API Developer

Tesco; Manchester; Hybrid; GBP 50,000 - 70,000; Full time

Job summary

A leading mobile operator in the UK is seeking an API Gateway Developer to design, develop, and maintain API solutions using Apigee Edge. Responsibilities include creating secure, scalable APIs and collaborating with various stakeholders. The ideal candidate will have experience in API design, security, and cloud platforms. This role offers an inclusive work environment and a wide range of employee benefits, including an annual bonus, holiday allowances, and private medical insurance.

Benefits

Annual bonus scheme of up to 20% of base salary

Holiday starting at 25 days plus a personal day

Private medical insurance

Free 24/7 virtual GP service

Employee Assistance Programme

Qualifications

• Proven experience designing and developing APIs on Apigee Edge.
• Strong understanding of RESTful architecture and web services.
• Experience implementing API security, authentication, and authorization.

Responsibilities

• Design, develop, and implement secure RESTful APIs on the Apigee Edge platform.
• Partner with internal and external teams to integrate APIs across applications and services.
• Produce clear API documentation, including specs, usage guidelines, and troubleshooting steps.

Skills

API design principles

RESTful architecture

JavaScript

Python

Java

AWS

Azure

Google Cloud

DynamoDB

SOAP services

Education

Degree in Computer Science or Information Technology

Tools

Apigee Edge

Docker

Kubernetes

MuleSoft

Job description

Tesco Mobile • Slough or Manchester • Permanent • Apply by 28-Feb-2026

At Tesco Mobile, everyone's welcome. We're committed to creating an inclusive environment where people feel supported, empowered, and able to contribute their best. If you're passionate about APIs, modern engineering, and building secure, scalable digital ecosystems, this could be the role for you.

As an API Gateway Developer, you will play a key role in designing, developing, and maintaining API solutions on the Apigee Edge platform. You'll work within the Tesco Mobile Engineering team— a diverse and cross‑functional group responsible for both building and operating critical digital services.

You'll collaborate with engineers, architects, and other stakeholders to create APIs that are secure, scalable, reliable, and aligned with industry best practice. Working as part of the API Chapter, you'll initially join the central APIG squad, which is responsible for development, security, and operations of the API platform. As you grow, you'll have the opportunity to rotate into other squads to deliver strategic outcomes.

Your work will help ensure seamless integration across systems and services, enabling high‑quality experiences for our customers.

What is in it for you

We're all about the little helps. That's why we make sure our Tesco colleague benefits package takes care of you - both in and out of work. Click Here to find out more!

• Annual bonus scheme of up to 20% of base salary
• Holiday starting at 25 days plus a personal day (plus Bank holidays)
• Private medical insurance
• 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 6 weeks fully paid paternity leave
• 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

You will be responsible for

API Design, Development & Security

• Design, develop, and implement secure RESTful APIs on the Apigee Edge platform.
• Write reusable, testable, and efficient code following shared engineering standards.
• Configure and customise policies, proxies, and components to meet project needs.
• Implement robust security controls, authentication, and authorisation mechanisms.

• Partner with internal and external teams to integrate APIs across applications and services.
• Troubleshoot and resolve integration issues to ensure smooth system communication.
• Implement monitoring, logging, and performance tracking for API health and optimisation.
• Conduct regular performance assessments and apply enhancements across the API ecosystem.

Documentation

• Produce clear API documentation, including specs, usage guidelines, and troubleshooting steps.
• Maintain up‑to‑date documentation to support collaboration across engineering and business teams.

Cross‑Functional Collaboration

• Work closely with architects, developers, QA, and business stakeholders throughout the SDLC.
• Communicate effectively to understand business needs and translate them into technical solutions.

Skills & Experience

• Degree in Computer Science, Information Technology, or equivalent experience.
• Proven experience designing and developing APIs on Apigee Edge.
• Strong understanding of RESTful architecture, API design principles, and web services.
• Proficiency in JavaScript, Python, or Java.
• Experience implementing API security, authentication, and authorisation.
• Familiarity with cloud platforms such as AWS, Azure, or Google Cloud.
• Excellent troubleshooting, problem‑solving, and communication skills.
• Expertise in designing DynamoDB tables for scale and performance.
• Experience designing, implementing, and optimising SOAP services.
• Strong understanding of HTTP optimisation, caching strategies, and advanced HTTP features.

Preferred Skills

• Apigee Edge certification.
• Experience working with CI/CD pipelines.
• Knowledge of containerisation and orchestration technologies (Docker, Kubernetes).
• Experience with MuleSoft.

If you're excited about working in a modern engineering culture, building high‑impact APIs, and contributing to a platform used across a large and growing customer base, we'd love to hear from you.

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 click here.

We're 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 more blended pattern - combining office and remote working. Our offices will continue to be where we connect, collaborate and innovate. If you are applying internally, please speak to the Hiring Manager about how this can work for you - Everyone is welcome at Tesco.