Emmanuel De Bellefon
Senior Software Engineer at Graneet
Paris, Ile-de-France
Summary
👤
Senior🎓
Top SchoolEmmanuel De Bellefon is a senior software engineer and technical leader based in Paris with eight years of experience building complex web applications and leading engineering teams in startups and scale-ups. He has been the technical referent for 25+ engineers, driving large optimizations, data migrations, and architecture transitions that measurably improved reliability and saved hundreds of hours. Deeply proficient in SQL performance and Postgres internals, he also designs pixel-perfect React design systems and has shipped Notion-like editors and Figma-like design tools from scratch, including UX and product design. Known as an efficient worker and fast learner, he combines hexagonal architecture and clean-code practices to deliver fast, maintainable systems. He pairs a strong user-centered mindset with hands-on implementation—often turning complex domain discovery into production-grade, highly accurate algorithms. Fluent at bridging product, design, and engineering, he routinely enables fundraising and operational wins through technical leadership.
8 years of coding experience
4 years of employment as a software developer
Diplôme d'ingénieur Informatique, Diplôme d'ingénieur Informatique at EPITA: Ecole d'Ingénieurs en Informatique
French, English, German
Stackoverflow
2,529reputation
906kreached
101answers
5questions
typescript
top-5%
react-hooks
top-5%
javascript
top-5%
Github Skills (182)
zero-configuration10
storybook10
ui-components10
testing10
websocket10
form-validation10
declarative10
isolation10
javascript10
django10
npm-scripts10
socket10
api10
rest10
html10
Programming languages (6)
Github contributions (5)
Exifers/Libtree
Feb 2018 - Mar 2018
Contributions:118 commits, 34 pushes, 1 branch in 1 month
AArzop/CyberStoriesWeb
Feb 2019 - Dec 2019
Contributions:96 pushes, 6 branches in 9 months
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