Java Developer.

Java Developer - Amsterdam (Hybrid - 2 days onsite per week) - Start Date: 1st November 2025 - rate negotiable - 6-12 month contract

We're recruiting for a Senior Java Developer to join a newly established Digital Product Hub in Amsterdam. This team is driving the development of secure, high-performance digital services that enhance customer experience across a global platform

You'll work within a collaborative engineering team focused on authentication, performance, and resiliency delivering modern, scalable solutions built on Java and cloud-native technologies.

Key Responsibilities:

• Design, develop, and maintain microservices using Java 21 / Spring Boot 3
• Implement and enhance authentication and authorization mechanisms leveraging OIDC, OAuth 2.0, and JWT
• Apply resiliency design principles to ensure system stability and reliability under scale
• Collaborate closely with product, architecture, and security teams to improve system performance and integrity
• Contribute to secure coding practices, rate-limiting, and encryption implementations
• Mentor and support less experienced engineers where appropriate

Key Skills & Experience:

• 5 years' experience in Java software engineering, ideally in distributed, cloud-based systems
• Deep understanding of AuthN/AuthZ, OIDC, OAuth 2.0, and JWT standards
• Proficient with Spring / Spring Boot, Postgres, Kubernetes, and Git
• Experience with cybersecurity, encryption, and resilient system design
• Excellent communication and collaboration skills, confident working in an international environment
• Exposure to observability platforms is a plus