Théo.

Hello, i’m Théo :)
I’m a Lead Front-End Developer with over 10 years of experiences

based in Paris and currently at PMU. I was previously at Welcome to the jungle, Leboncoin and Canalplus. I bring a deep passion for crafting engaging web and mobile interfaces and enhancing user experiences with ReactJS, React Native and Typescript.

Théo Mesnil

I lived all my childhood in Guadeloupe 🏝 I’ve studied at Supinfo, first 2 years in Guadeloupe then last 3 years in Montréal. Then i moved to Paris to start my final study internship. I also love play games: Age of Empire, Stardew Valley, MSFS...

Check my resume
Experiences
PMU
Feb 2026 / Now (1m)
Lead Front-End Developer
Feb 2026 / Now (1m)
React NativeTypescript
Welcome to the jungle
May 2019 / Feb 2026 (6y 10m)
Senior Front-End Developer
Jan 2021 / Now (5y 3m)
  • Tech owner on mission team: lead epics and engage discussions with the PM and designer for all development team associates
  • Create with pride our design system welcome-ui.com and serve on the welcome-ui committee
  • Facilitate front chapter meetings
  • Contribute to continuous integration efforts and facilitate upgrades across common libraries
ReactJSTypescriptStyled componentNextJSCircleCIFigma
Confirmed Front-End Developer
May 2019 / Jan 2021 (1y 9m)
Leboncoin
Aug 2017 / Apr 2019 (1y 9m)
Front-End Developer
  • Transitioned a legacy app to a ReactJS platform on the deposit funnel, the ad page, and a holiday bookings funnel
  • Proof of concept for a design system
ReactJSReduxStyled componentSketch
Canalplus
Apr 2013 / Jul 2017 (4y 4m)
Front-End Developer - Interfaces & Experiences
Jan 2015 / Jul 2017 (2y 7m)
  • Migrated myCanal platform to ReactJS
  • Created C8 & CSTAR replay platform
  • Crafted websites for special TV operations
ReactJSAngularSCSS
Web Developer & Designer at Canalplay
Oct 2013 / Dec 2014 (1y 3m)
Internship - Assistant Project Manager
Apr 2013 / Sept 2014 (1y 6m)