Johan Preynat
Senior Software Engineer at GitBook
Marseille, Provence-Alpes-Côte d'Azur, France
Summary
🤩
Rockstar🎓
Top SchoolJohan Preynat is a Senior Software Engineer with 11 years of experience, currently shaping developer-focused products at GitBook where he was an early founding engineer. He combines front-end finesse—refactoring themes and improving search UX—with backend and QA expertise, contributing fixes and tests to high-profile open-source projects like Firebase Tools and HonKit. Comfortable across the stack, he has improved emulators, storage APIs and robust test suites while also tackling navigation and styling challenges in documentation tooling. Based in Marseille, his background in mechanical engineering and modern music hints at a pragmatic, multidisciplinary approach to problem solving and UX-sensitive engineering.
11 years of coding experience
2 years of employment as a software developer
Musical Studies Degree, Modern Music, Musical Studies Degree, Modern Music at Ecole Nationale de MusiqueMaster of Science (MSc), Mechanical Engineering, Master of Science (MSc), Mechanical Engineering at Ecole nationale d'Ingénieurs de Saint-Etienne
English, Spanish, French
Stackoverflow
950reputation
47kreached
26answers
0questions
youtube
top-5%
Github Skills (24)
javascript10
jquery10
testing10
css10
html10
theme-development10
youtube9
plugin-development9
nodejs9
lessc8
typescripts8
markdown-it8
docbook8
typescript-types8
typescript8
Programming languages (11)
Github contributions (5)
GitbookIO/theme-default
Apr 2016 - Sep 2016
Default theme for GitBook
Role in this project:
Front-end Developer
Front-end DeveloperContributions:55 commits, 11 PRs, 21 pushes in 5 months
Contributions summary:Johan primarily focused on enhancing the front-end aspects of the GitBook theme. Their contributions involved refactoring dependencies, splitting code into core and theme components, and updating the website layout for improved search functionality and user experience. They also addressed various styling and navigation issues, ensuring a more polished and functional theme.
gitbookdefault-theme
firebase/firebase-tools
Jul 2017 - May 2021
The Firebase Command Line Tools
Role in this project:Back-end Developer & QA Engineer
Back-end Developer & QA EngineerContributions:6 reviews, 6 commits, 7 PRs in 3 years 10 months
Contributions summary:Johan primarily focused on improving the Firebase tools by addressing bugs and enhancing the storage emulator. Their contributions include fixing issues with the file.delete() and file.download() APIs within the storage emulator and ensuring data integrity. Furthermore, the user enhanced the auth:export command to ensure proper data handling and implemented test cases within the project. They demonstrated expertise in JavaScrip and interacting with Google Cloud API.
firebasecommand-line-toolscli
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