Senior Java Engineer - Quote API

Tesco; Welwyn Garden City; Hybrid; GBP 40,000 - 60,000; Full time

Job summary

A leading retail company in Welwyn Garden City is seeking a skilled Java Developer to join their hybrid team. This role involves designing robust APIs and requires strong experience with Java 8+, cloud platforms, and both SQL and NoSQL databases. The ideal candidate will excel in an Agile environment and have a passion for developing scalable systems. Competitive benefits include an annual bonus scheme and extensive leave options.

Benefits

Annual bonus scheme up to 20%

Holiday starting at 25 days plus personal day

Private medical insurance

26 weeks maternity leave at full pay

Free 24/7 virtual GP service

Qualifications

• Strong experience with Java 8+.
• Hands-on experience with cloud platforms (Azure, AWS).
• Proficiency with SQL and NoSQL databases.
• Proven ability to scale systems effectively.
• Familiarity with Agile methodologies (Scrum, Kanban, Waterfall).
• Exposure to reactive programming paradigms.

Responsibilities

• Design and implement end-to-end systems using JVM expertise.
• Translate product requirements into maintainable code.
• Write test-driven features following TDD and BDD.
• Apply SOLID principles to build scalable software.
• Collaborate with stakeholders to refine features.
• Support production systems and resolve incidents.
• Mentor and support fellow engineers.

Skills

Java 8+

Cloud platforms (Azure, AWS)

SQL databases

NoSQL databases

Agile methodologies

Reactive programming

eCommerce

Search systems

Tools

Vert.x

RxJava

Groovy

Couchbase

Kafka

CI/CD pipeline

Job description

Overview

Tesco UK • Welwyn Garden City • Hybrid • Full-Time • Permanent • Apply by 05-Nov-2025

Join the team behind Price Service - a mission-critical HTTP API powering pricing and promotions across all of Tesco's channels. From tills to websites and everything in between, our work touches the lives of over 28 million UK shoppers every week, with global reach on the horizon.

We're building a robust, internet-facing API that runs both in stores and in the cloud, designed to support future innovation at scale. This means solving complex distributed systems challenges, ensuring high availability, and optimizing performance. Concepts like the CAP theorem aren't just theory here - theyre part of our daily engineering conversations.

Our stack includes Java, Vert.x, RxJava, Groovy, Couchbase, and Kafka, running on Azure with a fully automated CI/CD pipeline. We follow Agile principles, adapting Kanban and other methodologies to fit the team's needs. Collaboration is at the heart of our culture - pair programming is common, and all code is reviewed via GitHub.

Benefits

What is in it for you

• 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 year's 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
• 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

Responsibilities

• Design and implement end-to-end systems using your deep JVM and java ecosystem expertise.
• Translate product requirements into well-structured, maintainable code.
• Write test-driven features and follow the TDD and BDD cycle.
• Apply SOLID principles and cohesive design to build scalable software.
• Collaborate with product stakeholders to shape and refine features.
• Support production systems, resolve incidents, and conduct root cause analysis.
• Mentor and support fellow engineers, fostering a culture of continuous learning.
• Share knowledge across the wider engineering community.
• Prototype and evaluate new tools and technologies.

Requirements

• Strong experience with Java 8+.
• Hands-on experience with cloud platforms (Azure, AWS, etc.).
• Proficiency with both SQL and NoSQL databases.
• Proven ability to scale systems effectively.
• Familiarity with Agile methodologies (Scrum, Kanban, Waterfall).
• Exposure to reactive programming paradigms.
• Bonus: Experience with eCommerce or search systems.

About us

Our vision at Tesco is to become every customer's favourite way to shop, whether they are at home or out on the move. Our core purpose is 'Serving our customers, communities and planet a little better every day'. Serving means more than a transactional relationship with our customers. It means acting as a responsible and sustainable business for all stakeholders, for the communities we are part of and for the planet.

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 are 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 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 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.