Top IoS Developer Jobs in London

Develop and deliver native iOS features for the Nutmeg app using Agile practices. Own tasks end-to-end, write tests, participate in releases and code reviews, troubleshoot defects, contribute to technical initiatives, and collaborate across product, operations, and engineering to improve the codebase and tooling.

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.

Senior iOS engineer on the Expedia Group Design System team who builds and maintains high-quality, accessible UI patterns and experiences. Leads design reviews, implements complex UI/animations, ensures performance and observability, debugs and monitors production apps, mentors engineers, and uses AI-assisted tools like Claude Code to accelerate delivery.

Own and build the iOS experience for Wise's high-volume Send and Business Send teams. Partner on product, design and roadmap, implement scalable mobile features end-to-end, ensure high UX and code quality, write testable code, and collaborate across mobile engineering to ship impactful functionality for customers sending large sums internationally.

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.

Build and maintain Wise's iOS Account experience as part of a cross-functional mobile team. Design, scope, and implement customer-facing features; ensure code quality, performance, scalability, and consistency across platforms; collaborate with product, design, analytics, and other engineers.

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, develop, and maintain Entrust's iOS SDK for document capture. Implement camera capabilities, on-device image processing and ML, integrate RESTful APIs, improve CI/CD and test automation, collaborate with product and design to deliver accessible, high-quality SDK features across devices.

Join the Baldur squad to design and build Spotify's delegated authorization and session management systems. Develop secure, cross-platform C++ libraries and native iOS Swift components for token issuance, refresh, revocation, and on-device credential storage, collaborating with client and backend teams to scale OAuth 2.0 infrastructure used by millions.

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.

The Senior iOS Engineer will develop and enhance iOS applications and a Mobile SDK, ensuring a premier user experience while mentoring peers and setting technical direction.

As a Senior iOS Engineer, you'll develop and enhance iOS applications, collaborate with designers, ensure code quality, and maintain user experience.

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.

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.

Build and maintain high-quality, scalable iOS applications using Swift and core iOS frameworks. Collaborate with product, design, and engineering to deliver performant, accessible experiences across iPhone and iPad. Contribute to architecture, testing, code quality, and platform evolution within agile cross-functional teams.

Build and maintain analytics and experimentation instrumentation for ASOS iPhone and iPad apps. Implement event tracking, integrate SDKs (e.g., Optimizely), ensure schema conformity, investigate and fix data quality issues, support experimentation and monitoring, review peer contributions, and maintain testable, reliable code for scalable mobile analytics.

Design, build and maintain feature-rich iOS applications for a fintech SaaS platform. Deliver well-tested, modular code using MVVM-C and collaborate across small teams to ship configurable features for global bank customers.

Design, build, and evolve iOS mobile experiences and reusable platform components. Improve scalability, performance, reliability, and developer experience. Collaborate with product, design, and platform teams; participate in code reviews, testing, observability, experimentation, and prototyping. Embrace modern tooling and contribute to long-term technical health and engineering culture.

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

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 at SumUp will develop the SumUp Pay iOS app, focusing on features, performance, architecture, and cross-functional collaboration. They will ensure code quality and user experience while working with various teams.

Build and maintain native iOS apps for 3D visualization, measurements, and AI-assisted workflows. Implement and optimize UI components, integrate backend APIs and real-time pipelines, write testable Swift code, participate in architecture and code reviews, and troubleshoot performance and device-specific issues while working remotely within EU timezones.

Lead and define long-term iOS technical strategy and standards, drive cross-platform architecture, modernise engineering practices, mentor senior engineers, evaluate emerging technologies including AI, and influence product and technical decisions across the organisation.

Lead development of the Live View feature for iOS, build mobile apps that integrate with devices, collaborate cross-functionally, contribute to architecture and design, and follow full SDLC practices including code reviews, source control, testing, and operations.