Mobile Tech Lead · Melbourne, AU

Mobile apps 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

Android iOS Kotlin Multiplatform Jetpack Compose Swift React Native React gRPC GraphQL CI/CD ASP.NET Node.js Python TypeScript

Geoshare app — privacy-first live location sharing

About

What I bring

Deep across the mobile stack, with working fluency in web, backend and hardware integrations. I move fast in unfamiliar territory and bring the team with me — mentoring engineers and aiming for the best possible result for the project and the company.

Platforms & reach

Native Android & iOS, Kotlin Multiplatform and React Native apps in production across Australia, the US and Europe — serving consumers, businesses and enterprise clients.

Selected work

07 PROJECTS

Privacy JUN 2024 – PRESENT Android → Mobile Team Lead
Team of 7

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

Geoshare Current

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 Mobile Tech 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 — hands-on with architecture while owning roadmap and mentorship.

Drove requirements, cross-team coordination and integration testing for the tap-to-pay launch — consuming a partner team's KMP-based state machine in React Native to drive the UI across Android and iOS.
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 — end to end
Engineering · Client · Release

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 2021.

zoox.com/know-your-ride ↗

Fintech SEP 2021 – SEP 2022 Engineering Lead — Bilue
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 via Australia's New Payments Platform.

Athena app — self-service mortgage management

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

Food-tech SEP – DEC 2022 Engineering Lead — Bilue
Technical focus

React Native · React
TypeScript
Kotlin · Swift

Guzman y Gomez

Modernised a high-traffic consumer ordering app, bringing an established live codebase up to current mobile standards.

Refactored the app, replacing outdated tooling and dependencies.
Brought the codebase in line with current React Native, Android and iOS best practices.

Google Play ↗ App Store ↗

Government 2018 – 2021 Android & middleware
Forest Fire Management VIC

Android · Kotlin
.NET

More to Explore & Tarnook

Two Victorian Government apps for Forest Fire Management Victoria — building both the Android clients and the .NET middleware they relied on, and shaping the service contracts so apps and middleware could consume data reliably.

More to Explore — helps users discover outdoor recreational areas across the state; extended existing .NET middleware to add features.
Tarnook — lets FFMVic staff, partner agencies, volunteers and contractors view, record and update key operational information in the field and offline; built the .NET middleware it relied on.

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 Engineer
O2 · Telefónica Germany

Android
Kotlin · Java
MVVM

O2

Worked on the O2 (Telefónica Germany) consumer Android app — introduced an MVVM architecture and built a custom in-app alert system, which I later extracted into a standalone open-source library.

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 ↗

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 animation library used across the RN ecosystem.

GitHub ↗

ONGOING

React Native (core)

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

GitHub ↗

AUG 2017 – JAN 2020

hitogo

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

GitHub ↗

ONGOING

OpenAPI Generator

Recurring contributions to the OpenAPI code-generation framework for the Kotlin and TypeScript API clients.

GitHub ↗