Sebastian Zalewski
Staff Software Engineer at Drivemode
Tokyo, Japan
Summary
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Top SchoolSebastian Zalewski is a senior software engineer with seven years of professional experience, currently building mobile products at Wolt after a senior engineering role at Spotify. He specializes in Android and cross-platform mobile development, passionate about Kotlin Multiplatform, Jetpack Compose/SwiftUI, concurrency, and build systems like Gradle and Bazel. Sebastian has led Android efforts at PayPay—delivering merchant features, a WatchOS companion app that earned internal recognition, and a reputation for shipping reliable, well-tested code. He combines low-level language experience (C/C++) with modern mobile tooling, enjoys automating repetitive work, and brings a practical focus on scalable architectures and developer productivity. Based in Stockholm with roots in Poland, he blends deep hands-on implementation skills with product-minded delivery.
7 years of coding experience
10 years of employment as a software developer
Bachelor's degree, Computer Software Engineering, Bachelor's degree, Computer Software Engineering at Uniwersytet im. Adama Mickiewicza w Poznaniu
English, Polish
Github Skills (39)
kotlin10
barcodes10
github-desktop10
bazel-rules10
electron9
git9
typescript9
bazel9
lru9
qr-code9
disk-cache9
github8
android8
barcode-scanner8
watchos7
Programming languages (5)
Github contributions (5)
zalewskise/rules_kotlin
Jul 2023 - Jun 2025
Bazel rules for Kotlin
Contributions:19 pushes, 9 branches in 1 year 11 months
zalewskise/rules_android
Apr 2025 - Apr 2025
Android rules for Bazel
Contributions:1 push, 1 branch in 1 day
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