Senior iOS Engineer

• Experience building iOS applications using Swift and the core iOS frameworks

• Comfortable working with Xcode, Interface Builder and Auto Layout to create responsive user interfaces

• Understanding of Apple’s Human Interface Guidelines and platform design principles

• Knowledge of common software design patterns and architecture concepts

• An interest in writing clear, maintainable code and improving existing codebases

• Experience building apps that work well across iPhone and iPad screen sizes

• Familiarity with unit testing and a willingness to contribute to test coverage

• Experience with UI automation tools, or a desire to learn them

Were looking for a Senior iOS Engineer to join our Customer Experience team and help shape the future of one of the UKs most recognisable retail apps.

At ASOS, youll build experiences used by more than 8 million active customers worldwide, delivering features that directly impact how millions of people discover, shop and engage with fashion every day. Our iPhone and iPad apps maintain excellent App Store ratings and are built using modern iOS technologies, including the latest versions of Swift.

This is an opportunity to work at genuine scale, solving complex engineering challenges while collaborating with talented product, design and engineering teams. Youll have the freedom to influence technical decisions, contribute to the evolution of our platform, and help create experiences customers genuinely love.

What youll be doing

• Building and delivering high-quality customer experiences used by millions of customers globally.

• Developing features using modern iOS technologies and engineering best practices, balancing quality, performance and scalability.

• Partnering closely with Product, Design and fellow Engineers to shape solutions from idea through to launch.

• Contributing to technical discussions, architectural decisions and continuous improvements across our iOS platform.

• Taking ownership of features and services, helping ensure reliability, maintainability and a seamless customer experience.

• Mentoring and supporting other engineers, sharing knowledge and helping raise engineering standards across the team.

• Using data, experimentation and customer insights to inform decisions and continuously improve the app experience.

Why this role is exciting

• Your work will reach millions of customers around the world.

• Youll join a high-performing mobile engineering team with a strong focus on quality and craftsmanship.

• Youll work with modern technologies and contribute to the future direction of our iOS platform.

• Youll have real influence over technical decisions, product outcomes and customer experience.

• Youll help shape the next generation of shopping experiences for one of the worlds leading fashion destinations.