Jan Piotrowski
Senior Product Manager at Jan Piotrowski Development Services
Berlin, Germany
Summary
🤩
Rockstar🎓
Top SchoolJan Piotrowski is a seasoned Senior Product Manager and former engineering leader with 14 years of experience building developer tools, mobile platforms, and fintech products from concept to market. Based in Berlin, he blends hands-on software engineering—contributions to high-profile open-source projects like Prisma, Capacitor, and Fastlane—with product leadership roles including Head of Engineering at Prisma and senior product roles. He has deep cross-platform and backend expertise (Node.js/TypeScript, mobile Android/iOS, Ruby) and a track record of improving developer experiences through maintenance, tooling, and documentation. As a freelance consultant since 2016 and now at Omnia, he pairs technical execution with product strategy to ship robust APIs and SDKs. A less obvious strength is his history of fixing platform-specific build and CI issues across Windows, macOS, and Linux, making him especially effective at smoothing cross-platform releases.
14 years of coding experience
9 years of employment as a software developer
Bachelor of Science Business Information Systems, Bachelor of Science Business Information Systems at Karlsruhe University of Applied Sciences
English, French, Spanish, German
Stackoverflow
10,763reputation
1.2mreached
111answers
69questions
apk
top-5%
Github Skills (75)
dependency-management10
mobile-development10
package-management10
testing10
windows10
ruby10
bundler10
javascript10
rubygems10
ionic10
wordpress-graphql10
html10
swift10
typescripts10
rust10
Programming languages (33)
Github contributions (5)
apache/cordova-windows
Jan 2018 - Jul 2022
[DEPRECATED] Apache Cordova Windows
Role in this project:
Mobile Developer
Mobile DeveloperContributions:41 commits, 58 PRs, 147 pushes in 4 years 6 months
Contributions summary:Jan primarily focused on updating and fixing tests within the Apache Cordova Windows repository. Their contributions involved modifying end-to-end tests, introducing variables to control command output, and correcting failing tests. The user also added build target overrides and fixed tests related to them. They also addressed an issue regarding the splash screen and its correct reading from the manifest.
apache-cordovawindowscordovacsharpcplusplus
prisma/orm
Jul 2019 - 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
Back-end DeveloperContributions:2 releases, 1307 reviews, 155 commits in 3 years 6 months
Contributions summary:Jan primarily contributed to the Prisma ORM, focusing on improving its functionality and expanding its capabilities. Their commits include implementing Windows support, fixing binary-related issues, and addressing problems in introspection. The user also made various fixes, including improving the error reporting prompts and enhancing the output format of introspection warnings. Moreover, they worked on improving the engine and the test suite.
cockroachdbmariadbmongodbmysqlnodejs
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