Java Web Software Engineer Spring React London

A leading IT Consultancy is seeking a Java Web Software Engineer on a long term contract basis.

You will be needed onsite in London 3 times a week, please DO NOT APPLY unless you can commit to this working arrangement.

The Java Web Software Engineer will be responsible for the maintenance and enhancement of existing Back End and web-based applications, and contributing to the evolution of our trading platform and web user interfaces.

Experience required:

• Strong Java fundamentals (Java 21 preferred) including core concepts (collections, concurrency, memory management).
• Solid experience with Spring Framework (Spring 4+) and Spring Boot 3.x.
• Experience building and consuming REST APIs.
• Good knowledge of React (version 17) and integration with Back End services.
• Strong understanding of web application architecture and Client Server communication.
• Experience with SQL and relational databases (eg PostgreSQL).
• Proficiency with version control (Git) and build tools (Maven/Gradle).
• Strong focus on clean code, unit testing, and code reviews.
• Familiar with Agile development practices.
• Comfortable working in Linux/Unix environments.
• 4-8+ years of software engineering experience.

Role responsibilities and key accountabilities:

• Contributes to design, development, and implementation of Back End services and web applications.
• Writes clean, maintainable, and well-tested code following established engineering practices.
• Participates in technical design discussions and collaborates with senior engineers and architects.
• Works closely with Front End developers to integrate Back End services with UI components.
• Supports troubleshooting, debugging, and performance optimization of applications.
• Breaks down user stories into technical tasks and delivers within agreed timelines.
• Collaborates effectively in Agile teams with product owners, QA, and other developers.
• Maintains and improves existing systems while ensuring stability and reliability.
• Builds positive relationships within the team and contributes to a collaborative environment.
• Communicates technical concepts clearly to both technical and non-technical stakeholders.
• Continuously develops technical expertise and stays up to date with modern technologies and frameworks.