Jérémy Magrin
Développeur React Native
Paris, Ile-de-France
Summary
🤩
Rockstar🎓
Top SchoolJérémy Magrin is a seasoned React Native and full‑stack developer with a decade of experience and a proven track record as CTO and technical lead on mobile-first products. He specializes in building high-performance React/React Native apps and Nest.js backends, having shipped consumer apps with 100k monthly users and contributed stability and auth fixes to the open-source CRM Twenty. A certified mentor and trainer in React Native since its early days, he couples pragmatic TDD/CI practices with a strong UI/UX and accessibility focus. Rated 5/5 across freelance platforms for over 80 missions, he’s known for rapid responsiveness (under an hour) and offering a free 30-minute audit call to align on pragmatic MVPs. Based in Paris, he blends hands-on engineering with architecture and team coaching, often stepping into CTO duties to drive product and technical strategy.
10 years of coding experience
12 years of employment as a software developer
EpitechComputer Science Computer Science English, Computer Science Computer Science English at California State University San Marcos
English, French
Stackoverflow
1,212reputation
131kreached
10answers
3questions
react-native
top-5%
Github Skills (24)
back-end-development10
typescript10
nestjs10
typescript-types10
typescripts10
react-native9
prisma9
authentication9
wpgraphql9
user-authentication9
wordpress-graphql9
graphql9
apidoc8
api8
javascript8
Programming languages (13)
Github contributions (5)
twentyhq/twenty
Jun 2023 - Mar 2025
Building a modern alternative to Salesforce, powered by the community.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:471 reviews, 288 PRs, 854 pushes in 1 year 9 months
Contributions summary:Jérémy focused on refactoring the NestJS modules, fixing authentication issues, and implementing improvements to the comment functionality. They also contributed to various bug fixes, including excessive stack depth issues and authorization problems, indicating a focus on stability and maintainability. Moreover, they added new features, like implementing a login using email and password and adding feature flag for controlling code execution.
crmcrm-systemgood-first-issuegraphqljavascript
magrinj/react-native-swipeable-view
Apr 2017 - Oct 2017
Contributions:5 releases, 24 commits, 1 PR in 6 months
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