About rebuy
Ready to become part of the most important mission on this planet? We are rebuy, pioneers in the sustainable reuse of electronics and media, and we are looking for you! Our mission: to make circular living accessible to all, one transaction at a time. By giving products a second chance, we reduce resource consumption and avoid unnecessary e-waste.
Our global team of 500 drives things forward collaboratively, takes personal responsibility, values constructive critical thinking, and is dedicated to serving our customers and planet.
The Role
We are looking for a Senior Data Scientist to join our Data Science & Analytics team. You will own the forecasting and price elasticity models at the core of rebuy's pricing engine - models that directly shape commercial decisions across the business. We care about outcomes, not just predictions: the work you do ships and moves the numbers that matter.
You'll own the full end-to-end lifecycle: from business context and model research to automated pipelines and retraining, working closely with senior leadership to translate model insights into commercial strategy.
Key Responsibilities
- Own the end-to-end forecasting and price-elasticity models at the core of our pricing engine - from feature and model research through evaluation, deployment, and continuous monitoring
- Scale the forecasting architecture to meet growing demand for granular, product-level forecasts
- Design and run pricing experiments and A/B tests, and turn the results into clear, strategic recommendations for leadership
- Generate commercial insights through deep-dive analyses of pricing elasticity, customer behavior, market dynamics, and competitive positioning
- Partner with senior stakeholders across Commercial, Marketing, Product, and Operations to surface opportunities and solve complex business problems
- Establish best practices for analytics, experimentation, commercial decision-making, and AI usage
Requirements
- 5+ years in a Data Science role, ideally in e-commerce or marketplace environments
- A quantitative degree in Machine Learning, Computer Science, Mathematics, Physics, or a related field
- Strong foundations in statistics, predictive modeling, and machine learning, with hands-on Python and SQL
- Hands-on experience with time series forecasting - modeling, feature engineering, and evaluation
- Experience designing and running A/B tests and experiments with measurable business impact
- A proactive, self-starting mindset
- Strong stakeholder management and comfort presenting to and influencing senior leadership
Preferred
- You use AI tools daily to work faster and push what's possible
- Knowledge of causal inference methods and advanced experimental design
- Familiarity with data visualization tools (e.g., Tableau, Looker, Power BI)
- Experience in sustainability-focused or circular economy businesses
What to Expect at rebuy
- Work with a friendly team that is passionate about circularity
- Flat hierarchies and the greatest possible transparency
- Centrally located office in Berlin (Erkelenzdamm 11-13, 10999 Berlin)
- Family-friendly, flexible environment and paid child sick leave
- Dog-friendly office
- Employee discounts, mental health offers, 30 vacation days
- On-site gym and daycare in the building