Job description:

Java Backend Developer in Berlin

On behalf of our client, you will develop backend applications for millions of users as a Java Backend Developer . You will work with Java and Spring on a Terraform-based AWS infrastructure using Fargate, Lambda, DynamoDB, Kinesis, S3, and OpenSearch. The team is currently implementing agentic coding and using Claude Code for this purpose. At our client's site in Berlin , you will test where AI agents, LLM systems, and RAG truly help in everyday development. As a Java Backend Developer in Berlin , you will contribute to shaping the team's way of working.

Your advantages:

This is what you can expect as a Java backend developer in Berlin :

• Work-life balance through clear structures and short communication channels
• Further training opportunities related to cloud computing, AI, and agentic coding
• Genuine participation with direct influence on the product
• Modern office in a central location with hardware of your choice

Your tasks:

As a Java Backend Developer in Berlin , you will be responsible for the following tasks:

• They design, develop, test, and maintain backend applications.
• They use AI agents like Claude Code in features, bug fixes, and refactoring.
• They help build LLM applications and RAG systems on the AWS infrastructure.
• They maintain and secure the Terraform infrastructure and increase efficiency and reliability.
• They are on call for critical incidents outside of business hours.

Your profile:

For the role of Java Backend Developer in Berlin , you bring the following qualifications:

• At least three years of professional experience in Java development with Spring or comparable frameworks.
• Experience with AWS and containerized applications in production environments, Terraform is a plus.
• Affinity for AI tools such as Claude, ChatGPT or Copilot, as well as interest in agentic coding, LLMs and RAG.
• Objective, constructive dialogue and enthusiasm for technology
• Excellent German skills (at least C1 level) in both spoken and written form, as well as good English skills.

Have we sparked your interest?

Interested? Then apply directly via the "Apply now!" button, send us an email, or give us a call! We'll support you confidentially and without obligation. Our service is free of charge.

We look forward to receiving your application documents, quoting job ID 1237. If this job posting doesn't quite match your requirements, we can also advise you on other job opportunities and career tips. Feel free to contact us!

We have many interesting options nationwide in the areas of software development, web development, AI and Big Data, as well as management positions in the tech industry.

Does it make sense to apply for multiple positions with you?

We recommend that you apply for the position that interests you most. We will then thoroughly review your profile. If it also matches other positions, we will discuss this with you during the initial interview.

• Therefore, we ask you to initially focus your application on only one position at Tech Punk. Additionally, please note that a minimum German language proficiency level of B2 is required for our positions.