iOS Developer

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)