Binar · assigned to Wings Group
Mobile Engineer
Owning Tukar Guling, Loyalty, and Notification modules; maintaining existing flows; expanding tests; and delivering FCM and Android 16 KB support.
React Native Expo · Native platforms
Mobile Engineer.
React Native, end to end.
I’m Wicak. I build, release, and maintain React Native apps for enterprise and consumer products.
5+ years shipping
⌁ React Native
move fast, performance3x, Choreographer skipped 14 frames, Say hi, Low battery, high standards, A walk might fix it, The main thread needs space, No magic, just logs, Be nice to your future self, One last clean rebuild, Please turn it off and on again, Professionally suspicious of caches, Coffee is optional, Gradle is still thinking, Measure twice, memo once, The profiler knows, Ask before assuming, This bug has lore, Kind people, clean handoffs, Hermes did nothing wrong, Xcode has opinions
01
Things I’ve built
Commerce, field operations, automotive, health, and consumer apps.
WingsStore
A large-scale ecommerce platform for Wings supply partners.
React NativeReanimated
Motion
Offline-first ship surveys for BKI’s field operations.
ExpoTypeScript
Taaruf Online
A full Expo rewrite of an existing matchmaking app.
ExpoReact Native
DaihatsuKu
Car discovery, comparison, ordering, and ownership tools.
React NativeExpo
02
A bit about me
I’m a Mobile Engineer focused on React Native, but I’m also open for iOS and Android native. I work on new apps, rewrites, and existing production codebases.
My day-to-day work covers product features, architecture, API integration, offline data, app-store releases, and maintenance. I’ve worked on products for Wings, BKI, Telkom, Astra, Bank Danamon, MPM, and public-sector teams.
I work with product, design, backend, and QA from rough requirements through release. Earlier in my career I also worked with native Android and iOS, plus maintenance in an existing Flutter app.
React NativeExpoTypeScriptOffline-firstMobile architectureNative iOS & Android
01
Build and release
Product work through store delivery.
02
Architecture and data
Offline flows, APIs, state, and native integration.
03
Production maintenance
Upgrades, bugs, performance, and existing code.
03
Where I’ve worked
Mobile engineering roles since 2020.
- Jul 2025—Now
- Mar—Jul 2025
StafBook · BKI
Mobile Engineer
Designed Motion’s offline architecture for hundreds of BKI surveyors and overhauled its tablet-first SPS, Visit, and Form workflows.
- Aug 2020—Dec 2024
Crocodic Studio
Mobile Engineer
Built and maintained React Native products across public-sector, enterprise, automotive, travel, recruitment, and finance work.
Open to mobile engineering opportunities