Senior Data Scientist (m/f/d)

The role

You will own and evolve the causal measurement practice by designing and running experiments to shape global marketing budget allocation. You will work with Marketing & Sales, Revenue Management, Reporting, and Engineering teams.

What you will do

• Own the design, execution, and continuous improvement of geo-based, time-based, and synthetic control experiment frameworks
• Apply econometric and causal inference techniques to measure the incremental effect of marketing activities
• Build and manage a structured test-and-learn programme across paid channels
• Contribute to the development and validation of attribution models
• Translate complex causal findings into clear, actionable recommendations for stakeholders
• Review experiment designs and create thorough documentation
• Help shape internal standards for measuring marketing effectiveness

Required qualifications

• Master's or PhD in Statistics, Econometrics, Applied Mathematics, Data Science, or a related quantitative field
• 5+ years of experience in a data science or quantitative research role
• Hands-on expertise in designing and evaluating causal experiments such as geo experiments, time-series holdouts, or synthetic control studies
• Strong command of causal inference methods including difference-in-differences, synthetic control, Bayesian structural time series, or matched market testing
• Proficient in Python, SQL, Power BI
• Experienced with statistical modelling libraries such as statsmodels, PyMC, CausalImpact, or equivalent tools
• Comfortable with version control (Git), reproducible workflows, and cloud or data warehouse environments such as BigQuery or Snowflake
• Proven ability to present statistical findings to non-technical audiences

Nice to have

• Experience in marketing measurement, media mix modelling, or growth reporting
• Familiarity with Bayesian methods

Benefits

• 12 free Flix vouchers + 12 discount vouchers for friends & family
• Work from another location for up to 60 days per year depending on role
• Hybrid work model
• Access to confidential 1:1 counselling, courses, and stress management for yourself and up to four family members
• Language classes, training courses, and expert-led sessions
• Mentoring Program

About the company

Flix offers a dynamic work environment with a tech-driven approach to making travel more accessible, sustainable, and affordable.