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 (74)
dependency-management10
mobile-development10
package-management10
testing10
windows10
ruby10
bundler10
javascript10
rubygems10
ionic10
wordpress-graphql10
html10
swift10
typescripts10
rust10
Programming languages (32)
Github contributions (5)
apache/cordova-windows
Jan 2018 - Jul 2022
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.
objective-cwindowscordovaapache-cordovajavascript
fastlane/fastlane
Aug 2017 - Sep 2020
🚀 The easiest way to automate building and releasing your iOS and Android apps
Role in this project:Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:381 commits, 545 PRs, 1166 pushes in 3 years 1 month
Contributions summary:Jan primarily contributed to the `fastlane` project, a tool designed to automate iOS and Android app builds and releases, by addressing various issues in the codebase. Their work included modifying Ruby files to update categories, clarify descriptions, and enhance error messages, particularly within the context of the HockeyApp integration. They also made documentation fixes, added examples for action usage, and improved platform compatibility for testing across different operating systems.
fastlaneandroid-appsappsdeploymentreact-native
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