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Hi! I'm Guillaume 👋

I'm a french developer who love building stuff to help people with their everyday life. When I'm not working on my latest personnal project, I help companies build awesome products through my freelance business. I work mainly with small to medium sized startups and focus on being highly efficient in my code, my communication and most importantly my understanding of the product.

Some projects I'm proud about:

  • 🎶 Soundsync: I'm currently working on this Soundsync is an open-source alternative to Sonos to broadcast music in your home on multiple speakers at the same time. It is compatible with a lot of different speakers and audio source.
  • 💬 ChatUp: I built a highly scalable web chat system for a YC startup that is now open-sourced. It handles +250k concurrent users and is customizable with plugins while being highly optimized to reduce server costs.
  • 💾 DBacked: My first SaaS that earned me a dollar! DBacked creates, encrypts and stores SQL database backups and makes sure that you'll never lose one bit of your company data.

Have a suggestion about one of my project, need a freelance to help building your tech product or just want to talk? Send me an email! 😃


  1. Virtual cables between any audio source and any speaker in your home

    C 204 9

  2. A small yet powerful RSS Feed Reader working with Node.js and Angular

    JavaScript 256 29

  3. A good-looking Node.js + chat application, built with Bootstrap and other beautiful libs. Totally commented.

    CSS 175 143

  4. Highly performant, Scalable, Fault-Tolerant Chat platform in NodeJS

    JavaScript 60 16

  5. The best way to backup and restore your database

    TypeScript 80 5

  6. A little experiment with typography, SVG and CSS Transitions

    JavaScript 9 1

1,655 contributions in the last year

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Activity overview

Contribution activity

July 2020

2 contributions in private repositories Jul 5

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