Joël Galeran
TypeScript Engineer at Prisma
Berlin Metropolitan Area Germany
Summary
🤩
Rockstar🎓
Top SchoolJoël Galeran is a TypeScript engineer with 12 years of experience, currently building type-safe database tooling at Prisma in the Berlin area. He brings deep back-end and database expertise—contributing to core Prisma engines, the Prisma Client, and performance instrumentation—alongside practical full-stack experience from multiple startups and a co-founded font tooling company. Joël is an active open-source contributor with notable fixes and features in widely used projects like prisma/prisma and opentype.js, demonstrating attention to correctness in both ORM internals and font metrics. Outside of code he’s an avid traveler, cyclist and meditator, a combination that informs a thoughtful, steady approach to complex engineering problems.
12 years of coding experience
7 years of employment as a software developer
Bachelor's Degree, Web / Multimedia, Chef de Projet Multimédia spécialité Développement Web, Bachelor's Degree, Web / Multimedia, Chef de Projet Multimédia spécialité Développement Web at IESA Multimédia
French, English
Stackoverflow
1,675reputation
278kreached
28answers
3questions
Github Skills (37)
javascript10
opentype10
fonts10
seo10
postgresql10
data-modeling10
typescript10
glyph10
wpgraphql10
prisma10
orm10
glyph-icons10
sql10
wordpress-graphql10
database-design10
Programming languages (29)
Github contributions (5)
opentypejs/opentype.js
Nov 2015 - Oct 2021
Read and write OpenType fonts using JavaScript.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:12 releases, 10 reviews, 104 commits in 6 years
Contributions summary:Joël appears to be a back-end developer, focused on improving the functionality of the opentype.js library. They have primarily addressed a bug in the `glyph.getMetrics()` function, ensuring it returns accurate values for glyph metrics. Furthermore, they added support for reading and writing the meta table.
glyphsotfkerningjavascriptfont
prisma/prisma
Jan 2020 - Jan 2023
Next-generation ORM for Node.js & TypeScript | PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB and CockroachDB
Role in this project:Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:47 releases, 3097 reviews, 1538 commits in 3 years 1 month
Contributions summary:Joël's commits primarily involve enhancements and bug fixes related to the Prisma ORM for Node.js and TypeScript. Their contributions include updating tests for the client, implementing engine-core features, and refining documentation links. The user demonstrates skills in database interactions, including handling of various database functionalities, specifically with the query language and its implementation, which are further solidified by changes related to specific providers like PostgreSQL. They have also worked on changes related to the internal workings of the engine.
sqlserverunit-of-workormmongodbsql-server
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