React Developer £550 - £625 - Inside IR35 London Hybrid 1/2 days per week 6 months initially, with high likelyhood of extension We’re recruiting an experienced Contract Frontend UI Software Engineer to support a client in building, extending, and maintaining a modern web platform. This role will suit someone who is comfortable stepping into an existing environment, delivering high-quality UI functionality, and working autonomously within a cross-functional delivery team. Key responsibilities Collaborate with a cross-functional team of engineers, QA, and product managers Design, develop, and maintain frontend functionality and services Deliver new features and enhancements across a modern web platform Work with technologies including React, TypeScript, Webpack, REST APIs, JSON, Docker, and Ansible Prototype solutions, analyse requirements, and contribute to technical design Produce clean, maintainable, and well-tested code aligned with best practices Participate in code and technical design reviews Take ownership of deliverables and contribute independently within the teamRequired experience Bachelor’s degree in Computer Science or a related engineering discipline 6 years of commercial web UI development experience using modern frameworks (React preferred) Strong understanding of cross-browser development and responsive design Hands-on experience with Git, version control workflows, and development environment setup Experience integrating with APIs and microservices Exposure to multiple delivery methodologies including Agile, Scrum, Waterfall, and SAFe Good understanding of QA standards, testing practices, and technical documentation Strong communication skills and ability to work effectively with technical and business stakeholders