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Satria WardanaLead Frontend Mobile Engineer

I lead mobile teams that ship stable Flutter apps at scale.

15+ years in software engineering, the last 5+ leading a team of six at Catalyst Tech. I rebuilt Jamtangan from React Native to Flutter, built voila.id from scratch, and set up the CI/CD that tests every pull request and ships releases to the App Store and Google Play.

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Experience at

Catalyst Tech
Grab
KUDO
LinkIT360
Jatis Mobile

Catalyst Tech · Nov 2020 – Jul 2026

Results from my last role

Three flagship apps (Jamtangan, Voila and Picklist), one six-person team, and a delivery pipeline that keeps quality high and costs low.

Crash-free sessions: 99.97%; After the React Native to Flutter rewrite, up from under 50%.
Unit test coverage: 95%; Enforced on every pull request by an automated CI quality gate.
CI/CD infrastructure cost: −95%; Cut by moving builds to self-hosted GitHub runners, which also made them faster.
Engineers led: 6; 1 senior, 2 mid-level and 3 junior engineers across three apps.

Mobile products · 2013 – 2026

Selected work

Apps I've built, rebuilt or helped scale, from telecom self-care apps in Indonesia to payments across Southeast Asia.

Catalyst Tech · React Native → Flutter

Jamtangan

I led the team that rebuilt Jamtangan's legacy React Native app in Flutter. The new app runs significantly faster, the codebase is easier to maintain, and crash-free sessions went from under 50% to 99.97%.

Role: Engineering lead, team of 6
Stack: Flutter, Dart
Delivery: GitHub Actions CI/CD

Crash-free sessions before → after

React Native appunder 50%

Flutter rewrite99.97%

Catalyst Tech · Built from scratch

Voila

My team built the voila.id app in Flutter from the first line of code, then scaled and maintained it in production.

Flutter
Dart
Greenfield

Catalyst Tech · Flagship app

Picklist

The third flagship app my team owned end to end: development, scaling and long-term maintenance.

Flutter
Dart

Grab · 4 countries

Grab Digital Goods

Built and scaled Pulsa (mobile credit) and bill payments in the Grab Passenger app for Indonesia, Vietnam, Thailand and the Philippines.

Android
Payments
Test automation

KUDO · Flights & trains

KUDO Travel

End-to-end flight and train booking with one-way, return and round-trip itineraries, plus Firebase push notifications and Leanplum campaigns for retention.

Android
Firebase
Leanplum

LinkIT360 · Pedometer

Langkah

A step-tracking app I took through the full lifecycle, from the initial architecture to its production release.

Android
Java
Full lifecycle

LinkIT360 · BimaTri, myXL, AXISnet

Telecom apps

High-traffic self-care apps for Indonesian mobile operators. I worked on development, maintenance and Google Play releases.

Android
Google Play

Engineering leadership

How I run a mobile team

I pair people management with hands-on technical direction. These are the practices I bring to a team.

Managing a team of six

At Catalyst Tech I managed 1 senior, 2 mid-level and 3 junior engineers, including their performance reviews, while setting technical direction for three apps.

Architecture migrations

I've led two: React Native to Flutter at Catalyst Tech for speed, stability and maintainability, and MVP to MVVM at KUDO for cleaner separation of concerns.

Testing that everyone owns

At Grab I trained QA engineers to write automated widget tests, so they could add to the automation pipeline themselves and catch problems earlier.

Cost-aware infrastructure

Moving CI/CD to self-hosted GitHub runners cut infrastructure costs by 95% and made builds noticeably faster for the whole team.

on: pull_request → store release Quality gate

An engineer opens a pull requestSame rules for every change, on all three apps
GitHub Actions runs on self-hosted runnersFaster builds at a fraction of the hosted cost
−95% cost
Unit tests and the coverage gateThe pull request can't merge below 95% coverage
≥ 95%
Automated store releaseDeploys to the Apple App Store and Google Play with no manual uploads
Shipped

The delivery pipeline I set up at Catalyst Tech.

2010 – 2026

Experience

Nov 2020 – Jul 2026
Lead Frontend Mobile Engineer

Catalyst Tech
- Flutter
- Dart
- GitHub Actions
- People management
- Directed a 6-person mobile team (1 senior, 2 mid-level, 3 junior) through end-to-end development, scaling and maintenance of three flagship apps: Jamtangan, Voila and Picklist.
- Led the migration of a legacy React Native app to Flutter, with significantly faster performance, better maintainability and crash-free sessions up from under 50% to 99.97%.
- Set up CI/CD with GitHub Actions as a strict quality gate, keeping unit test coverage at 95% across all pull requests.
- Cut CI/CD infrastructure costs by 95% by deploying self-hosted GitHub runners, which also made builds significantly faster.
Oct 2019 – Nov 2020
Senior Software Engineer, Android

Grab
- Android
- Digital payments
- Test automation
- Built and scaled Digital Goods (Pulsa and Bill Payments) in the Grab Passenger Android app for Indonesia, Vietnam, Thailand and the Philippines.
- Ran hands-on training for QA engineers on writing automated widget tests, so they could contribute to the automation pipeline directly and shift testing left.
Sep 2015 – Oct 2020
Android Developer

KUDO
- Android
- Firebase
- Leanplum
- MVVM
- Developed end-to-end flight and train booking with flexible one-way, return and round-trip itineraries.
- Integrated Firebase for real-time push notifications and the Leanplum SDK for targeted marketing campaigns that drove retention and engagement.
- Led the codebase migration from MVP to MVVM for better separation of concerns across the engineering team.
Dec 2013 – Sep 2015
Android Developer

LinkIT360
- Android
- Google Play
- Developed, maintained and shipped high-traffic telecom apps to Google Play, including BimaTri, myXL and AXISnet.
- Built and launched Langkah, a step-tracking (pedometer) app, owning the full lifecycle from initial architecture to production release.
Mar 2012 – Jan 2013
Java Developer, Desktop (J2SE)

PT Camp-AS400
- Java SE
- Built a specialized application for drilling calculations, turning complex engineering formulas into accurate, working code.
Nov 2010 – Nov 2011
Mobile Application Developer, J2ME

Jatis Mobile
- J2ME
- Real-time messaging
- Developed and maintained a real-time multi-messaging app that brought Yahoo Messenger, Facebook Chat and Google Chat together.

Toolbox

Skills

Leadership

Technical Leadership
People Management
Performance Reviews
System Design

Mobile & languages

Flutter
Dart
Kotlin
Java
React Native
PHP
HTML
Visual Basic

Delivery & integration

CI/CD
GitHub Actions
Git
GraphQL
REST API
Firebase
App Store & Google Play releases

AI in my workflow

I use AI tools to speed up everyday engineering work and to try out new ideas.

Ollama + Android Studio: Local AI models connected to Android Studio extensions to speed up development.
OpenAI Codex: Automated GitHub pull request workflows.
Kiro IDE spec mode: Generates project requirements, designs and task lists from a spec.
ZeroClaw & PicoClaw: AI agent frameworks I explore in personal R&D projects.

Certifications

Associate Android DeveloperGoogle for Developers
React Native Mobile App DevelopmentSunberCode
Advanced React Native Mobile Apps DevelopmentSunberCode

Education

Bachelor of Informatics EngineeringUniversitas Budi Luhur · 2011 · GPA 3.34

Award

Runner Up, Games & EntertainmentIndosat Wireless Innovation Contest (IWIC), Jakarta · 2010

Contact

Hiring a mobile engineering lead? Let's talk.

Tell me about your product and your team. I'm happy to walk you through how I'd help, from team setup to the release pipeline.