Mid Backend Developer (Java)

Responsibilities

• Join our international development team working on a high-impact project for a leading automotive client.
• As a backend developer, you’ll take part in designing and implementing scalable microservices based on Java Spring Boot, using modern infrastructure and deployment approaches.
• You will work with Kafka for distributed messaging and implement infrastructure as code using Terraform and CDK.
• The role involves hands-on development in an AWS-based environment with a strong focus on clean code, performance, and DevOps best practices.

Qualifications

• Successfully completed university degree in computer science, business informatics, mathematics, or a comparable field.
• 4+ years of experience as a backend developer in commercial projects.
• Strong expertise in Java and Spring Boot (v4).
• Experience with Kafka for event-driven architectures.
• Solid knowledge of AWS services.
• Hands-on experience with IaC tools, especially Terraform and CDK.
• Practical understanding of clean code, testing, and microservice patterns.
• Good command of English (working in an international environment).
• Openness to hybrid work model with occasional visits to our Katowice office.

About Cluster Reply

Cluster Reply is the Reply Group company specializing in consulting and system integration of Microsoft technologies. As a Microsoft partner, Cluster Reply is active in Germany, Austria and Switzerland and works within the Reply network with sister companies in Brazil, Great Britain, Italy as well as the USA. The company focuses on innovation and supports customers in their digital transformation. The solutions range from on-premises to cloud applications in the areas of modern workplace and security, business applications, applications and infrastructure as well as data and artificial intelligence.