Job Title: Java / AWS Developer
Clearance Level: DV Clearance
Location: On-site 5 days a week in Stratford
Engagement Type: Contract – Inside IR35
Duration: Initial 6–12 months (extendable)

A secure defence programme requires a skilled Java Developer with AWS experience to support the upgrade and refactoring of legacy systems built on Oracle technologies. This role involves reworking tightly coupled Java applications, integrating with AWS cloud services, and supporting the uplift of on-premise infrastructure to hybrid or cloud-native deployment models.
You will be part of a cross-functional agile team modernising mission-critical systems that require consistent performance, strict security standards, and long-term supportability.
Key Responsibilities

• Refactor and enhance legacy Java-based systems, often tightly coupled with Oracle DB.
• Migrate and rearchitect components for cloud-readiness using AWS infrastructure and services.
• Design and implement efficient backend logic and APIs for integration with legacy and modern endpoints.
• Collaborate with DevOps, infrastructure, and data teams to align development with broader architectural and hosting strategies.
• Apply defensive and secure coding principles in line with GDS information assurance standards.
• Participate in Agile ceremonies and contribute to technical planning, sprint reviews, and retrospectives.