iOS Mobile App Developer

Tesco; Slough; Hybrid; GBP 55,000 - 75,000; Full time

Job summary

A leading mobile virtual network operator in Slough seeks an experienced iOS Mobile App Developer. The role involves designing, coding, and implementing solutions for the iOS mobile app. Candidates should have over 5 years of iOS development experience using Swift with a strong grasp of mobile architecture. This position offers excellent benefits, including an annual bonus scheme, generous holiday allowance, flexible working options, and an inclusive workplace culture.

Benefits

Annual bonus scheme of up to 20%

Holiday starting at 25 days

Private medical insurance

Retirement savings plan

Flexible working options

Qualifications

• 5+ years of experience in iOS development.
• Strong understanding of iOS architecture.
• Experience with offline storage and performance tuning.
• Familiarity with cloud messaging APIs.

Responsibilities

• Design and develop native iOS applications.
• Collaborate with teams to define new features.
• Ensure application performance and quality.
• Participate in code reviews and mentor juniors.

Skills

iOS development using Swift

User Interface design with SwiftUI

Problem-solving skills

Communication skills

Teamwork

Education

Degree in Computer Science or equivalent experience

Tools

Git

RESTful APIs

Job description

Tesco Mobile • Slough • Apply by 06-Feb-2026

As an iOS Mobile App Developer you'll sit within the Engineering 'chapter' alongside other Developers and Software / QA Engineers. Tesco Mobile enables customers to use native mobile applications to manage their products and services on both the iOS and Android Platform. The Mobile App squad is comprised of iOS and Android Developers as well as other agile resources such as a Product Owner, BA, QA and others.

You will be responsible for designing, coding, and implementing customised solutions for the Tesco Mobile iOS mobile app. Your expertise will contribute to the success of our organisation by enhancing our mobile app, particularly focusing on new features and custom functionality. You\'ll collaborate with cross-functional teams, including business stakeholders, administrators, and other developers, to deliver high-quality solutions that meet business requirements.

What is in it for you

We\'re all about the little helps. That\'s why we give our wonderful colleagues bags of benefits. Including wellbeing services, an award-winning pension scheme and much, much more, our colleague reward package keeps on giving. And helps make every day a little better for you and your family. These include but are not limited to:

• Annual bonus scheme of up to 20% of base salary
• Holiday starting at 25 days plus a personal day (plus Bank holidays)
• Buy holiday salary sacrifice scheme (for salaried roles)
• Private medical insurance
• Retirement savings plan - save between 4% and 7.5% and Tesco will match your contribution
• Life Assurance - 5 x contractual pay
• 26 weeks maternity and adoption leave (after 1 years' service) at full pay, followed by 13 weeks of Statutory Maternity Pay or Statutory Adoption Pay, we also offer 4 weeks fully paid paternity leave
• The right to request flexible working from your first day with us
• Free 24/7 virtual GP service, Employee Assistance Programme (EAP) for you and your family, free access to a range of experts to support your mental wellbeing
• A Colleague Clubcard for you & a family member (after 3 months of service), giving you access to lots of discounts in-store & online
• Great colleague deals and discounts, saving you money on everyday purchases, eating out and utility bills for the home
• Access to our colleague networks providing a space for colleagues to come together from a range of backgrounds
• Opportunities to get on - take advantage of our ongoing learning opportunities and award-winning training, to help you achieve the job and career you want

To read more about the full range of benefits available for our colleagues, please read the additional information provided by the organization.

Responsibilities

• Designing, developing, and maintaining native iOS applications.
• Collaborating with cross-functional teams to define and deliver new features.
• Ensuring high performance, quality, and responsiveness of applications.
• Identifying and resolving bottlenecks and bugs.
• Staying up to date with new technologies to improve development efficiency.
• Writing clean, maintainable, and efficient code.
• Participating in code reviews and mentoring junior developers.

Qualifications

• Proven experience (5+ years) in iOS development using Swift, including building user interfaces with SwiftUI
• Strong understanding of iOS SDKs, mobile architecture (MVVM/MVP), and interface guidelines.
• Experience with RESTful APIs, offline storage, threading, and performance tuning.
• Familiarity with cloud messaging APIs and push notifications.
• Proficient in Git and unit testing.
• Excellent problem-solving, communication, and teamwork skills.
• A degree in Computer Science or equivalent experience.
• Bonus: Experience or flexibility with cross-platform development (e.g., Kotlin, Android, or frameworks like Flutter/React Native) is highly advantageous and welcomed.

About us

A 50-50 joint venture between Tesco and VMO2 that was established back in 2003, Tesco Mobile has gone from strength to strength as we\'ve launched into new services and markets. With more than 5 million customers, we\'re the largest mobile virtual network operator in the UK. We\'re proud to have an inclusive culture that\'s uniquely Tesco Mobile, with a strong sense of community, plus all the benefits of working for one of the shareholders.

We care for human connection and we keep our customers at the heart of everything we do, which is why we\'ve embraced the Agile way of working. Agile is more than just a methodology - it\'s a liberating journey that puts customers and purpose first. It empowers us to self-organise, collaborate, co-create and rapidly inspect and adapt everything we do - allowing us to respond at pace to our customers\' needs. It encourages variety of thought and enables us to thrive, both individually and collectively.

We are proud to have an inclusive culture at Tesco where everyone truly feels able to be themselves. At Tesco, we not only celebrate diversity, but recognise the value and opportunity it brings. We\'re committed to creating a workplace where differences are valued, and make sure that all colleagues are given the same opportunities. We\'re proud to have been accredited Disability Confident Leader and we\'re committed to providing a fully inclusive and accessible recruitment process. For further information on the accessibility support we can offer, please read the information provided by the organization.

We are a big business and we can offer a range of diverse full-time & part-time working patterns across our many business areas, which means that we can find something that works for you. We work in a blended pattern - combining office and remote working. If you are applying internally, please speak to the Hiring Manager about how this can work for you - Everyone is welcome at Tesco.