Staff Data Scientist - Marketing

The role

You will own the Marketing Mix Model end to end to govern marketing budget allocation across 30 markets and channels. You will partner with Finance and performance marketing to turn model outputs into budget and strategy decisions.

What you will do

• Own the Marketing Mix Model end to end
• Turn MMM outputs into decisions for performance marketing and finance
• Steer the testing roadmap using MMM signals
• Design and run incrementality tests like geo experiments and causal inference methods
• Design a unified measurement framework tying MMM, attribution, and incrementality together
• Extend causal inference methods to Finance and Product
• Work with Data Engineering to build scalable pipelines and evolve ETL

Required qualifications

• Hands-on MMM experience
• Strong grounding in Bayesian statistics applied to MMM and causal inference
• Built or owned a marketing mix model, geo-experimentation program, or causal measurement system that steered real budget
• Experience turning model outputs into action for marketing and finance
• Experimentation expertise in designing and evaluating incrementality tests and A/B experiments
• Strong Python skills
• Strong SQL skills
• Advanced written and verbal English

Nice to have

• PhD in mathematics, economics, statistics or similar, or equivalent applied experience
• Previous experience with causal inference techniques (e.g. geo-lift testing, causal impact, synthetic control, difference in differences, etc.)
• Previous experience with tools such as PyMC, Stan, Meridian, Robyn or similar
• Experience in marketplaces or digital businesses, ideally in performance marketing

Benefits

• Open, collaborative, dynamic and diverse culture
• Generous monthly allowance for lessons on Preply.com
• Learning & Development budget and time off for self-development
• Competitive financial package with equity
• Leave allowance
• Health insurance
• Relocation package to join the Preply Barcelona Hub
• Access to free mental health support platforms
• Access to Gympass-partnered wellness and gym centers throughout Spain

About the company

Preply is a category-defining Ed-Tech company that helps people discover tutors and craft personalised learning journeys. They have reached unicorn status with a $150M Series D.