - Physique - Analyse

Skill set (16)

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