Senior Software Java Engineer - Customer API


Company:	Tesco
Salary:	Competitive
Hours:	Part-time
Location:	Welwyn Garden City, AL7 1GA
Job type:	Permanent
Posting date:	28 Aug 2026
Closing date:	1 Oct 2026

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Summary

About the role

Senior Software Development Engineers (SDEs) are the creative minds developing the software applications that make life easier for customers. Responsible for the entire development and support process for a software programme. Your applications make previously complex tasks simple with the impact ranging from saving time, effort or money to re-defining normal.

You will be responsible for

• While specific responsibilities will evolve with Tesco’s business needs, the role’s key areas of impact include:

• Developing high-quality software solutions, with proficiency in Java (Spring Boot or other frameworks).

• Working with Microsoft Azure and Terraform (Infrastructure as Code) or demonstrating a willingness to learn.

• Implementing and advocating CI/CD best practices for seamless software delivery.

• Maintaining high-quality documentation to support development processes and system design.

• Utilize data-driven decision-making, balancing short-term and long-term goals, and accepting appropriate trade-offs.

• Apply Tesco architectural standards and best practices, including security-first thinking and use of tools for vulnerability management and secure coding.

• Ensuring solutions are robust, scalable, and efficient.

• Taking ownership of systems, driving reliability, maintainability, and performance.

• Mentoring and supporting fellow engineers, fostering a culture of growth and collaboration.

• Automating workflows and building tools/scripts to enhance efficiency.

You will need

Technology stack we are using:

• Experience in delivering Java (or any other JVM language), good to have: JS, TypeScript

• Spring Boot or Micronaut

• Azure, Terraform for infrastructure automation

• Microservices

• SQL (PostgreSQL), NoSQL databases, e.g. Cosmos DB or Couch DB

• Splunk, xMatters, New Relic etc.

• GitHub

• Zendesk & JIRA

Requirements:

• Solid experience in delivering Java or other JVM languages; familiarity with JS/TypeScript is a plus.

• Experience with cloud platforms (Azure, AWS) and infrastructure automation (Terraform).

• Good understanding of SQL (PostgreSQL) and NoSQL databases (e.g., Cosmos DB).

• Familiarity with monitoring and alerting tools (Splunk, xMatters, New Relic).

• Experience working with Agile methodologies (Scrum/Kanban)

• Good English communication skills

• Experience in system design

• Experience in taking ownership of a project and leading a team from technical/ project perspective

• Proactive attitude

What’s 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. [1] 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 (12 months service required at the qualifying date) 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.

• This information is a shortened summary, refer to our policies for full details.

References

Visible links

1. https://www.tesco-careers.com/explore-our-world/colleague-benefits/

About Us

You might know us as a supermarket, technology company or even for our award-winning mobile network. Truth is, we’re all of those things, and much more. Our colleagues work with one goal in mind, helping to make every day a little better for our customers, colleagues and communities all over the world. No two customers are the same, neither are our colleagues.

At Tesco, we champion a balance that lets you thrive both in and out of work. Spend 60% of your week collaborating with colleagues at our office locations or local sites and the rest remotely. Whether you’re just kicking off your career, juggling passions, or navigating big life events, we’re here to support you. We always welcome a conversation about flexible working, so talk to us throughout your application about how we can support.

We’re proud to be an accredited Disability Confident Leader, where everyone’s welcome. That’s why we commit to providing a fully inclusive and accessible recruitment process. If you need support with your application, click here for more information. And if you’re interested in joining our team but don’t tick every box, don’t let that hold you back from applying. >

About us

Tesco has become a market leader by doing the little things that really matter for our customers and colleagues.

It’s part of what makes Tesco such a great place to work, and we’re proud to have been accredited as one of Britain’s Top Employers again this year.

We're the UK's number one retailer and we pride ourselves on offering a great shopping experience. We are passionate about our food, merchandise and services and will always try to get things right for our customers.

But did you know we also offer great job opportunities? With stores, distribution centres and offices across the UK, and a vast variety of roles, we are always looking for people who have a hunger to work with customers and colleagues across our exciting business.

We believe in treating each other with respect and giving everyone an equal opportunity to get on. It's our people that make the difference every day – helping us make a difference for our customers

Should you be successful in your application, your offer will be subject to and conditional upon you providing your bank account details before your agreed start date.

For more information about us please visit www.tescoplc.com

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