Senior Data Scientist (m/f/d) Personalization Join our Data Science team and make the magic happen. We drive business processes like pricing and many more with 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. Your work will enhance the experience of millions of our customers and have a direct impact on our business success. Your role at SIXT You engage with technical, product, and business stakeholders to translate business problems into technical solutions You design, develop, and test personalization solutions focusing on sorting, filtering, and recommendations You create and refine forecasting models using time series and machine learning methods to capture customer preferences You formulate and solve complex optimization problems (linear, nonlinear, dynamic, stochastic) through personalization to maximize defined KPIs You stay updated on the latest research in personalization techniques but are not afraid to use classical solutions when relevant You work closely with product managers, MLOps engineers, and software developers to deploy end‑to‑end solutions and continuously improve models Your skills matter Machine Learning & Forecasting – Proficient in modern ML techniques (regression, classification, causal inference, reinforcement learning) Personalization Expertise – Proven track record implementing or optimizing solutions for personalization of items or discounts (recommendation systems, ranking, sorting) Programming Skills – Expertise in Python for data analysis, modeling, and production deployment. Experience with version control (Git) and cloud technologies (preferably AWS) Analytical Mindset – Ability to translate complex business problems into actionable analytical tasks and clearly communicate findings to various audiences Stakeholder Interaction – Efficiently interact with stakeholders in business, product, software development engineering, and data science Communication – Fluent in English and appreciate cultural diversity What we offer Extra benefits – 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 – Monthly mobility allowance of €20 per month for even more freedom Future security – Retirement plan contribution and capital-forming benefits to ensure you are well covered Feel‑good atmosphere – Modern SIXT gym, various leisure activities like the gaming area or the SIXT choir, and high‑quality employee restaurant Flexibility – 30 days of vacation and a hybrid working model with flexible hours Giving back – 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 €4.00 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. #J-18808-Ljbffr