Jun Tan
Senior Android Engineer at Mercari, Inc.
Tokyo, Japan
Summary
🤩
RockstarJun Tan is a Senior Android Engineer based in Tokyo with 12 years of experience designing and shipping mobile products across consumer and platform teams. Currently at Mercari after senior roles at U-NEXT, ZEPPELIN, and Cookpad, he blends pragmatic engineering with a strong product sense to deliver polished Android experiences. He contributed an enhanced overlay feature to the open-source TourGuide library, demonstrating attention to UX details like customizable styles and interactive behavior. Earlier in his career he built mobile and web apps and even embedded-vision firmware, giving him a rare cross-domain perspective from firmware to high-level Android UI. Known for thoughtful refactors and improving example usage, he favors maintainable, testable code that accelerates team velocity. Fluent in the full Android stack, he balances hands-on implementation with mentoring and incremental architecture improvements.
12 years of coding experience
12 years of employment as a software developer
Stackoverflow
8,375reputation
1.3mreached
27answers
32questions
material-design
top-1%
android-jetpack-compose
top-5%
android
top-1%
Github Skills (17)
kotlin10
android-library10
material-design10
android-native-library10
android10
ui-design9
screen-shot9
android-jetpack-compose9
adb6
mmap6
unicode6
memory-management6
right-to-left6
textview6
linux6
Programming languages (5)
Github contributions (5)
worker8/TourGuide
Jun 2015 - May 2018
TourGuide is an Android library that aims to provide an easy way to add pointers with animations over a desired Android View
Role in this project:
Mobile Developer (Android)
Mobile Developer (Android)Contributions:2 releases, 174 commits, 43 PRs in 2 years 11 months
Contributions summary:Jun primarily contributed to the Android library "TourGuide," enhancing its functionality. Their commits focused on adding an overlay feature with customization options such as overlay style (circle/rectangle), background color, and click behavior. They refactored the overlay implementation and improved example usage.
animationandroid-libraryandroidpointerskotlin
worker8/AndroidDevNews
Jul 2021 - Nov 2022
An app for Android Developers to stay up-to-date with the latest developer news, built with Jetpack Compose
Contributions:70 commits, 2 PRs, 43 pushes in 1 year 4 months
android-developersjetpack-composedeveloper-newsandroidjetpack
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