- DATA

BARCELONA

DATA

SCIENCE

INTERN

YOU ARE

- You are a Python-first, statistics-strong individual.

- You possess the autonomy and speed to self-direct and ship working code without step-by-step guidance.

- You are capable of explaining complex modeling choices in plain language with actionable conclusions.

- You are currently a student at a university in Spain able to sign a “convenio de prácticas”.

YOUR MISSION

- Partner with Data Analysts to solve complex problems such as probabilistic LTV, churn prediction, and forecasting.

- Build, compare, and iterate LTV models (e.g., survival/retention-based, GBMs) to produce calibrated predictions for UA and pricing.

- Predict churn windows and retention curves by app/geo/cohort to inform payback and creative strategies.

- Translate model outputs into conversion signals for Google and Meta optimization.

- Pull and transform event and purchase data from BigQuery, RevenueCat, and AppsFlyer into model-ready datasets.

- Evaluate A/B tests and pricing experiments using frequentist or Bayesian methods

YOUR SKILLS

- Core Technical:



Strong hands-on experience with Python (pandas, NumPy, scikit-learn, Jupyter).

-
Theoretical: Solid understanding of probability, hypothesis testing, regression, classification, and model calibration.

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Evidence: Ability to show at least one end-to-end model (academic or personal project).

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Nice-to-have: Experience with Bayesian modeling (PyMC/Stan), survival analysis, gradient boosting (XGBoost/LightGBM), and SQL/BigQuery.

WE OFFER YOU

- Remuneration: A remunerated full-time position providing real ownership and impact.

- Flexibility: Adaptable working hours, 25 days annual leave, and 1 month of ‘work from anywhere’ outside of Spain.

- Workspace: Private office at Norrsken House and a €5,000 budget for professional home-office equipment.

- Wellness: Option for a high-end gym membership (innerflow.es) and healthy in-office catering starting at €2-€3.

- Career: Tailored career plan with performance reviews and salary calibrations every 6 months.

📌 DATA SCIENCE INTERN (España)
🏢 Carrots
📍 España