iOS Engineer (Contract)

About Us: We are Two Circles. We are a Sports & Entertainment Marketing business. We grow audiences and revenues. We do that by knowing fans best. We work with clients to help them understand & influence what their fans are doing - the way fans spend their money, the events that fans attend, the channels fans respond to, the content fans watch and more. And we use the understanding this gives us to help our clients grow. Grow their audiences and grow their revenues - both direct to consumer and business to business revenues. Our platforms and services are trusted by over 900 clients globally, including the English Premier League, Red Bull, UEFA, VISA, the NFL, Nike and Amazon. We are almost 1000 people, based out of 14 offices, and we deliver work for sports and entertainment businesses of all shapes and sizes all over the world. As part of our exciting growth journey, we're expanding our Mobile Engineering team and are on the lookout for a talented iOS Engineer to join us on a hybrid basis at our London office. This is a rare chance to work on high impact greenfield products for some of the biggest and most iconic sports brands in the world. You'll be at the forefront of building modern, scalable apps from the ground up, helping shape the future of fan engagement across global sport. You'll bring deep technical expertise and strong delivery focus. Contributing high-quality code, collaborating closely with our in-house teams, and helping us hit key milestones. You'll be embedded in a passionate, cross-functional team and supported to do your best work while working on fast-moving, purpose-driven projects that reach millions of fans worldwide

Role: Build and maintain high-quality native iOS applications using Swift and SwiftUI, with a focus on fast delivery and maintainable architecture Work closely with internal teams and client stakeholders to develop end-to-end mobile features that align with product goals and timelines Contribute to architectural decisions in collaboration with senior engineers — with a strong emphasis on scalability, testability, and performance Collaborate within cross-functional squads (designers, PMs, QA, backend) to ship new features to live apps used by sports fans worldwide Ensure a high standard of quality through code reviews, testing, and engineering best practices Join a hybrid working environment, with 2 days per week in our London office to enable strong collaboration on fast-moving projects

What We're Looking For Proven expertise in Swift and SwiftUI, ideally with multiple apps shipped to the App Store or in production use Strong understanding of scalable app architectures (e.g. MVVM-C, TCA, modularisation, dependency injection) Passion for delivering high-quality UI/UX that adapts well across screen sizes and device types Comfortable working in CI/CD environments, using tools like Bitrise, CircleCI, GitHub Actions, or Azure DevOps Hands-on experience with agile development practices, and a pragmatic approach to testing including unit, integration, and UI testing