Full Stack Engineer - Java/React (m/f/d)

Revenue Management at SIXT is powered by reliable, scalable technology that connects fleet planning, commercial rules, and external partners. As a Full Stack Engineer in our Revenue Management technology team based in Lisbon, you will build and evolve business-critical products across multiple domains — from strategic planning tools to third-party integrations and tax configuration services. You will own features end to end, collaborating closely with Product, Data Science, and business experts to turn complex requirements into software that creates real operational and commercial value. If you enjoy working across different domains, understanding the business behind the technology, and taking full responsibility from problem definition to production, join us and shape the systems that drive SIXT forward — apply now! YOUR ROLE AT SIXT You own features end to end, from understanding the business problem and defining acceptance criteria to implementation, deployment, monitoring, and validation You build and evolve systems across multiple Revenue Management domains, including fleet-planning applications, third-party integrations, and tax configuration services You develop intuitive user experiences with React and TypeScript alongside reliable backend services with Java and Spring Boot You design cloud-native, distributed, and event-driven solutions that integrate safely with internal and external systems You collaborate with Product, Data Science, business experts, and engineering teams to turn complex processes into clear technical solutions You drive engineering quality through automated testing, observability, code reviews, and maintainable documentation YOUR SKILLS MATTER Full-Stack Engineering You have professional experience with Java, React, and TypeScript and are comfortable working across frontend and backend systems Backend Development You have hands-on experience with Spring Boot or a comparable Java framework and understand API design, distributed systems,