Senior Mobile Engineer · 11+ years · Android, iOS & Cross-platform

Senior Mobile Engineer building reliable products from idea to production.

I build and scale mobile applications across Android, iOS, and cross-platform environments. From architecture and API integration to automated releases and production reliability, I take ownership of the engineering work that turns product requirements into shipped software.

Contact me View résumé, PDF

LinkedIn GitHub Selected work

Selected impact

proven production track record

Measurable engineering & product impact.

A track record of taking technical ownership in production — unblocking critical business funnels, halving build times, and scaling apps to millions of users.

10×

Merchant Self-Registration

Took over a 6-month KYC/KYB self-registration project at Moka POS and shipped in 1.5 months; self-registered merchant conversions grew 10×.

99.8%

Crash-Free Stability

Elevated crash-free users from 82% towards 99.8% in two months across 1M+ merchants at Moka POS / Gojek by resolving 27 broken background syncs.

1 → 37

Codebase Modularization

Re-architected monolithic Android codebase into 37 modules at SWAT Mobility, cutting Gradle build times from 8–10 minutes down to 3–4 minutes.

10,000+

Daily Delivery Orders

Engineered SWAT's regional logistics driver product solo on an existing routing platform, live across 5 countries.

Selected work

2018 — 2026

Role

Senior Android Developer

Org

SWAT Mobility

Years

Jun 2023 — Sept 2026

Domain

Mobility · route optimisation · B2B & B2C

SWAT Driver

Driver-facing dispatch and turn-by-turn navigation for a regional mobility platform. Drivers open it before dawn and keep it open all day, so every crash is a stranded passenger.

Replaced an unsupported map SDK and rewrote 10 map screens from XML to Compose in 1.5 months, which unblocked releases
Built the logistics product solo, now live in 5 countries with 10,000+ delivery orders a day
Rebuilt the Android architecture from a single module into 37 and cut build time by more than half
Built the CI/CD pipeline from nothing: every release now ships through it to Play Store, Firebase and Huawei AppGallery
Built AI agents for UI automation, crash triage and PR review, lifting team throughput by up to 70%

Case studies

Map SDK rescue: the release blocker 10 screens to Compose · 1.5 months

Context: Our forked map SDK was outdated and no longer supported by its maintainers, and its native libraries didn't meet Google Play's 16 KB page-size requirement. We couldn't keep it in production: new features were blocked, and customers were threatening to churn.
What I did: Researched community alternatives and chose a map SDK that worked with our existing map infrastructure. Switching meant rewriting every map screen from XML to Jetpack Compose, across both core products on phone and tablet.
Outcome: Shipped in 1.5 months: 10 screens across people transport and logistics (2 + 2 on phone, 3 + 3 on tablet). Releases resumed, and the company went back to shipping features and earning revenue.

Logistics product, built solo 5 countries · 10,000+ orders a day

Context: SWAT pivoted into delivery logistics, reusing its route-optimisation engine for B2B retail. The driver app needed a complete logistics flow, and I was the only engineer building it.
What I did: Designed and built the logistics features end to end on top of the existing route-optimisation platform, and took them through release in each market.
Outcome: Live in the UAE, Singapore, the Philippines, Thailand and Japan, handling 10,000+ delivery orders a day and opening a new B2B retail revenue line.

Build speed & code-quality foundations Builds 8–10 → 3–4 min · 80% test coverage

Context: Gradle builds took 8–10 minutes. Features were tightly coupled with no separation of concerns, which made the app hard to scale or maintain. There were no unit tests and no documentation, and this was before AI coding assistants.
What I did: Split the app into multiple modules, optimised the Gradle scripts, built up unit tests, added Detekt for lint checks, and built a CI/CD pipeline that runs the tests and publishes with Fastlane.
Outcome: Builds dropped to 3–4 minutes. Unit-test coverage reached 80%, verified with JaCoCo reports. Detekt enforces a shared coding style, and one command bumps the version, runs the tests and publishes to staging or production.

Kotlin Jetpack Compose Maps SDK Coroutines Room Fastlane Detekt JaCoCo Playwright

View on Google Play

Turn-by-turn navigation & drop-off, Singapore

SWAT Driver in navigation mode: an active route across central Singapore, the next turn onto Moulmein Road, and the drop-off card for 300 Thomson Road. — Turn-by-turn navigation & drop-off, Singapore

Role

Lead Android Engineer → Engineering Manager

Org

Moka POS, then Gojek

Years

Nov 2018 — Feb 2022

Domain

Point of sale · retail & food · SaaS

Moka POS

Point-of-sale for Indonesian merchants — payments, KYC/KYB onboarding, transactions and receipt printing. Led 12 Android engineers on core client architecture, then stepped up to Engineering Manager leading 13 engineers across Android, QA and backend.

Rescued KYC/KYB self-registration: Took over a critical merchant onboarding initiative estimated at 6 months and shipped it in 1.5 months; self-registered merchant conversions grew 10×
Resolved 27 failing background syncs behind missing transactions, leading 12 Android engineers on a gradual rollout to lift crash-free users from 82% towards 99.8% in two months
Migrated 90 database tables from raw SQL to Room, shipped gradually over six months with zero merchant downtime
As Engineering Manager, led 13 engineers across Android, QA, and backend; set team OKRs, architecture standards, and release SLAs

Case studies

KYC/KYB self-registration: 6-month estimate, shipped in 1.5 10× self-registered users · 1.5 months

Context: Merchants originally had to be signed up manually by sales through back-office admin. The company critically needed merchant self-registration to scale subscriber growth, but the internal engineering estimate was six months — far too slow for commercial goals.
What I did: Took ownership of the project to unblock the business. Streamlined the scope, restructured the verification workflows, and led engineering execution directly aligned with the merchant conversion funnel.
Outcome: Shipped in 1.5 months instead of six. Self-registered merchant conversion grew 10×, immediately feeding the subscription funnel and accelerating merchant revenue growth.

27 broken background syncs, fixed in 2 months Crash-free 82% → 99.8% · 12 Android engineers

Context: Inherited a legacy codebase and found 27 background data syncs that were failing silently. They caused missing transactions, sales discrepancies, and merchants stuck offline.
What I did: Took the initiative and led the turnaround: migrated deprecated background mechanisms to modern Android APIs. Led 12 Android engineers through a disciplined, gradual rollout verified in production.
Outcome: All 27 shipped within 2 months. Sync issues dropped to near zero, crash-free users rose from 82% towards 99.8%, and transaction discrepancy complaints were eliminated.

Kotlin Java Room MVVM Postgres Appium Jenkins

View on Google Play

Moka POS product catalogue on a phone: 88 products, a running cart total of Rp 14.400, and the pay action pinned to the top. — Product catalogue & cart, Moka POS

Role

Senior Android Developer

Org

Moladin

Years

Nov 2022 — Feb 2023

Domain

Automotive marketplace · B2C

Moladin Agent

Field-sales app for agents financing used vehicles. A short engagement with a narrow brief: unblock the sales workflow and leave the team able to ship without me.

Built the Android features sales operations was waiting on
Introduced the company's first CI/CD pipeline, on Jenkins
Set the code review bar and mentored the Android engineers on maintainable, scalable patterns

Kotlin Java SQL Jenkins

View on Google Play

Financing application detail — ID fields masked

Moladin Agent financing application detail: status, amount, and the customer fields an agent captures. Phone number and NIK are masked. — Financing application detail — ID fields masked

2022 — 23 Between Gojek and SWAT I freelanced for eight months while I learned Compose and Flutter, took a three-month contract at Moladin, then spent that spring choosing the next role rather than taking the first one. Happy to walk through it.

Before that

2011 — 2018 · games, iOS, early Android

2017 — 2018

Lead Mobile Developer

Docotel Group · Android, iOS, Go

2015 — 2017

Android & iOS Developer

Indiva Finansia Teknologi · Java, Swift

2011 — 2014

Co-Founder & Game Developer

Agate Jogja Studio · Game production, C#, Unity, Flash

About

11+ years in mobile & software

Engineering lead, former Engineering Manager — back to hands-on code by choice.

I've spent 11+ years building software, primarily mobile. I started by co-founding Agate Jogja Studio, learning firsthand how to ship with constrained budgets and rapid product cycles. Over the years, I engineered mobile products across games, fintech, POS, and logistics.

At Moka POS and Gojek (GoTo Group), I served as Lead Android Engineer managing core client architecture with 12 engineers, then stepped up to Engineering Manager leading 13 engineers across Android, QA, and backend on a commerce platform serving over a million merchants.

After leading engineering teams at scale, I deliberately chose to return to hands-on code. Today I take senior individual contributor ownership across native Android (Kotlin, Jetpack Compose), iOS (Swift, SwiftUI), and cross-platform (React Native, Expo) — driving architecture, API integration, and automated release reliability from idea to production.

11+ yrs mobile & software engineering

1M+ merchants served at Gojek/Moka

13 engineers led as Engineering Manager

Capabilities

core specialization & breadth

Android (Core)

Kotlin, Jetpack Compose, Coroutines, Flow, Room, WorkManager, Paging 3, Multi-module Architecture

iOS

Swift, SwiftUI, UIKit, native module bridging

Cross-platform

React Native, Expo, TypeScript

Architecture

Multi-module, Clean Architecture, MVVM, Offline-First Sync

APIs & Data

Supabase, Firebase, REST, GraphQL, Postgres, SQL

Maps & Navigation

Maps SDK, MapLibre, turn-by-turn routing & dispatch

Testing & Quality

JUnit, JaCoCo, Detekt, Playwright, Appium, BDD with Gherkin

CI/CD & Delivery

Fastlane, GitHub Actions, Jenkins, EAS, Google Play, App Store

AI-assisted engineering

Custom coding agents for automated test generation, PR review & crash triage

Languages spoken

English (Professional), Indonesian (Native)

How I work

product requirements to production

Fast first release, without the rewrite six months later.

A pragmatic engineering framework built on 11+ years of shipping critical consumer, fintech, and enterprise apps.

Delivery Framework

Step 1 · Architectural Foundations
Stack Selection & CI/CD Pipeline

Choose the right stack (Native Android/iOS vs. React Native / Expo) based on product requirements, performance needs, and timeline. Establish modular architecture, CI/CD automation, crash telemetry, and lint checks before feature development begins.
Step 2 · Iterative MVP Delivery
Continuous Builds & Store Releases

Ship predictable, testable builds on physical devices. Integrate backend services (Supabase, Firebase, or custom APIs) with offline resilience. Take features through store compliance and release to Google Play and the App Store.
Step 3 · Reliability & Scale
Production Monitoring & Optimization

Monitor real-world crash-free rates, network latency, and memory footprint. Refactor hotspots, modularize subsystems to maintain rapid build times, and automate regression coverage as feature scope grows.

Engineering Principles

AI as a multiplier, verified by engineering rigor

I integrate AI workflows daily for test generation, boilerplate, and triage — but every line of code is human-verified and anchored in sound architecture.
Every release through an automated pipeline

Releases are automated via Fastlane and CI/CD pipelines, never built ad-hoc from an individual laptop. Every build is reproducible, tracked, and tested.
Real-device validation over emulator assumptions

Testing prioritizes physical devices to catch OEM-specific background limits, battery throttling, and intermittent connectivity that emulators hide.

Open to

remote opportunities

Open to remote full-time and contract opportunities.

I’m interested in senior mobile engineering roles and long-term contractor engagements with teams building and scaling real products. I’m based in Indonesia (GMT+7) and can arrange reasonable overlap with US working hours.

Full-Time IC