Senior Data Scientist Reinforcement Learning - Offer intelligence (m/f/d)

SIXT; Deutschland; Hybrid; EUR 75.000 - 95.000; Vollzeit

Zusammenfassung

A leading mobility service provider in Germany seeks a skilled professional to develop and deploy advanced probabilistic models for pricing strategies. The ideal candidate will have over 5 years of experience in statistical modeling and a strong proficiency in Python and Bayesian methods. This role offers a flexible work environment, competitive benefits, and the chance to make a real-world impact.

Leistungen

Discounts on SIXT services

Monthly mobility allowance

Retirement plan contributions

Access to on-site gym

30 days of vacation

Volunteer time off

Qualifikationen

• 5+ years applying regression and hierarchical models in production.
• Proficient in Bayesian modeling tools and writing custom likelihoods.
• Experience with cloud platforms like AWS, GCP, or Azure.

Aufgaben

• Architect and prototype advanced regression models for pricing strategy.
• Build reproducible pipelines for data validation and feature engineering.
• Deploy models and establish real-time monitoring for performance.

Kenntnisse

Statistical modeling

Bayesian methods

Python programming

Cloud platforms

Communication

Tools

PyMC

Stan

Docker

AWS

Jobbeschreibung

Company Description

Job Description

We work at the intersection of pricing science, advanced statistics, and scalable software. You'll build and bring in production state-of-the-art probabilistic models - like hierarchical Bayesian regression, SVI, or bandit algorithms - that power millions of pricing decisions at SIXT every day. From shaping the analytical question to deploying live models, you'll own the full lifecycle, supported by an innovation-friendly culture and great team. If you're excited by real-world impact, rigorous methods, and turning cutting-edge ideas into production - even if you don't tick every box - we'd love to hear from you!

YOUR ROLE AT SIXT

• You architect and prototype advanced regression models (linear, GLM, mixed-effects, Gaussian Process) with a principled Bayesian approach, guiding pricing strategy at scale
• You apply techniques like SVI, MCMC, and importance sampling to enable robust decision-making under uncertainty, even with sparse, high-volume, or streaming data
• You build and maintain reproducible pipelines for feature engineering, label generation, and automated data validation using tools like Airflow or Dagster, ensuring high code quality and reliability
• You deploy models via FastAPI, Docker, or Kubeflow, and establish real-time monitoring with Bayesian control charts and performance dashboards to catch drift and anomalies early
• You design sophisticated A/B and multivariate tests, apply quasi-experimental and causal impact methods, and quantify the value of information to balance exploration and exploitation
• You collaborate with product and revenue leaders to translate ambiguous ideas into testable hypotheses, while mentoring peers and elevating Bayesian practice through internal publications and workshops

YOUR SKILLS MATTER

• Expertise You bring deep statistical chops, with 5+ years of applying regression, hierarchical models, or state-space methods in production
• Computing proficiency You have a well-stocked Bayesian toolbelt - fluent in PyMC, Stan, NumPyro, TFP, or similar - and are comfortable writing custom likelihoods and priors.
• Modeling You have proven experience scaling inference using SVI, black-box VI, or advanced MCMC techniques on large datasets
• Engineering practices You write solid, production-grade Python code and are familiar with type hints, testing frameworks, and CI/CD workflows
• Infrastructure You are hands-on with cloud platforms like AWS, GCP, or Azure, and have experience with containerization (Docker/K8s) and workflow orchestration
• Stakeholder management You communicate uncertainty, lift, and risk in plain English for executives, while engaging deeply with scientists and engineers

WHAT WE OFFER

• Extra benefits Enjoy 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 We support you with a monthly mobility allowance of €20 per month for even more freedom
• Future security We contribute to your retirement plan and support you with capital-forming benefits to ensure you are well covered
• Feel-good atmosphere Stay active with our modern SIXT gym, various leisure activities like the gaming area or the SIXT choir, and enjoy our high-quality employee restaurant
• Flexibility Enjoy 30 days of vacation and a hybrid working model with flexible hours
• Giving back Take one day each year to volunteer at a charitable organization dedicated to supporting children

Qualifications

Additional Information

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!