Senior Backend Engineer (d/f/m) - Fixed Term contract

• You have solid professional experience in backend software engineering with Java and Spring Boot and are comfortable owning production services.
• You have hands-on experience with event-driven architectures and Kafka and understand patterns for building reliable distributed systems.
• You are confident working with PostgreSQL, database migrations, automated testing, and modern engineering practices.
• You approach complex problems systematically, using observability, logs, metrics, and testing to understand issues and develop sustainable solutions.
• You actively explore and use AI-supported engineering tools and practices to improve development, problem-solving, and software quality.

• Build, evolve, and maintain backend microservices using Java 25 and Spring Boot.
• Take end-to-end ownership of your services in production, including triaging alerts and investigating issues using structured logs and metrics.
• Design and implement event-driven systems with Kafka, including reliable messaging patterns such as the outbox pattern.
• Model complex business workflows around transactions, payments, shipping, and integrations with external partners.
• Work with PostgreSQL and Flyway to design, evolve, and maintain reliable data models and database migrations.
• Ensure high software quality through comprehensive unit and integration testing, including Testcontainers, while using AI tools thoughtfully to improve your engineering workflow.

At Kleinanzeigen, we care about our people — their wellbeing, growth, and life beyond work. Our benefits are designed to support you holistically, giving you flexibility and opportunities to thrive.

✨ Flexibility

• Flexible working time (hybrid)

• 20 days “work from anywhere”

• Paid additional parental leave for both parents

• Extra paid days off for special occasions (e.g. your wedding or a move)

❤️‍🩹 Wellbeing & Support

• Confidential support & coaching for you and your loved ones

• Annual company sports events

• Pension and life insurance

📚 Growth & Development

• Personal development budget

• Learning opportunities to grow your skills and career

🛍️ Perks & Everyday benefits

• Corporate benefits and exclusive discounts

• An attractive referral program

• Transportation allowance

• Free shipping on Kleinanzeigen Direktkauf

Kleinanzeigen is an equal opportunity employer that values diversity and inclusion. We welcome people of all backgrounds, races, religions, colours, national origins, gender identities, sexual orientation, ages, marital status, or disability.

If this role sparks your interest but you’re not sure you meet every single requirement, we’d still love to hear from you anyway.