Mobile Platform Engineer · AI & LLM Explorer
I Build Mobile PlatformsThat Scale
12+ years shipping production-grade mobile apps for fintech and proptech. I help companies architect React Native ecosystems, build internal SDKs, and lead teams to ship faster with fewer bugs.
Trusted by teams at
Why Work With Me
From firefighting to platform thinking — I help teams ship with confidence
Most mobile projects start fast and slow down within a year. Code gets fragile. Releases get scary. Teams spend more time fixing regressions than shipping value. I've been there and I've spent 12+ years learning how to prevent it.
I help companies architect mobile platforms that stay fast and maintainable as they grow. Whether it's migrating from native iOS to React Native, building internal SDKs that cut duplication across squads, or setting up engineering practices that reduce bugs before they reach QA and I focus on the systems that make delivery predictable.
My work has spanned six markets across SEA — Malaysia, Singapore, Hong Kong, Indonesia, Cambodia, and the Philippines — giving me a rare view of what scales (and what cracks) when teams, codebases, and compliance requirements multiply.
I also mentor engineering teams and work closely with product stakeholders to turn vague requirements into practical, scalable solutions. If you need someone who can both write the architecture doc and explain it to leadership, I'm your engineer.
What I Deliver
Services that turn mobile engineering from a bottleneck into a competitive advantage
Mobile Architecture
Design modular, scalable app architectures using React Native and TypeScript. I build systems that stay fast as your team and feature set grow.
SDK & Platform Development
Build internal SDKs — networking, analytics, state management — that standardise capabilities across squads and eliminate duplicated effort.
Platform Migration
Lead high-risk migrations — native iOS to React Native, legacy codebase refactors — with zero-downtime rollouts and comprehensive test coverage.
Engineering Leadership
Mentor senior and mid-level engineers, standardise PR reviews, and establish engineering governance that raises quality without slowing delivery.
From the Blog
Thoughts on mobile development, architecture, and engineering craft
Notes on Learning Python
A comprehensive reference covering Python from basics to advanced concepts — variables, control flow, OOP, async, and key libraries.
Securing Your API Keys in Xcode: Step-by-step Guide
There are a few different ways to securely add an API key to an Xcode project, depending on the level of security you need and the resources you have available.
Automatically Format Code on Save with ESLint in VSCode: A Step-by-Step Guide
Learn how to use ESLint to automatically format your code on save in VSCode. This step-by-step guide shows you how to set up your editor to save time and ensure consistent formatting.
Work Experience
Lead, Frontend Engineering
Aug 2025 – PresentMaybank Shared Services
- ▸Architected core internal SDKs with 80% test coverage, eliminating duplicated networking and analytics code across 4 SEA markets.
- ▸Standardised engineering governance and PR reviews, cutting average review cycle time by 30%.
- ▸Resolved React Native upgrade blockers that had stalled releases for 2 quarters, restoring weekly deployment velocity.
- ▸Mentored senior and mid-level engineers, improving team velocity and reducing post-release regressions by 40%.
Senior Developer
Apr 2024 – Aug 2025Maybank Shared Services
- ▸Led QR Cross-Border Payment functionality enabling real-time transfers between Cambodia and Malaysia, expanding regional revenue channels.
- ▸Revamped Transfer, Bill Payment, and Mobile Top-Up UX modules, improving user task completion rates by 25%.
- ▸Architected strategic migration to React Native + TypeScript, reducing future feature delivery time by an estimated 35%.
- ▸Built hiring pipeline by conducting technical interviews and defining senior-engineer competency rubrics.
Senior Developer
Jul 2019 – Apr 2024PropertyGuru Group
- ▸Built iOS Authenticator SDK (Swift) that migrated 1.2M+ users seamlessly during the iProperty–PropertyGuru merger, with zero downtime.
- ▸Implemented Apple In-App Purchase in React Native, unlocking a new revenue stream for premium listings.
- ▸Shipped Dark Mode across Malaysia and Hong Kong apps, improving accessibility scores and reducing 1-star reviews citing eye strain.
- ▸Developed shared UI component library for the Messages feature, cutting duplicate front-end code by ~20%.
Developer
Jun 2014 – Jun 2019REA Group Asia
- ▸Re-platformed legacy native iOS apps to React Native, unifying the codebase and halving time-to-market for new features.
- ▸Integrated GraphQL API into native iOS and React Native apps, reducing over-fetching and improving app startup latency.
- ▸Implemented comprehensive Jest unit-test suite, establishing a quality gate that caught regressions pre-merge.
Software Test Engineer
Oct 2013 – May 2014iProperty.com
- ▸Developed automated UI test scripts covering critical user flows, reducing manual QA effort by 60%.
- ▸Implemented Jenkins CI/CD pipeline, shrinking test-and-deploy cycle from days to hours.
Bachelor of IT (Hons). Information Systems Engineering
2009 – 2013Multimedia University, Cyberjaya
Start Your Project
Tell me what you're building. I'll reply within 24 hours with a clear plan — or a referral if I'm not the right fit.
Trusted by engineering teams at Maybank · PropertyGuru · REA Group Asia
Get a Free Consultation
Or reach me directly at masrina.dev@gmail.com
© 2026 Masrina