Senior Data Scientist Level III

Join our team of data science experts to drive innovation in performance marketing and portfolio optimization. Our mission is to apply state-of-the-art techniques—including marketing mix modeling, multi-touch attribution, causal inference, and advanced ML methods like double machine learning—to optimize large-scale ad portfolios and automate campaign strategies. We build scalable systems that enhance marketing efficiency, enabling data-driven decision-making and superior business outcomes. 

YOUR ROLE AT SIXT

• Develop and Enhance Data Science Solutions: Design, implement, and maintain production-grade models and algorithms for online performance marketing, with a focus on lift studies, marketing mix modeling, multi-touch attribution, and causal machine learning techniques. 

• Cross-Functional Collaboration: Partner with teams in data science, engineering, marketing, product management, and business operations to transition experimental models into scalable production environments. 

• Monitoring and Analysis: Track and analyze model performance, visualize key metrics, and provide actionable insights on system behavior and its impact on marketing ROI and business KPIs. 

• Iterative Improvement: Collaborate with business stakeholders to identify inefficiencies in advertising processes and propose data-driven, ML-powered solutions for optimization and automation. 

• Knowledge Sharing: Effectively communicate results, methodologies, and actionable insights to both technical and non-technical audiences, ensuring all stakeholders understand the value and implications of your work. 

YOUR SKILLS MATTER

• Foundational Experience in Data Science: Strong background in data science and statistics or econometrics, with prior exposure to marketing mix modeling, multi-touch attribution, causal inference, or advertising optimization methods. 

• Proficiency in Python and familiarity with ML frameworks (e.g., TensorFlow, PyTorch, Scikit-learn). 

• Experience with cloud platforms (AWS, GCP, or Azure) and tools for large-scale data processing. 

• Expertise in statistical and causal inference techniques, including A/B testing, quasi-experimental designs, difference-in-differences, propensity score matching, instrumental variables, synthetic control methods, regression discontinuity, and double machine learning. 

• Production Mindset: Experience collaborating with ML engineers to develop prototypes and deploy them in production environments, ensuring scalability, robustness, and adaptability to changing requirements. 

• Growth-Oriented: Eager to learn new methods and tackle real-world problems in performance marketing. We encourage applicants with relevant skills and a passion for optimizing advertising strategies to apply, even if they don’t have expertise in every listed technique. 

• Communication & Teamwork: 

  Fluent in English and enthusiastic about collaborating in a diverse, multinational team. Demonstrated ability to communicate complex technical ideas effectively to non-technical stakeholders. 

WHAT WE OFFER

• 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 us:
We are a leading global mobility service provider with sales of €3.07 billion and around 9,000 employees worldwide. Our mobility platform ONE combines our products SIXT rent (car rental), SIXT share (car sharing), SIXT ride (cab, driver and chauffeur services), SIXT+ (car subscription) and gives our customers access to our fleet of 222,000 vehicles, the services of 1,500 cooperation partners and around 1.5 million drivers worldwide. Together with our franchise partners, we are present in more than 110 countries at 2,098 rental stations. At SIXT, a first-class customer experience and outstanding customer service are our top priorities. We focus on true entrepreneurship and long-term stability and align our corporate strategy with foresight. Want to take off with us and revolutionize the world of mobility? Apply now!