Top IoS Developer Jobs in London

The iOS Engineer will enhance developer experience, maintain CI/CD pipelines, improve the iOS codebase, and support product stability for SumUp's mobile applications.

Own and build the iOS experience for high-volume international payments, partnering with product to design, develop, test, and ship scalable mobile features, improve UX and code quality, and collaborate across Mobile engineering teams.

The Principal iOS Engineer will lead the development of advanced iOS applications, drive architectural direction, and integrate AI/ML solutions to enhance user experiences across Expedia Group's travel products.

As an iOS Engineer at Freetrade, you will develop and maintain the iOS app, collaborate with cross-functional teams, ensure high performance, quality, and customer satisfaction, and guide platform priorities.

Drive iOS technical direction and architecture, deliver high-impact code, mentor engineers, lead cross-functional initiatives to modernize the app, improve developer velocity, ensure platform health, and own incident response and operational quality.

Develop, test, and maintain major features for the Feast iOS app using Swift and SwiftUI. Collaborate with designers, developers, and editorial/commercial teams, participate in product and technical decisions, perform peer code reviews, and drive innovation through regular hack days to deliver a high-quality, personalized recipe experience.

As a Senior iOS Engineer, you will lead the development of high-volume features for Wise's mobile app, ensuring seamless user experiences and collaborating closely with product teams.

As an iOS Developer, you will focus on building iOS applications, participating in code reviews, testing, and collaborating with the development team.

Build and own end-to-end send flows in Wise's iOS app, focusing on polished UI, animations, recipient discovery, and internationalised experiences. Collaborate with product and design, ship features, maintain code quality, and influence UX across the mobile organisation.

Build and ship native iOS features for an AI Neobank: onboarding, accounts, cards, payments, transfers, rewards and AI-assisted journeys. Improve performance, reliability and UX; integrate APIs, authentication and secure data handling; collaborate with product, design, backend and AI engineers and own app quality from release through production monitoring.

The iOS Engineer will enhance customer experiences on ASOS apps, deliver quality features, work with designers, and maintain codebase integrity.

Design and ship high-performance, pixel-perfect iOS experiences using Swift, SwiftUI/UISKit and Combine; optimize memory/CPU/GPU; integrate high-throughput APIs or model outputs; own features end-to-end through App Store deployment; collaborate with AI researchers to deliver scalable mobile AI products.

Design, build and maintain scalable, performant iOS applications. Collaborate in Agile teams, contribute to APIs and cloud integrations, perform code reviews and unit testing, troubleshoot front- and back-end issues, and drive quality, performance, security, and continuous improvement.

Design, implement, and deliver high-quality native iOS and/or Android features. Collaborate on architecture, shape long-term mobile strategy, maintain testable code and CI/CD pipelines, and mentor peers to scale mobile apps globally.

As an iOS Engineer, you will build new features, contribute to internal tooling, and collaborate with teams to enhance our banking platform.

The iOS Engineer will build and maintain Starling's banking mobile app, focusing on security, user experience, and clean code delivery.

As a Senior iOS Engineer at Flo, you will design, develop, and maintain mobile applications, ensuring high-quality user experiences while collaborating with cross-functional teams. You'll take ownership of the mobile product lifecycle and optimize app performance for users globally.

The iOS Engineer will contribute to product development, mentor other engineers, and ensure technical excellence in a dynamic agile environment.

Develop and maintain Billetto's iOS consumer and organiser apps. Build native Objective-C features, custom UI components and animations, integrate REST APIs and analytics, use third-party SDKs, and collaborate within an agile startup team to ship App Store releases.

The Senior iOS Engineer will lead product decisions, enhance the iOS app, maintain app architecture, and ensure excellent user experiences.

Develop high-performance UIs in C++ and Objective-C, optimize code, and collaborate with design and QA to ensure high-quality applications for macOS and iOS.

Lead and deliver iOS features, improve architecture and code quality, review and mentor engineers, plan projects, ensure operational readiness, collaborate across teams, and participate in hiring and team growth.

The Mobile Engineer (iOS) will develop and maintain the iOS app, collaborate with cross-functional teams, ensure app quality, and assist with customer support.

Lead end-to-end iOS feature delivery, shape platform architecture, migrate UIKit to SwiftUI, apply Swift Concurrency, manage CoreData persistence, ensure accessibility, adopt AI tools responsibly, mentor engineers, and support CI/CD and release processes within a hybrid UK-based team.

Lead development of Depop's iOS pricing features within a cross-functional team. Modernize and maintain production iOS apps in Swift, design pragmatic architecture (MVVM-C), integrate with API-driven backends, ensure test coverage across unit/integration layers, mentor engineers, and influence technical direction.