Senior Software Java Engineer - Customer API

Tesco Technology; Welwyn Garden City; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Annual bonus up to 20% of base salary

Holiday 25 days + personal day + Bank+

Private medical insurance

26 weeks maternity/adoption leave + 6w

24/7 virtual GP service

Employee Assistance Programme (EAP)

Flexible working options

Job summary

Tesco Technology is seeking Senior Software Development Engineers to design and deliver robust Java-based software in a hybrid work model at Welwyn Garden City, UK. You will own the full development lifecycle, implement scalable architectures, and drive best practices across CI/CD, security, and observability.

You will collaborate with Azure, Terraform, and microservices ecosystems while mentoring peers and shaping performance improvements.

Qualifications

• Solid experience delivering Java or JVM languages.
• Familiarity with JavaScript/TypeScript is a plus.
• Experience with cloud platforms (Azure) and infrastructure automation (Terraform).
• Knowledge of microservices architectures and SQL/NoSQL databases.

Responsibilities

• Develop high-quality software solutions in Java with Spring Boot or similar frameworks.
• Contribute to Azure-based infrastructure and IaC (Terraform).
• Implement and advocate CI/CD best practices for reliable delivery.
• Maintain documentation and design artifacts for systems and processes.
• Mentor engineers and support team growth.
• Automate workflows and build tools to improve efficiency.

Skills

Java & JVM

Spring Boot

Azure

Terraform

Microservices

SQL & NoSQL

CI/CD

Agile (Scrum/Kanban)

English communication

Tools

GitHub

Jira

Zendesk

Job description

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.

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

Whats 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.

• 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.

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, and if you're interested in joining our team but don't tick every box, don't let that hold you back from applying.