Grégory Houllier
Staff Software Engineer at RennesJS
Rennes, Brittany, France
Summary
🤩
Rockstar🎓
Top SchoolGrégory Houllier is a Staff Software Engineer based in Rennes with 12 years of experience building web-first products and teams across startups and scale-ups. A co-founder of the RennesJS user group, he blends deep front-end expertise in JavaScript/TypeScript and frameworks like Angular and React with systems-level interest in Rust and Node. He has progressed from hands-on front-end roles and training to lead and staff engineering positions at companies such as Swile, Follow and Contentsquare, driving architecture and delivery. Known for mentoring developer communities and running local meetups, he combines technical leadership with grassroots developer advocacy. Pragmatic and curious, he often bridges product and engineering to transform UX-focused needs into robust, maintainable implementations.
12 years of coding experience
8 years of employment as a software developer
Master en informatique (MIAGE), Master en informatique (MIAGE) at Université de Rennes I
English
Stackoverflow
11reputation
845reached
1answer
0questions
Github Skills (200)
trunk10
npm-package10
bundler10
transpiler10
future10
jsx10
node-canvas10
service-worker10
data-storage10
cometd10
template-literal-types10
angularjs10
nodejs10
package-manager10
mongodb10
Programming languages (12)
Github contributions (5)
ghoullier/number-safe-parse
Mar 2024 - Apr 2025
Contributions:127 reviews, 146 PRs, 148 pushes in 1 year
ghoullier/blog
Jun 2022 - Jul 2024
Contributions:22 PRs, 34 pushes, 18 branches in 2 years
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