Android Engineer (Australia-Melbourne)

X-Team; City of Melbourne; On-site; AUD 110,000 - 165,000; Full time

Job summary

X-Team is hiring a contractor to join a mobile engineering squad for a major Australian bank project. You will build an offline-first Android app in Kotlin/Jetpack Compose with SQLite persistence, ensuring resilience when backend services fail.

Expect 6–8 months onsite in Melbourne at the start to align with the team and share knowledge. The role emphasizes strong Kotlin expertise, MVVM/MVI patterns, and secure coding while delivering Open Banking features that connect customer accounts across

Qualifications

• 5+ years of senior native Android engineering experience.
• Expert Kotlin and Jetpack Compose skills.
• Production experience with offline-first apps using SQLite.
• Kotlin Coroutines and Flow experience.
• Hands-on with gRPC and Protocol Buffers.
• Knowledge of Clean Architecture, MVVM or MVI, and DI with Hilt or Dagger.
• Strong Android security fundamentals and best practices.
• Willingness to work onsite in Melbourne for initial weeks.

Skills

Senior Android engineering

Kotlin

Jetpack Compose

Offline-first architecture

SQLite persistence

Kotlin Coroutines & Flow

gRPC & Protocol Buffers

MVVM or MVI

Dependency injection (Hilt/Dagger)

Android security fundamentals

Onsite Melbourne availability

Tools

gRPC

Protocol Buffers

SQLite

Hilt

Dagger

Jetpack Compose

Job description

This is a contractor role open to candidates based in Australia.

You’ll join a mobile engineering squad at one of Australia’s largest banks, working on two priority projects: making the Android app resilient when backend services go down, and building Open Banking features that let customers link accounts from other banks.

The core of the work is an offline-first architecture. When backend APIs slow down or fail, the app keeps working instead of freezing or showing an empty screen. You'll build it in Kotlin and Jetpack Compose with a SQLite persistence layer, using networking and database code generated from gRPC definitions. Millions of customers use this app.

The contract runs 6 to 8 months. Expect the first 2 to 4 weeks onsite in Melbourne, to get context and share knowledge with the team.

About the Role

This is a contractor role open to candidates based in Australia.

You’ll join a mobile engineering squad at one of Australia’s largest banks, working on two priority projects: making the Android app resilient when backend services go down, and building Open Banking features that let customers link accounts from other banks.

The core of the work is an offline-first architecture. When backend APIs slow down or fail, the app keeps working instead of freezing or showing an empty screen. You'll build it in Kotlin and Jetpack Compose with a SQLite persistence layer, using networking and database code generated from gRPC definitions. Millions of customers use this app.

The contract runs 6 to 8 months. Expect the first 2 to 4 weeks onsite in Melbourne, to get context and share knowledge with the team.

Most Important

• 5+ years of senior native Android engineering, with expert Kotlin and Jetpack Compose
• Production experience building offline-first apps with SQLite, including local caching, schema migrations, and thread-safe data synchronization
• Kotlin Coroutines and Flow, used to keep UI rendering separate from background network work
• Hands-on experience with gRPC, Protocol Buffers, and automated code generation on Android
• Clean Architecture, MVVM or MVI, and dependency injection with Hilt or Dagger
• Android security fundamentals: Android Keystore or EncryptedSharedPreferences, certificate pinning, and OAuth2
• Able to work onsite in Melbourne for the first 2 to 4 weeks

Nice to Have

• Experience building or using code-generation tools that map API definitions to SQLite schemas and DAO interfaces
• LaunchDarkly or similar feature flagging, for staged rollouts and instant kill-switches
• Working knowledge of iOS patterns (Swift and SwiftUI), so you can keep behavior consistent with the iOS squad
• FinTech background: financial dashboards, Open Banking (Consumer Data Right) flows, or retail banking apps

Personal Traits

• You prefer strongly typed contracts over loose JSON, and you like it when tooling generates the boilerplate for you.
• You treat security and penetration test findings as part of the build, not a review at the end.
• You share context easily, with a new team onsite in the first weeks and with iOS colleagues after that.