Contract Full Stack Engineer at Tenth Revolution Group, London Area, £350 per day

Contract Full Stack Java Developer (React Focus) – Financial Services - London

Contract Length: 12 Months

Rate: £350 per day

IR35 Status: Outside IR35

Overview

We are seeking an experienced Full Stack Developer to join a London-based financial services organisation on a 12-month contract. This role will have a strong focus on React frontend development, while also contributing to backend services built using Java 21+, Spring Boot, and Microservices architecture.

You will be working within a cloud-native, event-driven environment, delivering responsive trading and financial applications used in a fast-paced, regulated setting.

This is a hands-on role suited to engineers who are confident owning frontend delivery while collaborating on robust backend services.

Key Responsibilities

• Lead development of modern, high-performance React applications
• Build responsive, reusable UI components aligned with financial product requirements
• Integrate frontend applications with backend microservices
• Contribute to backend development using Java 21+ and Spring Boot
• Work with Kafka-based event streaming architectures
• Develop and maintain APIs within a microservices environment
• Build and maintain AWS or Azure CI/CD pipelines
• Ensure applications are secure, scalable, and production-ready
• Write robust unit and integration tests across frontend and backend
• Collaborate within Agile squads across the full SDLC
• Produce clear technical documentation

Core Technical Requirements

• Strong commercial experience with React (very strong proficiency required)
• Experience building full stack applications in regulated or enterprise environments
• Solid experience with Java (21+) and Spring Boot microservices
• Experience integrating with Kafka or other streaming technologies
• Cloud experience with AWS or Azure
• Experience working with relational databases (Oracle or similar)
• Strong understanding of CI/CD, DevOps practices, and Agile delivery

Preferred Experience

• Financial services domain knowledge (markets, instruments, trade lifecycle)
• Strong SQL capability
• Experience building highly interactive data-driven UIs
• Exposure to performance optimisation in trading or data-heavy applications

Background & Experience

• Bachelor’s degree in Computer Science or related discipline
• 10+ years of IT industry experience
• Experience working within Agile methodologies
• Strong analytical mindset and delivery-focused attitude
• Proven ability to collaborate within high-performing teams