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# Senior Backend Engineer - Germany

- **Company:** Klar Gmbh
- **Location:** Aachen, Germany (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Artificial Intelligence, Amazon S3, Acceptance Test-Driven Development, Checkstyle, Continuous Delivery, Relational Databases, Github, Protocol Buffers, Hibernate (Java), Junit, PostgreSQL, Mockito, Prometheus, Test-Driven Development (TDD), Grafana, Concurrency, Spring-boot, Backend, Kotlin, Event Driven Architecture, Apache Kafka, Restful APIs, Microservices
- **Published:** November 14, 2026
- **Apply:** https://startup.jobs/senior-backend-engineer-germany-klar-10766679

## About the Role

Strong proficiency in:

 * Java/Spring Boot ecosystem, Hibernate
 * Microservices, event-driven architectures, REST APIs
 * Relational databases (PostgreSQL preferred), transactions and concurrency, maintaining large, high-traffic tables.
 * Continuous delivery with test-driven development (ATDD), or willingness to learn and adapt.

Nice-to-have:

 * Experience in financial systems
 * Experience with observability stacks

## Description

This is a full-time remote opportunity for candidates based in Germany.

As part of the investment team, you will manage multiple microservices and supporting library projects in our event-driven microservices architecture powered by Kafka. You will be responsible for the full lifecycle of savings accounts, campaigns (rewards), and the entire investment platform, taxation, etc.

You will work on financial-grade, high-throughput systems that must be correct and auditable, while integrating with a broader ecosystem of microservices managed by other teams.

Our tech stack

 * Java (21+)/Kotlin, SpringBoot 4, Hibernate, Flyway, Protobuf
 * Postgres, Kafka, AWS S3, Github Actions, Prometheus, Grafana
 * JUnit 5, AssertJ, Mockito/MockK, Testcontainers, Karate
 * Checkstyle/ktlint

What you can expect:

 * A small and efficient cross-functional team dedicated to high engineering standards. As our project portfolio expands, we offer an engaging work atmosphere packed with continuous learning opportunities.
 * AI-first development with human oversight and pair development and review.
 * A continuous delivery environment with its principles and standards.

What we are looking for:

Must-have:

 * Solid backend software development experience.