Senior Machine Learning Engineer (m/f/d)

SIXT is a global market leader in the mobility space and sets the pace for innovation like nobody else. We are transforming the industry to become fully digitalized and offer our customers an answer to all mobility needs they have. Our vision is: Transform the world moves, because people expect better. Join our Data Science team and make the magic happen. We drive business processes like pricing and many more with the use of sophisticated algorithms. For this purpose, we design, develop and maintain state of the art machine learning models and manifold optimization solvers as well as simulation models. As a member of this team, your work will improve the experience of millions of our customers and have a direct impact on our business results. Apply now and join our journey and become a part of the SIXT family. YOUR ROLE AT SIXT You Develop further and maintain a solid infrastructure within the Data Science team, with a focus on DevOps processes and cloud technologies You Establish and extend tools to automate our Data Science Tech Stack to continuously enhance MLOps processes, including model deployment and data pipelines You Ensure a reliable and scalable deployment foundation for our Data Science ML models and algorithms and work closely with other departments like cloud infrastructure You Collaborate effectively with stakeholders from other departments to achieve our business goals You Build and maintain infrastructure as code (IaC) using tools like Terraform to manage cloud resources You Make data science experiments production-ready, monitored, robust, and scalable YOUR SKILLS MATTER Technical Background You have strong knowledge of cloud technologies, ideally in AWS Experience You have solid coding skills in Python and hands-on experience with CI/CD approaches Tools & Platforms You have experience with infrastructure as code (IaC) tools like Terraform, Docker, and ideally container orchestration systems such as Kubernetes Domain Knowledge You ideally bring knowledge of ML operations and data engineering, including data modeling, database systems, and ETL processes Practices You ideally have experience with monitoring and logging tools to detect and diagnose issues in machine learning models and their supporting infrastructure Soft Skills You excellent communication and collaboration skills, with fluency in English and an appreciation for cultural diversity WHAT WE OFFER A Global Tech Hub in Lisbon Join a thriving international tech community and work alongside engineers, product experts, and business teams who turn ideas into real impact. Our hubs at Factory Lisboa in Beato and ARTs Lisboa in Parque das Nações are where great tech gets built Learning & Knowledge Exchange Level up through regular events with internal and external speakers. We value curiosity, continuous learning, and open exchange – across teams, disciplines, and borders Flexible Work Setup Two office days a week, flexible hours, and modern spaces built for both deep focus and team collaboration – work the way that brings out your best Time Off & Wellbeing Enjoy 28 vacation days per year, an additional day off on your birthday, one volunteer day annually, and private health insurance that also covers your spouse and children free of charge Practical Everyday Benefits Get a yearly Coverflex allowance and a daily meal allowance to make everyday life a little easier SIXT Perks Get exclusive rates on all SIXT services, with special discounts extended to your family and friends. Because great perks are even better when you can share them 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!