Staff Software Development Engineer (m/f/d)

Sixt; München; On-site; EUR 90,000 - 140,000; Full time

Benefits offered by this job

Discounts on SIXT mobility services

Mobility allowance €20/month

Retirement plan & benefits

Gym and employee restaurant

Hybrid work model

Volunteer day

Job summary

SIXT in Pullach near Munich seeks a Staff-level backend engineer to design and evolve scalable Java/Spring Boot services across product areas. You will own architectures, drive cross-team initiatives, and work with REST/gRPC, PostgreSQL, Redis, Kafka, and Kubernetes in a cloud-native setting.

You will mentor engineers, collaborate with product managers, and apply AI-assisted tooling to improve quality and speed, while embracing a hybrid work model and flexible hours.

Qualifications

• Deep experience building backend services with modern Java and Spring Boot, at staff level across architecture and cross-team leadership.
• Experience with microservices and event-driven architectures focusing on reliability and maintainability.
• Worked with PostgreSQL, JPA/Hibernate, Flyway, Redis, and Kafka for data storage and messaging.
• Strong operations mindset: observability, metrics, alerting, CI/CD, and Kubernetes-based ops.
• Comfortable mentoring engineers; collaborates with product managers and cross-functional teams.
• Curiosity and collaboration across stack; React/TypeScript knowledge is a plus.

Responsibilities

• Design, build, and evolve backend services in Java/Spring Boot across product areas.
• Lead cross-team technical initiatives from idea to production with business impact.
• Work across REST and gRPC, event-driven flows, and shared platform libraries.
• Enhance architecture, performance, security, testing, and developer experience in a cloud-native environment with Kubernetes and CI/CD.
• Mentor engineers, review code, and share knowledge with teams.

Skills

Java Backend

Spring Boot

Microservices

Event-driven

Kubernetes

Observability

Leadership

Tools

Kafka

Redis

Flyway

Job description

You want to work on the core of high-impact mobility experiences, drive topics across multiple product and platform areas, and shape the future architecture of a broad Java backend landscape? Then join us and help evolve the systems behind digital checkout, post-booking journeys, customer self-service, and the shared platform capabilities around them. We are building and operating business-critical backend services with a strong focus on scalability, resilience, observability, and testability. Join us in Pullach near Munich and help shape the future of mobility with us!

YOUR ROLE AT SIXT

• You design, build, and evolve reliable and scalable backend services in modern Java and Spring Boot across multiple product areas and shared platform capabilities
• You stay hands-on in code, lead cross-team technical initiatives, and drive topics from idea to production with clear business impact
• You work across REST and gRPC APIs, event-driven flows, PostgreSQL, Redis, Kafka, Flyway, and shared platform libraries to deliver robust customer-facing solutions
• You raise the bar on architecture, observability, performance, security, testing, and developer experience in a cloud-native environment with Kubernetes, CI/CD, and modern engineering guardrails
• You collaborate closely with product managers and cross-functional team members across backend, web, and mobile, and you mentor engineers through strong technical leadership, reviews, and knowledge sharing
• You use AI-assisted tooling pragmatically where it improves quality, speed, or developer experience, and you help define sensible engineering practices around it

YOUR SKILLS MATTER

• Experience You have deep experience building backend services with modern Java and Spring Boot, and you are comfortable operating at Staff level across architecture, implementation, and cross-team technical leadership
• Architecture You are experienced in microservices and event-driven architectures, and you know how to design for reliability, scalability, idempotency, and long-term maintainability
• Data Stores You have worked with PostgreSQL, JPA/Hibernate, Flyway, Redis, and Kafka, and understand how to choose the right persistence and messaging patterns for the problem
• Operations You are comfortable owning services in production environments and improving them through observability, metrics, alerting, CI/CD, and Kubernetes-based operations
• AI-Assisted Development You are comfortable using AI-assisted tools thoughtfully and know how to apply them in ways that remain reviewable, reliable, and useful in day-to-day engineering work
• Curiosity You are collaborative, and product-minded, willing to work across the stack when needed; experience with React, TypeScript, micro-frontends, and end-to-end feature delivery is a huge plus

WHAT WE OFFER

• Extra benefits Enjoy discounts on SIXT rent, share, ride and SIXT+, attractive vehicle leasing offers, and exclusive deals with partners for travel, tech, fashion and more
• Mobility boost We support you with a monthly mobility allowance of €20 per month for even more freedom
• Future security We contribute to your retirement plan and support you with capital-forming benefits to ensure you are well covered
• Feel-good atmosphere Stay active with our modern SIXT gym, various leisure activities like the gaming area or the SIXT choir, and enjoy our high-quality employee restaurant
• Flexibility Enjoy 30 days of vacation and a hybrid working model with flexible hours
• Giving back Take one day each year to volunteer at a charitable organization dedicated to supporting children

About us:

We are a globally leading mobility service provider with a revenue of €4.3 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 360,000 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 100 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.