Lead Full-Stack Developer

Lead Full Stack Developer Rate: Up to 650/day (Outside IR35) Duration: 6 months initially Location: Hybrid - Milton Keynes / Remote Clearance: SC ClearedOverview An exciting opportunity for a Lead Full Stack Developer to join a small, high-performing tech company supporting a major UK government programme. You''ll play a key role in the development and evolution of a cutting-edge, AI-enabled digital service used across multiple government departments. This role combines hands-on development with technical leadership, working closely with architects, product stakeholders, and client teams to deliver secure, scalable software solutions.Responsibilities Front EndDesign and build modern, responsive user interfacesDevelop using React, TypeScript, JavaScript, HTML, CSSDrive strong UX and cross-browser compatibilityBack EndDesign and develop APIs and servicesBuild server-side logic using Java (Spring Boot)Contribute to overall application architectureData and DevOpsDesign and maintain relational databases (PostgreSQL preferred)Implement CI/CD pipelines (e.g. GitHub Actions, Jenkins)Deploy and operate services in cloud environments (AWS, Azure or GCP)Use containerisation tools such as DockerQuality and CollaborationLead and participate in code reviewsWrite unit, integration and end-to-end tests (JUnit, Testcontainers, Vitest, Storybook)Maintain clear technical documentationWork closely with product, architecture and delivery teamsEmbed security best practices (auth, access control, ..... full job details .....