We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it's creating real impact.We've just reached unicorn status with a $150M Series D, accelerating our vision to transform education through human-led, AI-enhanced learning. As a category-defining company, we're shaping what the future of learning looks like at global scale.Every Preply lesson sparks change, fuels ambition, and drives progress that matters.

Joining

Preply means helping define the future of education at general scale, and building something that truly matters for millions of people, every day.Meet the teamAt Preply, we're growing a talented Data Team to empower top-notch decision-making across our organization. Our team collaborates closely with various other chapters - including product, business, and platform - leveraging analysis, experimentation, causal inference, and machine learning.You'll be embedded in cross-functional teams, partnering with our MarTech Product Manager, Marketeers, Tech Leads, and the Data Strategy team. Check out our Tech Radar to see the tools and technologies we love using at Preply!What you'll be doingCollaborate with performance marketing teams in coming up with data solutions to support the optimization of marketing campaigns, budgets and results

- Roll out Marketing Mix Modeling (MMM) to more countries and help build an automated MMM budget platform using advanced Bayesian statistics
- Design and analyze incrementality tests to measure marketing effectiveness, applying advanced methods like causal inference to quantify incremental ROI




- Design a unified system that connects the dots between MMM and incrementality results
- Shape the testing roadmap
- Design our Creative Analytics framework, developing new metrics such as creative fatigue to help scale new channels
- Improve targeting and bidding strategies by using regression models to assign predictive weights to funnel events
- Act as a sparring partner to our Applied AI team: support the roll-out of models, analyze their impact, understand feature importance, and bring both business and data science knowledge to guide these projects
- Work closely with the Data Engineering team in the creation of scalable data pipelines while guaranteeing an optimal evolution of our ETL processes, as well as the adoption of new tools and frameworks
- Contribute to cross-company initiatives in alignment with our data organization's vision
- Support proactively the application of predictive models in performance marketing channels.A pragmatic problem-solver at heart: you dig into complexity to find the simplest, most elegant path through it, guided by curiosity rather than a love of complicated models
- Extensive experience as a Data Scientist working with performance marketing teams in a B2C environment, delivering business insights and building data products
- Skilled in developing and deploying machine learning models;

Experience with experimentation (design and evaluation of A/B tests);





Experience working in Marketplaces and/or digital business environments, in the context of performance marketing

- Strong coding skills in SQL and Python
- Advanced written and verbal communication skills in English.G. geo-lift testing, causal impact, synthetic control, difference in differences, etc.)Previous experience with Databricks, Snowflake, Looker
- Previous experience withApache Spark,Knowledge of data orchestration tools (e.G. dbt and Airflow).Why you'll love it at PreplyAn open, collaborative, dynamic and diverse culture
- Com, Learning & Development budget and time off for your self-development
- A competitive financial package with equity, leave allowance and health insurance;

We offer an attractive relocation package to join us in our Preply Barcelona HubAccess to free mental health support platforms

- We do it for learners - For both Preply and tutors, learners are why we do what we do. Keep perfecting - To create an outstanding customer experience, we focus on simplicity, smoothness, and enjoyment, continually perfecting it as every detail matters.Now is the time - In a fast-paced world, it matters how quickly we act. Growth mindset - We proactively seek growth opportunities and believe today's best performance becomes tomorrow's starting point. Raise the bar - We raise our performance standards continuously, alongside each new hire and promotion. Challenge, disagree and commit - We value open and candid communication, even when we don't fully agree. We believe that the presence of different opinions and viewpoints is a key ingredient for our success as a multicultural Ed-Tech company.

📌 Data Science Data Science Senior Data Scientist (Remote) (Cataluña)
🏢 Preply
📍 Cataluña