Senior iOS Engineer

We’re ASOS, the online retailer for fashion lovers all around the world.
We exist to give our customers the confidence to be whoever they want to be, and that goes for our people too. At ASOS, you’re free to be your true self without judgement, and channel your creativity into a platform used by millions.
But how are we showing up? We’re proud members of Inclusive Companies, are Disability Confident Committed and have signed the Business in the Community Race at Work Charter and we placed 8th in the Inclusive Top 50 Companies Employer list.
Everyone needs some help showing up as their best self. Let our Talent team know if you need any adjustments throughout the process in whatever way works best for you.
We’re looking for a Senior iOS Engineer to join our Customer Experience team and help continue the success of our iPhone and iPad apps. This role is about delivering high‑quality, thoughtfully built experiences at scale, and working collaboratively to make products that customers genuinely value.
Our app is used by over 8 million active users globally, maintains an excellent App Store rating, and is built using modern iOS technologies including the latest versions of Swift. You’ll be contributing to a mature, well‑supported platform where quality, reliability and user experience matter.
What you’ll be doing
Delivering high‑quality features and improvements, following iOS best practices and platform guidelines
Working closely with designers to implement clear, accessible and well‑crafted user interfaces
Collaborating within an agile, cross‑functional team, sharing responsibility for team outcomes
Taking ownership of your work while contributing ideas and improvements across the codebase
Supporting code quality, maintainability and testing to ensure a reliable user experience
About you
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
BeneFITS’
Employee discount (hello ASOS discount!)
Employee sample sales
25 days paid annual leave + an extra celebration day for a special moment
Discretionary bonus scheme
Private medical care scheme
Flexible benefits allowance - which you can choose to take as extra cash, or use towards other benefits
Opportunity for personalised learning and in-the-moment experiences that enable you to thrive and excel in your role