Joël Matelli
Technical Lead at Yaarz
Paris, Ile-de-France
Summary
👤
Senior🎓
Top SchoolJoël Matelli is a Technical Lead and senior frontend engineer based in Paris with 13 years of experience building polished, accessible web interfaces using TypeScript, React, React Native and modern CSS. He specializes in conceiving and evolving design systems—having led migrations to tokenized systems, documented components in Storybook, and kept libraries aligned with designer patterns at organizations like BNP Paribas and SNCF. Comfortable across the stack, he has paired frontend work with backend touches in Go and driven architecture shifts (HOC → hooks, JS → TS) to improve maintainability and testability. Joël is passionate about accessibility and performance, recently focusing on making interactive experiences (e.g., story-style viewers) both visually coherent and inclusive. He prefers freelance engagements over permanent roles, bringing a pragmatic blend of technical leadership and hands-on delivery to client missions. An engineer who values craft, he often starts components in Storybook to iterate design and behavior before full integration.
13 years of coding experience
13 years of employment as a software developer
BSc Degree, Web conception and development, BSc Degree, Web conception and development at University of Aix-Marseille II
French, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (34)
parking6
online-game5
meter5
mixins4
css4
react4
api3
styles3
multiplayer-game3
directive3
html-element3
elm2
garden2
color-scheme2
mvc2
Programming languages (5)
Github contributions (5)
tellijo/horofree
Oct 2016 - Nov 2016
Contributions:23 commits, 29 PRs, 47 pushes in 7 days
reactfreelancersmeterparking
jmatelli/dotfiles
Jan 2017 - Jun 2024
MacOS dotfiles
Contributions:34 PRs, 34 pushes, 19 branches in 7 years 5 months
karabinermutttmuxlinuxasdf
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