TRIA
iOS Developer
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Senior Mobile Software Engineer – iOS
Hybrid: North Bristol office (3 days per week)
£60,000 – £75,000 | + Bonus | Industry Leading Benefits
We're excited to be recruiting for a Senior Mobile Software Engineer (iOS) to join a growing SaaS business operating in highly regulated, safety-critical industries.
Think mission-critical products, real technical ownership, and an experienced engineering team, all without the bureaucracy of a larger corporate.
Joining a close-knit mobile team, you'll help drive the next generation of a best-in-class iOS app used by frontline teams who depend on it working reliably, connectivity or not.
The Headlines
A senior, hands-on iOS role with genuine architectural influence, working across a codebase with real depth (Swift and Objective-C side by side), and offline-first functionality at its core.
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You'll mentor peers, shape technical direction, and have a direct say in how the app evolves.
What You'll Be Doing
- Driving the next generation of a best-in-class iOS app
- Working across Swift and Objective-C in a mature, evolving codebase
- Building and maintaining offline-first functionality using local data persistence
- Mentoring peers and sharing expertise in Swift, UIKit, and app architecture
- Staying ahead of the latest iOS SDK, frameworks, and Apple developer tools
- Communicating progress, risks, and technical insight clearly within the team
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What We're Looking For
- Proven experience releasing and maintaining iOS apps in the App Store
- Strong understanding of UIKit, Foundation, Swift Concurrency, and app lifecycle
- Experience with REST APIs, JSON, and data persistence using SQLite
- Familiarity with modern CI/CD tooling (Xcode Cloud, Azure DevOps, or GitHub Actions)
- Solid grasp of QA methodologies, Agile development, and SDLC best practices
Tech Stack
- Languages: Swift, Objective-C
- UI: UIKit, SwiftUI, Auto Layout
- Data: SQLite, REST APIs, JSON
- Tooling: Xcode, Instruments, Xcode Cloud / Azure DevOps / GitHub Actions
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