Hertfordshire

Lead Java Developer

Posted on Tuesday, 7th July 2026

Retail and Wholesale
Hertfordshire
£450 - 500 per day
Contract

Senior / Lead Software Development Engineer (Java) – o/s IR35 – Hybrid (2 dpw in office)

A large retailer urgently seeks an experienced Senior Software Development Engineer to take a lead role in the design, development and support of scalable, cloud-native Java applications

Working in an Agile, DevOps environment, you’ll build microservices, APIs and event-driven solutions while collaborating with engineers, data scientists and operations teams to deliver high-quality software.

The role is outside IR35 and requires 2 days per week in the office.

Responsibilities include:

  • Design and develop scalable Java applications and microservices
  • Build and maintain cloud-native solutions using Azure
  • Improve system performance, reliability and scalability
  • Develop APIs and event-driven services with Kafka
  • Mentor engineers and promote engineering best practices
  • Support software throughout its full lifecycle in a CI/CD environment

Essential Experience

  • Experience of designing and developing real time high transaction system
  • 10+ years experience with Java, RxJava and Spring Boot
  • Experience building distributed, microservices-based applications
  • Strong knowledge and experience of Kafka, PostgreSQL and Couchbase
  • Experience with Azure, Kubernetes, Docker and CI/CD pipelines
  • Agile delivery experience and a passion for clean, maintainable code

This is a great opportunity to work with a strong team of tech professionals on a greenfield project. For more information and full JD please apply online.

 

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