Fullstack Developer (Java & Node) - 500 Inside

Job Title: Fullstack Developer (Java & Node)
Rate: £500 (Inside IR35)
Duration: 6 months
Location: Remote - One Day Per Month in Newcastle
Clearance: BPSS
Stages: 1 Stage

Must Have Government Experience

• Developed and maintained microservices using Java (Spring Boot) and Node.js, supporting high-volume digital services used by millions of UK citizens.
• Built responsive Front End components using React, HTML5, CSS3 and TypeScript, improving user experience and accessibility in line with WCAG 2.2 AA.
• Designed and implemented secure RESTful APIs, integrating with internal government systems and third-party services.
• Developed cloud-native applications on AWS, using services including Lambda, ECS, S3, API Gateway, CloudWatch and RDS.
• Implemented Infrastructure as Code using Terraform, enabling repeatable deployments across multiple environments.
• Built and maintained CI/CD pipelines using GitHub Actions and Jenkins, reducing deployment time and supporting multiple production releases each sprint.
• Collaborated closely with Product Managers, Delivery Managers, Designers, Business Analysts and Test Engineers within agile Scrum ceremonies to deliver user-centred features.
• Improved application performance through code optimisation, caching strategies and database tuning, reducing API response times by over 30%.
• Developed automated unit, integration and end-to-end tests using JUnit, Mockito, Jest, Cypress and Playwright, increasing deployment confidence and reducing production defects.
• Worked with PostgreSQL and MongoDB, designing efficient data models and optimising complex queries.
• Applied secure coding principles in line with OWASP, supporting authentication and authorisation using OAuth2, OpenID Connect and JWT.
• Monitored live services using CloudWatch, Grafana and Kibana, diagnosing incidents and supporting continuous service improvement.
• Participated in code reviews, pair programming and technical design sessions, promoting engineering best practice across the development team.
• Supported live service operations, investigating incidents, implementing fixes and contributing to post-incident reviews to improve service resilience.
• Worked within a DevSecOps culture, ensuring applications met security, performance and compliance requirements expected of central government services.