iOS Architecture Lead — SwiftUI, Offline-First

Dex; Greater London; On-site; GBP 90,000 - 150,000; Full time

Job summary

Dex seeks a Senior iOS Engineer to own the complete iOS architecture for a growing fintech product. You will rebuild web surfaces into native iOS experiences, define interaction patterns, and drive performance and offline behavior for iPhone and iPad.

You will lead the iOS design system, collaborate with Design, Product, and web engineering teams, and establish robust testing and release pipelines for a production-grade mobile app.

Qualifications

• You've built and shipped native iOS applications in Swift and SwiftUI.
• Strong judgment on mobile interaction patterns and offline behavior.
• Designed iOS architecture that scales with a growing team and product.
• Owned and maintained an iOS design system for long-term maintainability.

Responsibilities

• Rebuild existing web products as native iOS experiences, deciding what translates and what needs reshaping for mobile.
• Define the entire iOS architecture, including interaction patterns, offline behavior, notifications, and performance standards.
• Own the iOS design system, ensuring coherence and maintainability as the product scales.
• Set up and maintain the testing, observability, and release pipelines for a production-grade native application.
• Collaborate directly with Design, Product, and web engineering teams to adapt existing surfaces without losing core intent.

Skills

Swift

SwiftUI

iOS architecture

Offline caching

Design system ownership

Job description

Dex seeks a Senior iOS Engineer to own the complete iOS architecture for a growing fintech product. You will rebuild web surfaces into native iOS experiences, define interaction patterns, and drive performance and offline behavior for iPhone and iPad.

You will lead the iOS design system, collaborate with Design, Product, and web engineering teams, and establish robust testing and release pipelines for a production-grade mobile app.