Senior iOS Engineer Contract - Outside IR35
Hybrid role in London (ideally 2/3 days on site), 6 months initial engagement
We're partnered with a fast-growing, product-led fintech business and they are looking to find Senior iOS Engineers to join their mobile team.
You'll work alongside experienced mobile engineers to deliver high-quality features, shape architecture, and help evolve a modern iOS platform used by thousands of customers daily.
What you'll be doing:
• Build and maintain new features within a consumer-facing iOS app
• Collaborate closely with product, design, backend, and QA
• Drive code quality, performance, and scalability
• Tackle technical debt and influence architectural decisions
• Contribute to testing, code reviews, and release processes
Tech environment:
• Swift, SwiftUI (with some UIKit transitioning out)
• MVVM-C architecture
• RxSwift (moving toward Swift Concurrency)
• GraphQL (Apollo)
• Modular architecture using Swift Packages
What we're looking for:
• Strong experience with Swift / SwiftUI in production environments
• Solid understanding of mobile architecture patterns
• Experience building high-traffic consumer apps
• Comfortable working autonomously and making technical decisions
• Familiarity with Git and CI/CD tools (e.g. CircleCI)