Senior Java Engineer (m/f/d)

📋 Description

• Design and ship backend Java services that thousands of customers depend on every day
• Own customer-facing distributed systems end to end, from understanding the real problem behind a
• Bring engineering judgment into every conversation with Product Owners and stakeholders, shaping
• Design and build the services, features, and tooling that power the platform, from microservices to
• Build it, run it, own it: full end-to-end responsibility, including on-call, for building, testing
• Work agent-first by default: implementation runs through agents, judgment and ownership stay with

🎯 Requirements

• Development experience in Java, Spring Boot is a must
• Familiarity with Go is beneficial
• Experienced in microservices and event-driven architectures, design for reliability, scalability
• Worked with PostgreSQL, JPA/Hibernate, Flyway, Redis, and Kafka
• Comfortable owning services in production, improving through observability, metrics, alerting
• Run agentic workflows end to end: orchestrating agents, judging output, and tuning eval loops

🎁 Benefits

• Discounts on SIXT rent, share, ride and SIXT+, attractive vehicle leasing offers, and exclusive
• Monthly mobility allowance of €20 per month
• Contributions to retirement plan and support with capital-forming benefits
• Modern SIXT gym, leisure activities like gaming area or SIXT choir, high-quality employee restaurant
• 30 days of vacation and hybrid working model with flexible hours
• One day each year to volunteer at a charitable organization dedicated to supporting children