Senior Data Scientist

Senior Data Scientist at Tourlane

Welcome to Tourlane! We're a tech company on a mission to provide the best experience in travel. We provide fully personalized, multi-stop trips to 50 destinations around the world and counting. With over 100,000 travellers in the DACH region and France, we’re on our way to becoming Europe’s leading travel company.

We know that vacation time is precious. Our goal is to help customers discover the world and create lasting memories. We focus on creating tailor-made experiences for our customers because we believe life is too short for standard travel.

We’re looking for 2 Senior Data Scientists to join our team and embark on this journey with us.

What you will do:

• Own the Data Science behind our business steering: Unite isolated ML models into a single decision layer that powers budget allocation and conversion rate optimization, creating bottom‑line impact worth millions.
• Ship AI agents: Design, deploy, and monitor production‑grade LLM agents that improve customer experience in sales and operations while keeping humans in control.
• Predict lead quality: Develop and calibrate models that combine likelihood‑to‑book with expected order value to inform routing, lead prioritization, and threshold decisions across the funnel.
• Run deep conversion analyses: Quantify drivers across our sales funnel and separate marketing effects from operational performance using robust statistical methods.
• Ensure reliability: Ship well-documented models with calibration, drift/anomaly detection, and change controls that keep business metrics stable.
• Own broadly: Take end‑to‑end ownership across a wide range of modeling methods, moving quickly on diverse use cases to create maximum impact.

What you will need to be successful:

• STEM degree: Master’s degree or higher in a STEM field (e.g., Computer Science, Data Science, Mathematics, Statistics, Engineering, Physics)
• Proven Ownership: 5+ years of experience in Data Science, owning the full lifecycle of DS/ML products from ideation and design to development, deployment, and ongoing monitoring - embedded in a real software environment.
• Statistics depth: Strong grounding in statistical modeling, optimization, and forecasting.
• Experimentation expertise: Design and analyze online experiments beyond simple A/B tests - sequential methods, variance reduction, guardrails, and metric design.
• Agentic AI: Experience with applied LLM systems (RAG pipelines, agent workflows) and integrating them into production services, including monitoring and shipping continuous improvements.
• Strong programming skills: Proficient in building production-grade modeling pipelines in Python implementing calibration, monitoring, and drift detection. Comfortable writing SQL queries to fetch and transform data.
• Basic infrastructure knowledge: Experience with Docker, CI/CD, MLFlow, and Dagster is helpful.

What we offer:

• Highly competitive Senior Data Scientist salary for Berlin Tech Market.
• Flexible working setup to get the most of your working hours: we offer full flexibility in our Hybrid/Remote model, however we do expect that you take advantage of our lively Berlin office 2-3 days per week.
• We share your passion for traveling: enjoy working abroad through our new program (5 months of remote working PER YEAR).
• We support all the diverse communities that make us Tourlane: join or create your own Employee Resource Group (ERG) and connect with Tourlaneans.
• Dog-friendly office: we can’t wait to meet your furry friend!

Key skills/competency

• Data Science
• Machine Learning
• Python
• SQL
• Statistical Modeling
• LLM Systems
• Experimentation Design
• A/B Testing
• Production-grade Pipelines
• Model Monitoring