Top IoS Developer Jobs in London

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

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 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.

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.

Lead design and implementation of advanced iOS features, architect complex app modules, evolve an in-house Server-Driven UI, maintain mobile CI/CD (GitHub Actions) and App Store workflows, run automated UI testing, collaborate with product/design/engineering, and ensure high standards for mobile engineering and user experience.

The Software Engineer in Test will design and maintain automated UI test frameworks for iOS applications, promote quality practices, and collaborate with various teams to enhance application quality throughout the delivery lifecycle.

Build maintainable, tested native iOS apps in Swift, collaborate with designers, product owners and testers in agile teams. Advocate engineering best practices, perform peer reviews and unit testing, adopt modern iOS frameworks (SwiftUI, Combine, Concurrency), and use AI tools like Claude Code to accelerate delivery.

Design, build and ship high-quality iOS features; collaborate with designers, product managers and engineers; write unit/integration/UI tests; fix bugs and improve app performance; own feature development and delivery in an Agile/Scrum environment.

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.

The Senior Staff Android Engineer will own and evolve the Android platform, lead system design, and mentor engineers to improve mobile architecture and workflows at AlphaSense.

As a Staff iOS Engineer, you'll define architecture, enhance the iOS platform, and mentor engineers, focusing on reliability and AI-driven mobile engineering practices.

Develop and deploy iOS applications in a fast-paced environment, collaborating with product and design teams while ensuring code quality and adherence to App Store guidelines.

As an iOS Developer, you will build and maintain AI-powered iOS applications focusing on performance, reliability, and user trust. Collaborate with engineers to integrate AI features, design UX patterns, and optimize app performance.

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

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.

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.

Join the Decision Experience team to design and deliver high-traffic iOS buyer experiences. Lead architecture and product decisions, mentor engineers, write and maintain automated tests, integrate with backend APIs, and use data-driven experimentation to improve conversion and discovery flows.

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 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.

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 development and improvement of the primary iOS app, implementing pixel-perfect UI, integrating Web3/crypto wallet features, collaborating with product and design, and ensuring quality via testing, analytics, accessibility, A/B testing, and performance optimization.

As a Senior iOS SDK Engineer, you'll design, implement, and optimize core SDK features, maintain integrations with ad networks, and improve SDK usability by collaborating with publishers and product teams.

You will develop an iOS application, optimize it for performance, and collaborate with cross-functional teams, engaging users for feedback.

As a Senior iOS Engineer at Proton, you'll build privacy-focused mobile apps, mentor team members, and work on scalable architecture and user experience.

As a Senior Mobile QA Automation Engineer at Proton, you will conduct manual and automated testing for iOS and Android applications, collaborating with development and support teams to ensure product quality.