Piotr Leja
Android Developer at Peloton Interactive
New York, New York, United States
Summary
👤
Senior🎓
Top SchoolPiotr Leja is a seasoned Android developer based in New York with nine years of hands-on experience building consumer and enterprise mobile apps for companies like Peloton and clients such as SurveyMonkey and the American Museum of Natural History. He specializes in Java/Kotlin Android development, performance and UI optimization, and backend integrations using MySQL and Ruby on Rails, often tackling large datasets and custom view performance challenges. Piotr has architected cross-platform solutions and contributed to open-source projects for clients, demonstrating an ability to move between native Android, Kotlin Multiplatform, and Xamarin when projects demand it. He prefers startup-style, results-driven environments where engineering autonomy fuels innovation rather than corporate process. Colleagues rely on him for pragmatic architecture and efficient, production-ready code that balances user experience with backend constraints. Outside of work he keeps a light touch on his GitHub—“just an Android”—but his resume reflects deep, production-focused mobile engineering.
10 years of coding experience
6 years of employment as a software developer
Bachelor of Arts; 2011, Computer Science, Bachelor of Arts; 2011, Computer Science at Hunter College, CUNY
English, Polish
Stackoverflow
3reputation
49reached
0answers
1question
Github Skills (13)
mobile-application10
kotlin10
multimodule10
rxkotlin10
ratingbar10
kotlin-android10
android9
android-app8
android-apps7
open-source7
dplyr6
ggplot6
r6
Programming languages (2)
Github contributions (3)
ml-opensource/RatingBar
Jul 2016 - Jan 2018
A customizable rating bar
Contributions:3 releases, 10 commits, 13 PRs in 1 year 6 months
ratingbar
art-institute-of-chicago/aic-mobile-android
Jul 2018 - Sep 2018
Art Institute of Chicago Official Mobile App - Android
Contributions:102 commits, 108 PRs, 201 pushes in 2 months
androidmobile-applicationkotlinkotlin-androidmultimodule
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