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# Full Stack Engineer (Java + React)

- **Company:** Harnham
- **Location:** London, UK
- **Salary:** £75,000.0 - £85,000.0
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Java (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, Amazon Web Services, Software Construction, Software Engineering, TypeScript, Web Platforms, ReactJS, Spring-boot, Backend, Kotlin, Event Driven Architecture, Apache Kafka, Front End Software Development, Docker, Microservices
- **Published:** October 6, 2026
- **Apply:** https://www.reed.co.uk/jobs/full-stack-engineer-java--react/57424562

## About the Role

* Strong commercial experience with React
 * Strong commercial experience with TypeScript
 * Commercial backend development experience with Java
 * Experience working with Spring / Spring Boot
 * Hands-on experience using AI-assisted development tools as part of the software development lifecycle
 * Experience developing and consuming APIs
 * Understanding of software engineering best practices, testing, and clean code principles
 * Experience working within Agile environments

Nice to Have

 * Kotlin experience
 * AWS experience
 * Docker and Kubernetes
 * Microservices architecture
 * Event-driven systems (Kafka or similar)
 * GraphQL

## Description

They're looking for a Full Stack Engineer to join a highly collaborative engineering team building and enhancing a modern web platform. This role is approximately 65% Frontend and 35% Backend, making it ideal for engineers who enjoy creating outstanding user experiences while remaining hands-on across the full stack.

The Role

You'll join a cross-functional squad responsible for delivering new features, improving platform performance, and helping shape technical decisions across the product.

The role has a strong frontend focus, but you'll also contribute to backend services and APIs, working within a modern cloud-native environment.

A key aspect of the engineering culture is the use of AI-assisted development tools, so candidates must already be comfortable incorporating AI into their daily workflow for coding, testing, and productivity.