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Guillaume BessonGB

Guillaume Besson

CTO, Lead Full-Stack JS Developer

€1,000/day
Lyon, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Guillaume

Entrepreneur and passionate developer, I am involved in activities combining code and startups. It is the alliance of technology and created value that motivates all my work. This is why I start each of my missions by focusing on the product before the code.

🖥️ Creator of:
- DBacked: B2B service for SaaS database backup
- ChatUp: open-source project for web chat management optimized to handle over 300k simultaneous users
- YouMix: web application for mixing and broadcasting synchronized music across multiple devices

🚀 Startup
In 2016, I joined BoostInLyon, a Lyon-based associative startup accelerator, and assisted dozens of projects with their technical challenges. The "no-bullshit" vision of this community resonates with my values and is the foundation of all my activities.

🗺️ Freelance
I have collaborated as a freelance Fullstack web developer with several startups at different stages of development. My clients range from co-founders in the prototyping phase to Californian startups that have gone through YCombinator and needed to evolve a service for tens of millions of users.

⚛️ Technologies
Technological monitoring is very important to me and allows me to have a comprehensive view of current practices. My preferred stack consists of React, NodeJS, PostgreSQL, and Redis, but I regularly advise my clients on other technologies when they are more suitable.
I emphasize the developer experience by automating recurring processes (tests, deployment, etc.) and documenting my work to ensure project continuity.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Streamup
    Lead Developer
    ENTERTAINMENT AND LEISURE
    May 2015 - July 2016 (1 year and 2 months)
    Los Angeles, United States
    Streamup is a Californian startup providing a live video streaming product on the internet. During our collaboration, I scaled the text chat and video streaming (CDN) infrastructure from 1 to 23 million active users per month. Significant effort was put into cost optimization, reducing expenses by 60% between the beginning and the end of my mission. I also managed the transition of the video player from Flash to HTML5 with HLS support.
  • RoofSight
    Co-founder / Lead Developer
    ENTERTAINMENT AND LEISURE
    June 2012 - April 2014 (1 year and 11 months)
    Lyon, France
    Front-end development of Chaze's web application using Backbone.js and then Angular.js in a second version. Jack-of-all-trades in our startup, I handle system administration and delve into everything else.
  • Adagio
    Lead FullStack Web Developer
    PRESS AND MEDIA
    October 2016 - October 2017 (1 year and 1 month)
    Lyon, France
    Creation and maintenance of the OnfocusIQ product for managing and visualizing data related to our clients' websites. IQ provides access to data concerning the advertising performance of each ad placement on all our clients' sites.
    Design and development of the client-side script for collecting browsing and ad visibility data. This script is loaded over 50 million times per month and manages the display of ad placements on all these sites.
    Advertising Google Tag Manager

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Education

  • Expert in Information Technology
    EPITECH
    2016

Skill set

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