Top IoS Developer Jobs in London

Build and maintain polished iOS experiences for Wise Account users. Collaborate with product, design, analytics, and engineering teams to plan, scope, and deliver customer-focused mobile features. Own iOS project health, code quality, performance, scalability, testing, and stability while promoting modern technologies and best practices across platforms. Contribute to a global fintech product serving users with cross-currency money management needs.

Develop and maintain native iOS features for the Nutmeg investment application using Agile practices. Own work from estimation through release and production support, troubleshoot defects, write unit and UI tests, participate in code reviews, and contribute to technical improvements. Collaborate with Product, Operations, and engineering teams while supporting releases, knowledge sharing, monitoring, and continuous improvement of the iOS codebase and development processes.

Build and own UI-focused iOS experiences for Wise’s international money-transfer product. Responsibilities include developing localised send flows, recipient discovery, QR scanning, animations, transitions, and responsive interfaces. The engineer will collaborate closely with product and design, own features from technical design through customer feedback, write testable code, and improve mobile UX and code quality across the organisation.

Build and lead production iOS features for an AI-powered travel and expense platform. Design conversational and context-aware experiences using Swift, SwiftUI, modern concurrency, reactive patterns, and robust networking. Integrate LLM-driven capabilities, streaming APIs, offline support, notifications, analytics, experimentation, and privacy-focused state management. Collaborate with product, design, and backend teams while using AI coding tools and maintaining high code quality.

Build, test, maintain, and deploy iOS application features for the Feast recipe app using Swift and occasionally Objective-C. Collaborate with developers, designers, editorial, and commercial teams on product and technical decisions. Review peer code, uphold quality standards, contribute to innovation, and mentor junior developers while working independently or leading projects.

Build and maintain scalable iOS applications for ASOS customers worldwide. Develop high-quality, tested features using Swift and modern iOS technologies, collaborate with product, design, and engineering teams, and contribute to application quality, performance, accessibility, maintainability, and platform evolution. The role involves working in agile teams, supporting technical discussions, improving engineering practices, and developing experiences across iPhone and iPad.

Lead the design, development, and maintenance of Freetrade’s iOS application. Own features end to end, collaborate with backend, design, product, and QE teams, improve code quality and engineering practices, resolve complex technical issues, reduce technical debt, mentor junior engineers, and participate in customer support rotations.

Build and scale high-performance iOS experiences using Swift and modern frameworks. Own features from concept through launch, contribute to app architecture, write maintainable code, improve performance and reliability, and collaborate with Product, Design, and Backend teams. Participate in code reviews and raise engineering standards while delivering polished user experiences for fintech products.

Build and ship native iOS features for an AI neobank, owning onboarding, accounts, cards, payments, transfers and AI-assisted journeys. Ensure app quality, performance, reliability, integrate APIs and authentication, collaborate with product, design, backend and AI teams, and iterate using analytics and production feedback.

Lead the architecture, development, performance, release process, and roadmap for SimpleStudy’s consumer iOS app. Mentor existing mobile engineers, establish technical direction, deliver polished native experiences, run experimentation and analytics, manage App Store operations, and collaborate with engineering and product leadership. The role involves Swift, SwiftUI, UIKit, testing, performance optimization, crash monitoring, and potential mobile team expansion.

Build and deliver high-quality iOS experiences used by millions of customers. Develop scalable features with Swift and modern iOS technologies, collaborate with product and design teams, contribute to architecture and technical decisions, improve platform reliability and maintainability, mentor engineers, and use experimentation and customer insights to enhance the app experience.

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.

Build and evolve high-performance iOS instrumentation SDKs for mobile observability. Develop features including session tracking, crash reporting, sampling, context propagation, and OpenTelemetry integrations. Own projects end to end, ensure automated testing and backward compatibility, collaborate across engineering and product teams, contribute to open source, mentor teammates, and help shape the mobile observability roadmap.

Build and improve Zopa’s native iOS banking app within the Mobile Platform team. Responsibilities include developing customer-facing features with Swift, improving app performance and reliability, resolving bugs, contributing to shared architecture and developer tooling, and collaborating with Product, Design, Backend, React Native, and other iOS engineers. The role also involves promoting engineering standards, testing, accessibility, observability, and maintainable mobile development practices.

Build and maintain iOS payment experiences for wallet balances, checkout, withdrawals, refunds, seller onboarding, and tax capture. Contribute to migrating payment surfaces from UIKit to SwiftUI, write automated tests, handle complex state and edge cases, and own features end to end. Collaborate with backend engineering, product, design, and senior engineers while supporting globally compliant marketplace payment flows.

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.

Develop and maintain accessible, secure, user-focused iOS applications using Swift. Translate requirements into reliable solutions, write tested and maintainable code, integrate APIs, participate in code reviews and architectural decisions, and contribute to CI/CD. Diagnose defects and performance issues while collaborating with designers, product managers, QA, and developers in an agile multidisciplinary team. Support engineering standards, documentation, knowledge sharing, mentoring, and modern Apple platform practices.

Lead the iOS engineering team and technical architecture for Aave App. Build secure blockchain functionality including wallets, private keys, transaction signing, RPC interactions, gas estimation, and onchain data flows. Establish standards for Swift and UIKit development, testing, observability, performance, release safety, and incident response. Remain hands-on with foundational architecture and security-sensitive features while mentoring engineers and partnering with product, design, backend, protocol, and security teams.

Build and evolve Zopa’s native iOS platform, including shared modules, APIs, architecture, developer tooling, design systems, observability, and CI/CD. Deliver production-quality Swift and SwiftUI code, improve performance and reliability, shape technical standards, and collaborate across engineering, product, design, backend, and Android teams. Coach engineers through pairing, code reviews, technical discussions, and knowledge sharing.

Build and own Nevis’s native iOS and iPadOS app from architecture through App Store release. Collaborate with design, backend, and AI teams to create polished, responsive, secure, accessible, and offline-capable experiences for financial data and streaming AI workflows. Own performance, networking, testing, observability, crash-free quality, provisioning, phased rollouts, and release processes while rapidly prototyping and iterating on product experiences.

Design, build, and maintain high-quality iOS applications using modern Apple technologies. Own features end-to-end, collaborate with product, design, and backend teams, write clean testable code, debug and improve performance, and contribute to architecture and best practices.

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

Build and iterate Plum's iOS app using Swift and iOS SDK. Write robust, well-tested code, ship to the App Store, collaborate with cross-functional squads, mentor junior engineers, and contribute to product-driven mobile features.

Develop and maintain iOS mobile applications and frontend experiences while contributing to backend services powering mobile network management, device control, and AI-driven safeguarding. Collaborate on architecture, scalability, security, and product direction; deploy, optimize, test, and rapidly iterate features across care, schools, and parent products. Engage directly with users and take ownership from concept through production delivery.