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# Backend Engineer (Java/Kotlin)

- **Company:** rebuy
- **Location:** Berlin, Germany
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Algorithm Design, Build Automation, Code Review, Data Structures, Relational Databases, Database Design, Software Design Patterns, PostgreSQL, Apache Maven, Big O, Software Engineering, Technical Debt, Backend, Kotlin
- **Published:** May 22, 2026
- **Apply:** https://de.indeed.com/viewjob?jk=bb1193bda25da898

## About the Role

Do you have experience in Software development?, Do you have a Bachelor's degree?, We are looking for a passionate and experienced Backend Software Engineer who loves working in a team and has a strong getting-things-done attitude., * 4+ years of professional software development experience in Java or Kotlin (mandatory)

 * Computer Science fundamentals in algorithm design, data structures, problem-solving, and complexity analysis
 * Knowledge and experience with database design
 * Extensive experience with relational databases, including Postgres
 * You are not dependent on libraries, but know when, where, and why you should use them (or not)
 * Familiarity with CI/CD pipelines and comfort with build automation and dependency management tools like Maven
 * A collaborative mindset and experience working across teams and functions
 * Curiosity, openness to learning, and the confidence to step outside your comfort zone
 * Clear, direct communication

## Description

* Write code that is simple, readable, testable and maintainable
 * Implement code reviews, give helpful feedback, actively contribute in team discussions and decisions
 * Know the sweet spot between implementing beautiful and charming solutions which incorporate all existing software design patterns and just getting it done
 * Suggest changes to our software that simplify the technical architecture of individual services or pay down technical debt
 * Actively take over ownership for projects and collaborate with different teams across the organization
 * Maintain existing services and contribute to developing the new solutions


## Related Videos

- [Back(end) to the Future: Embracing the continuous Evolution of Infrastructure and Code](https://www.wearedevelopers.com/videos/440-back-end-to-the-future-embracing-the-continuous-evolution-of-infrastructure-and-code)
- [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock)
- [Kotlin Multiplatform - True power of native code reuse](https://www.wearedevelopers.com/videos/4-kotlin-multiplatform-true-power-of-native-code-reuse)
- [Moving from Java to Kotlin](https://www.wearedevelopers.com/videos/384-moving-from-java-to-kotlin)
- [Why Kotlin is the better Java and how you can start using it](https://www.wearedevelopers.com/videos/661-why-kotlin-is-the-better-java-and-how-you-can-start-using-it)
- [Meet Your New BFF: Backend to Frontend without the Duct Tape](https://www.wearedevelopers.com/videos/682-meet-your-new-bff-backend-to-frontend-without-the-duct-tape)

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