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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 of:

  • 🎶 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. soundsync Public

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

    C 619 25

  2. Freader Public

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

    JavaScript 252 29

  3. Node.js-Chat Public archive

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

    CSS 175 144

  4. ChatUp Public

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

    JavaScript 60 17

  5. The best way to backup and restore your database

    TypeScript 84 8

775 contributions in the last year

Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Mon Wed Fri

Contribution activity

July 2022

8 contributions in private repositories Jul 1 – Jul 5

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