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Maxime FennerichMF

Maxime Fennerich

Web3 Crypto Backend Developer (Senior)

€550/day
17 projects
Dax, FR
8-15 years

Average response time: A few days

Freelancer profile translated to English.
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About Maxime

Web3 Developer · Full Stack Architect · EVM/TypeScript Expert

Senior developer with over 25 years of experience in web development, with the last few years primarily dedicated to the Web3 ecosystem.

After a rich career in IT consulting firms and e-commerce, I have been working independently since 2016, serving startups, scaleups, blockchain projects, and ambitious online platforms.

Since 2022, I have been dedicating 90% of my time to Web3 development, with a focus on:
- Decentralized applications (dApps) in TypeScript / Javascript / Node.js
- Ethereum / EVM smart contracts (Solidity)
- Integration with wallets, RPCs, indexers, and on-chain security issues

My expertise in software architecture, back-end, and web performance remains valuable for ensuring the robustness and scalability of projects, whether Web2 or Web3.


🧠 Key Skills

Web3 / Blockchain Development
- EVM / Solidity Smart Contracts & dApps
- Solana Programs & dApps
- Front-end & Back-end dApps: TypeScript, React, Node.js, ethers.js
- Wallet integration, minting, airdrops, tokenomics
- On-chain monitoring / automation bots
- Projects on Ethereum, Polygon, Arbitrum, Solana, Monad…

Back-End Development
- Node.js, TypeScript, PHP, Bash
- REST & GraphQL APIs
- Databases, Webhooks, Authentication

Web Architecture & DevOps
- Docker, Nginx, Apache, MySQL, MongoDB
- Performance optimization, scalability & Security

Scraping & Automation
- High-performance bots, extractors, crawlers
- Automation and mass data processing


🤝 Why work together?
- Develop a Web3 tool or dApp
- Strengthen a team in TypeScript or Solidity
- Design a modern and efficient back-end architecture
- Create custom automations or extractors

If you have a serious project — especially Web3 — with technical challenges or an architectural need, I am the right person.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • noproblemo.eu
    PHP Developer (Hopwork mission)
    DIGITAL AND IT
    May 2017 - September 2017 (4 months)
    France
    Mission:
    Futur Is Good

    Task performed:
    PHP/HTML/Javascript/CSS development on CodeIgniter framework
    NodeJS bot development
    User web interface development
    Controller and data model development

    Website:
    https://figbycentraliens.org/
    Web Development Web Architecture JavaScript Front-End Development PHP MySQL Fullstack Linux
  • Karma Solutions
    Manager, Web Architect
    DIGITAL AND IT
    October 2016 - Today (9 years and 10 months)
    Landes, France
    Services offered:
    Website creation
    Web referencing. Advice and optimizations
    Custom developments
    Technical optimizations
    HTML, PHP/MySQL, Javascript, Python
    PHP MySQL Linux JavaScript
  • Twenga
    Web Design and Development Engineer
    E-COMMERCE
    February 2008 - June 2016 (8 years and 4 months)
    Paris
    Work performed:
    Internal back-office development
    SEO tools development (crawling, data mining) + SEO traffic analysis

    Company:
    Online price comparison site. B2C qualified traffic generation platform.

    Website:
    www.twenga.fr
    PHP MySQL Linux Back-End Development

Reviews

4.8

Out of 13 ratings

AntoninA

Antonin

Marketing Electronique

Reviewed on 6/3/2019

Perfect thank you!
D

Davy

SAS TLG

Reviewed on 10/12/2017

Very good

Recommendations

Thomas MartinTM
Terence PiresTP
Thomas Martin and 1 other person have recommended Maxime

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Education

  • Google Ads Training
    JK Référencement
    2013
  • SEO (referencing) Training
    Ranking métrics
    2012

Skill set

Categories