Senior Java Developer

Location: Amsterdam, Netherlands
Work Model: Hybrid (1 day onsite per week)
Contract Duration: 6 Months
Start Date: August 2026
Experience Required: 10+ Years

About the Role

We are seeking an experienced Senior Java Developer to design, develop, and maintain enterprise-grade applications in a modern microservices environment. The ideal candidate has strong backend development expertise, experience with cloud-based CI/CD practices, and a passion for delivering high-quality, scalable software solutions within Agile teams.

Key Responsibilities

• Design, develop, test, and maintain Java-based enterprise applications.
• Build and enhance RESTful APIs and microservices using Spring Boot.
• Develop clean, maintainable, and scalable code following best practices.
• Write comprehensive unit and integration tests using JUnit and Karate/Cucumber.
• Collaborate with cross-functional Agile teams to deliver high-quality software.
• Participate in code reviews and ensure adherence to coding standards.
• Implement and maintain CI/CD pipelines.
• Troubleshoot production issues and optimize application performance.
• Contribute to continuous improvement and adoption of modern development practices.

Required Skills & Experience

Core Technologies

• 10+ years of Java software development experience.
• Strong experience with:
  • Java 8 and Java 11
  • Spring Boot
  • Spring Framework
  • Spring Batch
  • Spring Security
  • JAX-RS
  • Kotlin
• Strong understanding of Microservices architecture.
• Experience developing REST APIs and working with HTTP and JSON.

Testing

• Experience writing:
  • Unit Tests using JUnit
  • Integration Tests
  • API testing using Karate or Cucumber Framework

DevOps & CI/CD

• Hands-on experience with:
  • Azure DevOps
  • Git
  • Maven
  • Jenkins
  • Ansible
  • Artifactory
• Experience with:
  • Azure repositories
  • Code reviews
  • Application deployment
  • CI/CD pipelines

Databases & Infrastructure

• Experience with NoSQL databases, preferably Cassandra.
• Good knowledge of Linux environments.

Preferred Experience

• Banking or Payments domain experience.
• Passion for Open Source technologies.
• Experience working in large enterprise environments.

Soft Skills

• Strong analytical and problem-solving abilities.
• Excellent project and time management skills.
• Proactive, collaborative, and team-oriented mindset.
• Ability to work independently when required.
• Passion for learning and adopting new technologies.
• Strong communication and knowledge-sharing skills.

Working Environment

• Agile development environment.
• Hybrid working model with one day per week in the Amsterdam office.