Julien Demangeon
Senior Software Engineer 2 at Contentsquare
Nancy, Grand Est, France
Summary
🤩
Rockstar🎓
Top SchoolJulien Demangeon is a Senior Software Engineer with 11 years of experience building full-stack web and cloud-native systems, currently at Contentsquare after a senior role at Swile. He combines deep front-end expertise (React, TypeScript) with backend and platform work—Kafka migrations, Snowflake/Spark data pipelines, AWS infrastructure, and SRE practices—so he comfortably spans product UI to production reliability. A long-time contributor to the popular react-admin project, he improved its i18n support and shipped French/English translations, reflecting his attention to internationalization and developer ergonomics. Julien’s background includes consulting for media and enterprise clients (ARTE, Accor) and numerous freelance projects, where he emphasized test automation and performance. Curious by nature, he pursues new technologies and documents his learning through articles, blending hands-on delivery with knowledge sharing.
11 years of coding experience
12 years of employment as a software developer
Bac Scientifique Option Sciences de l'Ingénieur / Arts plastiques, Bac Scientifique Option Sciences de l'Ingénieur / Arts plastiques at Lycée Pierre Mendès France Licence I2M Internet et medias mobiles, Licence I2M Internet et medias mobiles at Universite de Lorraine
English, French
Stackoverflow
11reputation
735reached
2answers
1question
Github Skills (24)
rails-i18n10
typescript10
material-ui10
localization10
ember-i18n10
typescript-types10
i18n-js10
web-framework10
typescripts10
frontend10
js-framework10
react-admin10
react10
javascript9
admin-interface9
Programming languages (9)
Github contributions (5)
marmelab/react-admin
Jan 2017 - Sep 2020
A frontend Framework for single-page applications on top of REST/GraphQL APIs, using TypeScript, React and Material Design
Role in this project:
Front-end Developer
Front-end DeveloperContributions:10 reviews, 47 commits, 29 PRs in 3 years 8 months
Contributions summary:Julien contributed significantly to the i18n (internationalization) capabilities of the react-admin framework. Their work involved adding an `I18nProvider` and related components to handle localization. They also added French and English translations for various components, including actions, messages, and navigation elements. Furthermore, the user updated the example files to incorporate the new translation features, showcasing their integration.
on-topreactjsreact-adminbrowserjavascript
marmelab/reversi-reason
Feb 2018 - Oct 2018
:dromedary_camel: ReasonML implementation of Reversi Game
Contributions:14 commits, 10 PRs, 25 pushes in 8 months
gamereversicamelreasonmlreversi-game
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