Software Development Engineer III (Java Backend)

At SIXT, we are engineering the future of mobility — one system at a time. As a Senior Backend Engineer in our BranchOps team, you will engineer the systems that power the full vehicle turnaround lifecycle and branch-level fleet orchestration, with deep integration into our IoT-connected fleet infrastructure. This is a role where backend engineering meets real-world operations at scale, in a team that builds with purpose and moves with pace. If this sounds like your next move, apply now and become part of something bigger. YOUR ROLE AT SIXT You will design and build robust backend services in Java that power vehicle turnaround and fleet orchestration workflows You will contribute to the design and evolution of distributed, event-driven systems that operate at branch level and at global scale You will develop and maintain shared libraries and internal tooling that improve reliability and delivery speed across the BranchOps engineering team You will collaborate closely with product, operations, and engineering stakeholders to translate complex business workflows into scalable technical solutions You will actively integrate AI coding tools such as Claude and Cursor into your daily development workflow, helping to embed AI-assisted engineering as a standard practice within the team YOUR SKILLS MATTER You hold a B.Tech, B.E., or Master's Degree in Computer Science or a closely related discipline You bring 7–9 years of hands-on experience in sophisticated engineering environments — including cloud-native application development, scalability problem-solving, and event-driven system design, ideally within a start-up or scale-up setting You have strong, production-proven experience with Java and Spring Boot (must-have) and are confident navigating a modern microservices landscape end to end You have designed or operated distributed systems and microservices architectures, with a clear understanding of the trade-offs that come with operating at scale You have a solid grasp of event-driven patterns, pub-sub models, and message brokers such as Apache Kafka You actively use AI coding assistants — such as Cursor, Claude— to accelerate your work, while confidently recognising their limitations and knowing when engineering judgment must take precedence WHAT WE OFFER Grow Further, Go Further Advance your skills and unlock your potential with our Education Assistance Program Balance Your Career Benefit from a hybrid work environment complemented by flexible working hours Fuel Your Day Great work deserves great fuel. Enjoy meal benefits that keep you energized and ready to bring your A-game Your Wellness Matters We're committed to your well-being through comprehensive insurance, wellness programs, health checkups, and fitness benefits Recognition That Counts We create a culture of appreciation, rewarding your impact through referral incentives and loyalty perks as you advance with us Growing Families, Growing Joy As your family grows, we're here to celebrate with a special newborn gift for your little one About us: We are a globally leading mobility service provider with a revenue of €4.00 billion and around 9,000 employees worldwide. Our mobility platform ONE combines our products SIXT rent (car rental), SIXT share (car sharing), SIXT ride (taxi, ride, and chauffeur services), and SIXT+ (car subscription), giving our customers access to our fleet of 350,000 vehicles, the services of 4,000 cooperation partners, and around 5 million drivers worldwide. Together with our franchise partners, we are present in more than 110 countries at 2,000 rental stations. At SIXT, top-tier customer experience and outstanding customer service are our highest priorities. We believe in true entrepreneurship and long-term stability and align our corporate strategy with foresight. Get started with us and apply now!