Phillip Thelen
Lead Mobile Developer at HabitRPG
Cologne, North Rhine-Westphalia, Germany
Summary
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RockstarPhillip Thelen is a Lead Mobile Developer based in Cologne with 15 years of experience building cross-platform mobile apps and contributing to web and backend systems. He combines hands-on mobile work (iOS and Android) with full-stack contributions—examples include enhancing Habitica’s Android client and improving the Seafile web interface with media preview and admin tooling. As a long-term open-source contributor he has improved UI components (CRToast), API docs and server logic, and implemented practical UX fixes and animation stability. He splits time between leading mobile development at HabitRPG and self-employed consultancy, bringing both product-focused leadership and deep implementation skills. Notably, his background includes research-institute software roles, reflecting an ability to translate complex requirements into reliable, user-facing features.
15 years of coding experience
2 years of employment as a software developer
English, German
Github Skills (36)
kotlin10
javascript10
ios10
coffeescript10
animation10
apidoc10
ui-design10
java10
javas10
uid10
api10
front-end-development10
android10
swift10
kotlin-android10
Programming languages (17)
Github contributions (5)
HabitRPG/habitica-android
Jun 2015 - Jan 2023
Native Android app for Habitica
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:22 releases, 20 reviews, 3044 commits in 7 years 8 months
Contributions summary:Phillip primarily worked on implementing and improving the native Android app for Habitica. Their commits focused on fixing bugs related to UI elements and improving the visual presentation of features such as the shop and the avatar stats widget. They also made enhancements to the task list and other UI aspects of the app.
android-studiowearoscoroutinesandroidandroid-app
HabitRPG/habitica
May 2014 - Jan 2023
A habit tracker app which treats your goals like a Role Playing Game.
Role in this project:Back-end Developer
Back-end DeveloperContributions:18 reviews, 180 commits, 135 PRs in 8 years 9 months
Contributions summary:Phillip primarily contributed to the back-end functionality of the Habitica application, with a focus on API documentation and improvements. Their work included updating API parameter documentation for the Equip call, resolving quest scroll refund logic, and refactoring code by removing callbacks from user updates. Additionally, the user corrected API documentation for multiple endpoints, implemented item ownership checks before equipping gear, and documented data about temporary variables for tasks.
trackerexpressvuereactjsrole
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