Senior iOS Engineer

X-Team International Pty Ltd; City of Melbourne; On-site; AUD 120,000 - 190,000; Full time

Job summary

X-Team International Pty Ltd – Melbourne VIC is seeking experienced iOS engineers to join a mobile squad for work on two strategic projects at a major Australian bank. You will develop offline-first capabilities using SQLite, design architectures that tolerate latency and outages, and integrate gRPC with Protocol Buffers on iOS.

Ideal candidates have 5+ years of native iOS experience, strong Swift/SwiftUI skills, and hands-on experience with offline caching, MVVM/Redux/TCA, and OAuth2 security.

Qualifications

• 5+ years of native iOS engineering experience.
• Deep expertise in Swift and SwiftUI.

Responsibilities

• Build offline-first architecture with SQLite for local data caching and offline state management.
• Design mobile architectures that handle network latency, backend outages, and data sync.
• Consume gRPC services and work with Protocol Buffers and automated code generation on iOS.
• Implement reactive architecture patterns (MVVM, Redux, or TCA) for managing concurrent data loading and UI state.
• Apply iOS security fundamentals including Keychain management, certificate pinning, and OAuth2 authentication flows.

Skills

Swift

SwiftUI

SQLite

gRPC

Protocol Buffers

MVVM

Redux

TCA

Security

OAuth2

Job description

X-Team International Pty Ltd – Melbourne VIC

X-Team is seeking talented engineers to join us to participate in a mobile engineering squad at one of Australia's largest banks, working on two strategic projects: focusing on mobile app resiliency used by millions of customers, and building Open Banking features. You'll build it in Swift and SwiftUI with a SQLite caching layer, using networking and database code generated from gRPC definitions.

Key responsibilities

Build offline-first architecture with SQLite for local data caching and offline state management

Design mobile architectures that handle network latency, backend outages, and background data synchronization

Consume gRPC services and work with Protocol Buffers and automated code generation on iOS

Implement reactive architecture patterns for managing concurrent data loading and UI state

Apply iOS security fundamentals including Keychain management, certificate pinning, and OAuth2 authentication flows

About you

5+ years of native iOS engineering, with deep expertise in Swift and SwiftUI

Stronger expertise in Backend mobile engineering rather than just experience in Frontend / UI

Extensive production experience designing offline-first apps with SQLite for local data caching and offline state management

Track record of building mobile architectures that handle network latency, backend outages, and background data synchronization

Practical experience consuming gRPC services and working with Protocol Buffers and automated code generation on iOS

Reactive architecture experience (MVVM, Redux, or TCA) for managing concurrent data loading and UI state

iOS security fundamentals: Keychain management, certificate pinning, and OAuth2 authentication flows

Able to work onsite in Melbourne for the first 2 to 4 weeks