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Freelance Senior Java Developer

Germany, Nürnberg · Job Posted July 03, 2026
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Job Description

We’re supporting a major public sector digital transformation programme in Germany and are looking for an experienced Senior Java Developer to join an agile development team delivering business-critical applications. This is an excellent opportunity to work on a modern microservices environment using the latest Java ecosystem, contributing to the development, enhancement and ongoing support of large-scale enterprise applications.

Job Responsibility

  • Develop and implement functional and technical requirements using modern Java technologies
  • Build and enhance microservices, APIs and backend services within an Agile Scrum team
  • Participate in pair programming, code reviews and knowledge sharing
  • Support requirements analysis and provide development effort estimates
  • Collaborate with infrastructure, middleware and integration teams to support changes, maintenance and production releases
  • Investigate, troubleshoot and resolve production issues and application defects
  • Produce clear technical documentation covering development activities, configurations and processes

Requirements

  • Strong commercial experience with Java 17+
  • Extensive experience with Spring Boot 3.x and Hibernate 6.x
  • Strong understanding of microservice architectures
  • Experience with JUnit 5 and Test-Driven Development (TDD)
  • Knowledge of event-driven and message-driven architectures
  • API development and design using OpenAPI
  • SQL experience with Oracle (MariaDB experience beneficial)
  • Experience working with Kubernetes or OpenShift
  • Familiarity with Git, Jira and Jenkins
  • Experience implementing Continuous Integration (CI) pipelines
  • Strong experience working within Agile Scrum environments
  • Fluent German (C1 level or Native Speaker) is essential.

Nice to have

Front-end development experience using JavaScript and Angular

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