Jan Marsoun
Principal Software Engineer at Gen
Prague, Prague, Czechia
Summary
👤
Senior🎓
Top SchoolJan Marsoun is a Principal Software Engineer based in Prague with 11 years of experience building high-profile mobile apps and internal libraries, currently contributing to flagship security products like Norton 360 and Avast Mobile Security. He specializes in Android (Kotlin/Java) and Jetpack Compose, with a strong track record of performance optimization and security-focused code ownership. Previously he led development for Ubiquiti’s WiFiman and UISP apps serving over a million monthly users and contributed to server-side tooling including a Speed Test network. His background spans embedded firmware in C++ to cross-platform UI efforts using Compose Multiplatform, reflecting a rare full-stack mobility across device, native, and backend concerns. Jan balances pragmatic engineering with a preference for clean code and takes on side projects—recently exploring game development—bringing curiosity and product-minded craftsmanship to every codebase.
11 years of coding experience
12 years of employment as a software developer
Bachelor's degree, Software Engineering, Bachelor's degree, Software Engineering at Czech Technical University in Prague
Czech, English
Stackoverflow
21reputation
6kreached
8answers
0questions
Github Skills (33)
kotlin10
jvm10
graalvm10
java10
http-client10
android10
square10
android-bluetooth9
bluetooth-low-energy9
energy8
android-library8
zigbee8
custom-component8
rxjava7
bluetooth7
Programming languages (5)
Github contributions (5)
marsounjan/DayOfWeekPicker
Sep 2017 - Oct 2017
Contributions:8 commits, 7 pushes, 1 branch in 10 days
marsounjan/icmp4a
Jan 2024 - Jun 2024
Contributions:29 pushes, 5 branches, 22 tags in 5 months
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