Mobile Tech Lead · Melbourne, AU

Platforms built for speed, scale & trust.

I lead mobile teams and architecture across native Android & iOS, Kotlin Multiplatform and React Native - shipping to consumers, businesses and enterprise across Australia, the US and Europe. Recent work spans privacy-first encryption, fintech payments, and in-vehicle systems for autonomous cars.

◦ PROFILE AVAILABLE

LOCMELBOURNE, AU

EXP10 YEARS · TECH LEAD / ENGINEERING LEAD

STACKANDROID · iOS · REACT NATIVE · KMP/CMP

FOCUSFRONTEND · ARCHITECTURE · TEAM LEADERSHIP

Geoshare app - privacy-first live location sharing

About

Track record

My work has been tested hands-on by Apple for their Australian retail stores, shipped on Zoox’s autonomous vehicles at their 2020 global reveal, and merged into React Native core and Lottie - alongside production apps across Australia, the US and Europe.

WHY I DO THIS

Why mobile? Because it’s the device that’s always with us - laptops, TVs and cars each serve their one purpose, while mobile keeps finding new territory to dive into. The problems I enjoy most are the unusual ones: jank-free animation on hardware that can barely afford it, or encryption and background location sharing with little prior art to lean on. And the team I want to run is one I can grow - engineers reaching their real potential, communicating openly and well.

Selected work

06 PROJECTS · ORDERED BY IMPACT

Privacy JUN 2024 – SEP 2026 Lead Mobile Developer
Team of 7

Kotlin · Swift
Kotlin/Compose Multiplatform
Jetpack Compose
gRPC · Encryption

Geoshare

Rebuilt a legacy Android app into a privacy-first location-sharing platform - continuous background location with a cross-platform foundation for iOS. I owned the architecture, security design and cross-platform direction.

End-to-end encryption - X25519 (ECDH) key exchange, HKDF-SHA-512 derivation and ChaCha20-Poly1305 authenticated encryption; the backend never holds cleartext, and the design passed external penetration testing.
Hardened the client with an encrypted local database (SQLCipher) and enterprise-grade obfuscation (DexGuard).
Background location draws ~1–2% per 6 hours (down from double digits) - extending runtime from roughly a day to several days.
Migrated to a single Kotlin Multiplatform + Compose codebase - one implementation per feature, removing iOS/Android divergence.
Defined the gRPC service contracts end to end with the backend team.

Geoshare app - encrypted location sharing interface

Geoshare app - location sharing with contacts

geoshare.global ↗ Google Play ↗ App Store ↗

Fintech JAN 2023 – MAR 2024 React Native Lead
Team of 12

Kotlin · Swift
React Native · React
TypeScript
Apollo GraphQL

Zeller

Took over a mobile project from an external agency, stabilised delivery, and shipped one of Australia's earliest tap-to-pay features across both platforms.

Drove requirements, coordination and integration testing for the tap-to-pay launch, consuming a partner team's KMP-based state machine from React Native on both platforms.
Collaborated directly with Apple to finalise design and implementation for use in their Australian retail stores, with Apple's teams testing the integration hands-on.
Built a custom SDK exposing a single shared payment codebase to both native Android and React Native - adopted by two internal teams.
Mentored engineers - including web developers moving into mobile - to ship React Native features independently.

Zeller app - tap-to-pay payment acceptance

myzeller.com ↗ Google Play ↗ App Store ↗

Hardware JUL 2020 – AUG 2021 Tech Lead

Android
Kotlin
Protocol Buffers

Zoox

Built a pixel-perfect, high-performance in-vehicle infotainment system for an autonomous vehicle under strict design and performance requirements - working across Zoox's design, engineering, QA and audio teams.

Built a custom dual-threaded bitmap rendering pipeline for pixel-perfect, jank-free animation on the in-vehicle display.
Collaborated across design, engineering, QA and audio to polish the full experience.
Showcased at Zoox's global vehicle reveal event in 2020.

zoox.com/know-your-ride ↗

Fintech SEP 2021 – SEP 2022 Tech Lead
Team of 5

React Native · React
TypeScript
Kotlin · Swift

Athena

Built a home-loan lender's first mobile app from scratch - a secure, self-service mortgage experience across iOS and Android - leading a five-person cross-functional team from kickoff through delivery.

Launched Athena's first mobile app on iOS and Android, giving customers full self-service in place of a basic web portal.
Established the mobile security layer - SSL pinning and service-token safeguards.
Delivered biometric login and instant payments support.

Athena app - self-service mortgage management

athena.com.au ↗ Google Play ↗ App Store ↗

Government 2018 – 2021 Android & ASP.NET Developer

Android · Kotlin
.NET

More to Explore & Tarnook

Two Victorian Government apps for Forest Fire Management Victoria - I built both the Android clients and the .NET middleware behind them, shaping the service contracts on both sides.

More to Explore - helps users discover outdoor recreational areas across the state; extended existing .NET middleware to add features.
Tarnook - field tool for FFMVic staff, partners and volunteers to view, record and update operational data offline.

More to Explore app - discovering outdoor recreation areas in Victoria

Tarnook app - field operations data for FFMVic staff

More to Explore ↗ Tarnook ↗

Telecom AUG 2017 – FEB 2018 Android Developer

Android
Kotlin · Java
MVVM

O2

Worked on the O2 (Telefónica Germany) consumer Android app, introducing an MVVM architecture to speed up delivery.

Introduced an MVVM architecture to the Android codebase - improving separation of concerns and testability.
Built a custom in-app alert / messaging system (dialogs, snackbars, in-app views) for consistent user messaging across the app. Open-sourced it as hitogo on GitHub.

O2 Telefónica app - in-app alert messaging

Google Play ↗ GitHub/Hitogo ↗

ALSO: GUZMAN Y GOMEZ (ORDERING-APP MODERNISATION) · STATISTA

Selected OSS work

04 REPOS

AUG 2022 – SEP 2023

Lottie React Native

Refactored the entire package to introduce support for React Native’s New Architecture - the RN ecosystem’s standard animation library (1M+ weekly downloads).

Repo ↗ All my PRs ↗ New Arch PR ↗ Refactor PR ↗

2021 – 2024

React Native (core)

Contributions to React Native core in the native Android and iOS layers.

Repo ↗ All my PRs ↗ Xcode 15 PR ↗ Android Deprecations PR ↗

AUG 2017 – JAN 2020

hitogo

Android in-app alert framework - built inside the O2 project and open-sourced with Telefónica’s approval.

Repo ↗

2019 – 2020

OpenAPI Generator

Contributions to the OpenAPI code-generation framework for the Kotlin API client.

Repo ↗ All my PRs ↗ Kotlin Date Converter PR ↗ Kotlin Enum Handling PR ↗