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

About the role

Talan, part of the Talan Group, is looking for a Senior Full Stack Developer to build a new Forms capability. The solution consists of a Java 21 / Spring Boot 3 backend service and a React / Vite / TanStack frontend portal, both deployed as containers on AWS EKS. It is a one-month contract with a possible one-month extension.

Key responsibilities

• Build a Java 21 / Spring Boot 3 backend and a React / Vite / TanStack frontend portal.
• Reuse existing platform services for users, projects, project assignments, document storage (S3), Cognito authentication and SES email, connecting to them via REST APIs and JWT.
• Hard-code forms for each use case instead of generating them dynamically from configuration.
• Create a single immutable submission snapshot per reporting period, with no version history.
• Update project totals only once a submission is approved, using a single transactional update.
• Use one common, scheme-independent codebase with lightweight configuration per deployment, and separate production deployments while allowing multiple configurations in lower environments.

Required profile

• Must be UK-based and eligible to obtain BPSS clearance.
• Senior full stack developer with experience in Java, Spring Boot and React.

Required skills

• Java 21 and Spring Boot 3
• React, Vite and TanStack
• AWS EKS and AWS S3
• Cognito and SES