Contract Senior Full Stack Developer – Java 21 / React / AWS

Talan

3d

About The Position

We are looking for a Senior Full Stack Developer to build a new Forms capability. This capability will consist of a Java 21 / Spring Boot 3 backend service and a React / Vite / TanStack frontend portal, both deployed as containers on AWS EKS. The solution will reuse existing platform services for users, projects, project assignments, document storage/S3, Cognito authentication and SES email, integrating with them through REST APIs and JWT. Forms will be hard-coded for each use case, rather than generated dynamically from configuration. For each reporting period, the system will create a single immutable submission snapshot, with no version history. Project totals will only be updated once a submission is approved, using a single transactional update. The application should use one common, scheme-independent codebase, with lightweight configuration applied for each deployment. Production deployments will be separated as required, while lower environments may support multiple configurations.

Requirements

• Java 21
• Spring Boot 3
• React
• Vite
• TanStack
• AWS EKS
• REST APIs
• JWT
• UK-based
• Eligible to obtain BPSS clearance

Responsibilities

• Build a new Forms capability consisting of a Java 21 / Spring Boot 3 backend service and a React / Vite / TanStack frontend portal.
• Deploy both backend and frontend as containers on AWS EKS.
• Reuse existing platform services for users, projects, project assignments, document storage/S3, Cognito authentication and SES email.
• Integrate with existing platform services through REST APIs and JWT.
• Develop hard-coded forms for each use case.
• Create a single immutable submission snapshot for each reporting period, with no version history.
• Update project totals only once a submission is approved, using a single transactional update.
• Utilize one common, scheme-independent codebase with lightweight configuration for each deployment.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed