Senior Java Engineer - Customer Fulfilment

WeAreTechWomen; Welwyn Garden City; On-site; GBP 45,000 - 70,000; Full time

Job summary

A leading UK retailer is seeking Software Development Engineers in Welwyn Garden City to develop a next-generation fulfilment platform. The role involves creating scalable Java applications to enhance operations and collaborating with cross-functional teams. Ideal candidates are skilled in Java, Agile methodologies, and have experience in full-stack development. Join a dynamic team that values diversity and innovation.

Benefits

Annual bonus scheme of up to 20%

25 days of holiday plus personal days

Private medical insurance

Generous maternity and paternity leave

24/7 virtual GP service

Qualifications

• Previous experience in product development using agile methodologies.
• Hands-on experience with reliable full stack Java applications.
• Experience in globally distributed software engineering teams is a plus.

Responsibilities

• Develop robust, scalable, and efficient applications for warehouse operations.
• Collaborate across teams for system efficiency and reliability.
• Write clean, maintainable code adhering to best practices.

Skills

Java

Spring Boot

Agile methodologies

Microservices

CI/CD

Cloud (Azure)

Tools

Docker

PostgreSQL

Kafka

Couchbase

Job description

Tesco UK • Welwyn Garden City • Full-Time • Permanent • Apply by 01-Dec-2025

We are in the process of building and rolling out our next generation, dynamic, scalable, and resilient Fulfilment platform for Tesco, to address both manual, and robotic powered automate fulfilment operations, across all the customer order fulfilment locations. This highly optimized and continuously improving fulfilment platform is designed to be used to fulfil all product categories - Grocery /GM and Fashion, of Customer Orders.

This platform, Fulfilment Point System (FPS), enables all the customer order fulfilment centres across different geographies to pick, marshal and dispatch customer orders on one hand and manage the site workflow through a real-time visualisation and intervention tool, on the other hand.

Ours is a globally distributed, full stack java tech team and our building blocks consist of a set of Microservice components, backend APIs, Rich UI, robust Eventing Platform and Data layer components utilising a wide range of modern technologies including:

• Java, RxJava, SpringBoot
• Kafka, PostgreSQL and Couchbase
• Docker, Kubernetes, Jenkins, Azure DevOps, Splunk, AppDynamics, New Relic
• Azure Cloud

We are responsible for the software throughout the lifecycle. We maintain a DevOps culture employing continuous integration and delivery, supporting our code through to production and beyond.

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

We are seeking highly skilled Software Development Engineers (SDEs) for a green field project to drive the design, development and implementation of software solution for next generation customer fulfilment system. As a key member of our engineering team, you will develop robust, scalable and efficient java-based applications to optimise warehouse operations and drive operational success. You will directly contribute to evolving product, reducing cost and increasing profitability.

Design and Develop

Architect and build high-performance applications.

System Optimisation

Collaborate with cross functional teams to enhance system efficiency, scalability and reliability for mission critical applications.

Integration

Develop APIs and microservices to integrated with enterprise API and third-party platforms.

Code Quality

Write clean, maintainable and well documented code, adhere to best practices and coding standards.

Troubleshooting

Diagnose and resolve complex technical issues in real-time to ensure un-interrupted operations.

Mentorship

guide junior engineers and foster culture of continuous improvement.

Innovation & Collaboration

Stay ahead of industry, work closely with hardware, data scientists and operation team.

You will need

Experience relevant for this job

• Previous experience of having done product development using agile methodologies
• Hands-on experience of building and supporting reliable and operationally robust full stack and distributed Java applications / products
• Any previous experience of having contributed in a globally distributed software engineering teams would be a big plus.

Tech Skills

• Programming
  • Demonstrate in depth knowledge of IDE, language, and toolset in language of choice.
  • Implement critical path components in a large or complex or project.
  • Demonstrate excellent understanding of language & framework and a good working knowledge of the abstraction layer underneath
  • Comfortably test drive any feature/comfortable with TDD cycle
  • Comfortably debug/find complex problems
• Design
  • Identify and apply appropriate design patterns to problems
  • Understand Idempotence
  • Actively practice the boy scout principle, leaves design, code in a better state than when arrived
  • Understand importance of domain model and can coherently model a problem domain within a given context
  • Understand design patterns such as CQRS and eventual consist
  • Understand how to design for performance at all levels
• Development Practice
  • Automate everything by default
  • Build a CI/CD pipeline
• Tech Stack Specialization
  • Java, Spring boot
  • Kafka
  • Postgres
  • Couchbase
  • CI/CD: Azure pipelines / Git Actions.
  • Cloud: Azure

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'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.