Senior Data Scientist Fleet Optimization

About the Senior Data Scientist Fleet Optimization Role at SIXT

Join our Data Science team and help shape the future of mobility! At SIXT, we leverage data to optimize core business processes, from revenue management to strategic fleet steering. Our team designs, develops, and maintains cutting-edge machine learning models, optimization solvers, and simulation tools, directly influencing critical business decisions. Our work enhances automation and decision-making, improving the experience of millions of customers worldwide.

In this role, you will play a key part in understanding customer behaviour and fleet optimization, supporting strategic fleet steering and purchasing decisions. If you're excited about applying data science to solve real-world challenges, we’d love to hear from you!

Your Responsibilities at SIXT

• You lead the data science efforts behind planning and optimizing SIXT’s rental car fleet.
• You guide and mentor a team of 2-3 data scientists to deliver high-impact solutions.
• You act as a trusted advisor to stakeholders, helping them leverage data for strategic decision-making.
• You develop explainable long-term demand forecasts that drive fleet planning and investment strategies.
• You build optimization and simulation models to support data-driven fleet steering decisions.
• You collaborate with cross-functional teams (including business, engineering, and product) to bring your solutions to production.

What SIXT Looks For

• You bring a strong track record in Data Science, Machine Learning, and Advanced Optimization techniques, with bonus points for expertise in Revenue Management or Operations Research.
• You are highly proficient in Python and cloud-based ecosystems, preferably AWS, leveraging scalable, production-ready solutions.
• You have hands-on experience deploying, monitoring, and maintaining machine learning models in real-world environments.
• You demonstrate a growth mindset, with a passion for Decision Intelligence, AI-driven solutions, and solving complex, high-impact business challenges.
• You excel at stakeholder engagement, data storytelling, and championing a data-driven culture across the organization.
• You are fluent in English and thrive in fast-paced, international, and cross-functional teams.

What SIXT Offers You

• Generous Time Off: Enjoy 28 days of vacation, an additional day off for your birthday, and 1 volunteer day per year.
• Work-Life Balance & Flexibility: Benefit from a hybrid working model, flexible working hours, and no dress code.
• Great Employee Benefits: Access discounts on SIXT rent, share, ride, and SIXT+, along with partner discounts.
• Training & Development: Participate in training programs, external conferences, and internal dev & tech talks designed for your personal growth and development.
• Health & Well-being: Private health insurance to support your well-being.
• Additional Perks: Enjoy the Coverflex advantage system to enhance your employee experience.

About SIXT

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!

Key skills/competency

• Data Science
• Machine Learning
• Advanced Optimization
• Python
• AWS
• Demand Forecasting
• Fleet Optimization
• Decision Intelligence
• Stakeholder Engagement
• Operations Research