Full-Stack Developer Location: Hybrid (2-3 days in Milton Keynes) Duration: 6 months (extension likely) Clearance: SC Rate: 525 - 575 per day (outside IR35) OverviewWe are seeking an experienced Full-Stack Developer to support the ongoing enhancement and deployment of an AI-led data tool used across UK Government for digital redaction and data sensitivity review. You''ll join a multi-disciplinary team delivering scalable, secure, and high-performance software solutions. Key ResponsibilitiesFront-End DevelopmentBuild responsive user interfaces using HTML, CSS, JavaScript, TypeScript, and React.Ensure cross-browser compatibility and optimised user experience.Back-End DevelopmentDevelop APIs and microservices using Java and Spring Boot.Implement server-side logic, data models, and integration points.Database and DevOpsDesign and maintain PostgreSQL/MySQL databases and write efficient queries.Set up and maintain CI/CD pipelines (GitHub Actions, Jenkins).Manage deployments in AWS/Azure/GCP environments and monitor performance.Testing and QualityWrite unit, integration, and end-to-end tests using JUnit, Test Containers, Vitest, and StoryBook.Conduct code reviews to maintain quality and consistency.Security and DocumentationImplement authentication, authorisation, and other security best practices.Maintain internal API and code documentation. Essential SkillsStrong experience with React, TypeScript, Java, Spring Boot, and RESTful API development.Proficient with SQL databases and CI