Top IoS Developer Jobs in London

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 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.

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

Design, implement, test and deliver resilient iOS software within a permanent feature team. Apply Agile methods, build CI/CD pipelines, own release processes (code signing, provisioning, App Store Connect), implement logging/monitoring (Firebase), design modular architectures (MVVM/VIPER/Clean), secure data with Keychain, and mentor engineers through reviews and growth plans.

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

The Mid iOS Engineer will develop high-quality iOS features, collaborate with teams, and ensure polished user experiences in a fintech app.

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

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.

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.

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.

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.

As a Junior iOS Engineer, you will deliver new functionality for the Trainline app, maintain code quality, collaborate with cross-functional teams, and support team members through mentoring and knowledge sharing.

The Senior iOS Engineer will lead the design and development of Ohme's mobile app, mentor team members, and ensure architectural excellence in iOS development.

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.

The Software Engineer (iOS) will develop and maintain features of the Rightmove app, collaborate on product design, ensure code quality, and optimize user experience through analytics and testing.

As an iOS Engineer, you'll develop features for the Midnite iOS app, ensuring performance, quality, and intuitive user experiences. Work closely with cross-functional teams, maintain a clean codebase, and contribute to CI/CD workflows while addressing technical challenges.

Design, build and operate shared platform services (CI/CD, deployment infra, observability, feature flags). Partner with product teams, own reliability/scalability (on-call, incident response), define infrastructure standards, evaluate third-party tools, and mentor engineers to improve developer experience and reduce operational toil.

The Senior iOS Engineer will build and ship iOS experiences, write clean Swift code, collaborate with teams, and contribute to app architecture and evolution.

The role involves evolving Spotify's mobile architecture, implementing scalable systems, collaborating with teams, and improving developer experience across iOS and shared C++ codebases.

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.

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