Engineer - iOS

Salary: Competitive Plus Benefits
Location: Holborn Store Support Centre and Home, London, EC1N 2HT
Contract type: Permanent
Business area: Sainsbury's Tech
Closing date: 17 June 2025
Requisition ID:

We'd all like amazing work to do, and real work-life balance. That's waiting for you at Sainsbury's. Think about the scale it takes for us to feed the nation. The level of data, transactions and variety it involves. Then you'll realise that ours is a modern software engineering environment because it has to be. We've made serious investment into a Tech Academy and into setting standards and principles. We iterate, learn, experiment and push ways of working such as Agile, Scrum and XP. So you can look forward to awesome opportunities in everything from AI to reusable tech.

IOS Engineer

We're a multi-channel, multi-brand business serving millions of customers a day, with the UK's largest loyalty scheme and an ever-evolving set of digital platforms. All of this equals over 1.2 billion transactions each year, presenting a volume, depth and complexity of data that few can match.

We use a variety of tech here and you need to be willing to pick up new tools and techniques. We'd also like you to be yourself - analytical, curious and unafraid to challenge the status quo.You'll come with customer-centric mindset and a passion for finding creative ways to solve problems, alongside fellow engineers as a progressive member of the engineering community.

In an inclusive, agile environment, you'll have the space to be curious, to experiment, and to solve real-world challenges. And you'll get to see your creations in the hands of millions of people across the UK.

As an Engineer (iOS), you'll be part of one of our Engineering teams, applying architectural and engineering principles to define and deliver technology that will better customer experiences, improve efficiency and reduce business costs, helping us to lower prices. With your technical craft, curiosity and experimentation, you'll use judgement to apply specific techniques to deliver outcomes that support our customers.

More about the role:

You'll be part of the design and development of the large-scale Groceries Online iOS app, striving for high quality, highly performant and testable code

You'll develop within a codebase utilising a mix of technologies such as such as Swift with UIKit, SwiftUI and testing framework XCTest

You'll work in a cross-platform team, working on our iOS app while collaborating closely with Android developers to ensure feature consistency

You'll have opportunities to work on other technologies, including KMP (Kotlin Multiplatform) and server-side development

You'll contribute to the entire product development lifecycle, from roadmap, to delivery, to potential decommissioning too

You'll be part of a collaborative team that highly values empathy and team spirit

More about you:

You have proven experience developing features on a commercial iOS application within a team environment

You are adept at writing quality, testable Swift code

Strong knowledge of architectural patterns (MVI/MVVM, DI, clean architecture) and modern iOS development practices

Have a keen interest in testing, having experience writing and maintaining unit and UI test suites(including Appium)

Experience and working knowledge of connecting to multiple varied API services, asynchronous networking in iOS, solid understanding of API design patterns and practices

You're driven and constantly striving to improve your knowledge. You keep up to date with industry trends and emerging tech.

You have a passion for delivering solutions to customers, owning the whole Software Development Lifecycle

You're empathetic and work well with others, and you're highly collaborative in your ways of working

You have experience with agile delivery methodologies.

We are committed to being a truly inclusive retailer, so you'll be welcomed whoever you are and wherever you work. Around here, there's always the chance to try something new-whether that's as part of an evolving team or somewhere else across the business - and we take development seriously and promise to support you. We also recognise and celebrate colleagues when they go the extra mile and, where possible, offer flexible working. When you join our team, we'll also offer you an amazing range of benefits. Here are some of them:

Starting off with colleague discount, you'll be able to get 10% off at Sainsbury's, Argos, TU and Habitat after 4 weeks. This increases to 15% off at Sainsbury's every Friday and Saturday and 15% off at Argos every pay day. We've also got you covered for your future with our pensions scheme and life cover. You'll also be able to share in our success as you may be eligible for a performance-related bonus of up to 10% of salary, depending on how we perform.

Your wellbeing is important to us too. You'll receive an annual holiday allowance, and you can buy additional holiday. We also offer other benefits that will help your money go further such as season ticket loans, cycle to work scheme, health cash plans, pay advance (where you can access some of your pay before pay day) as well access to a great range of discounts from hundreds of other retailers. And if you ever need it there is also an employee assistance programme.

Moments that matter are as important to us as they are to you which is why we give up to 26 weeks' pay for maternity or adoption leave and up to 4 weeks' pay for paternity leave.

Please see for a range of our benefits (note, length of service and eligibility criteria may apply).