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albertosvallejo/README.md

Alberto Sánchez-Vallejo

Marketing Data Scientist

I build production-oriented data science systems that transform marketing, customer and marketplace data into measurable business decisions.

My background combines 20+ years in digital marketing, SEO, paid media and business analytics with applied data science, machine learning and generative AI.

Based in Madrid, Spain.

Featured Projects

Project Business Problem Core Capabilities
Bayesian Marketing Mix Modeling — Beauty Budget allocation and incremental revenue measurement across marketing channels Bayesian MMM, PyMC, causal inference, response curves, budget optimization
Customer Churn Intelligence System — VivaMarket Brasil Customer risk detection and controlled retention activation XGBoost, SHAP, temporal validation, A/B testing, n8n orchestration
Amazon Marketplace Multiformat RAG Multilingual analysis of heterogeneous marketplace and catalog information RAG, LLMs, multilingual retrieval, multimodal data, business opportunity detection
Google Ads ROAS & Income Predictor Revenue and ROAS forecasting for paid-media planning Forecasting, machine learning, SHAP, Streamlit, marketing analytics
Google Ads Power BI Report Executive monitoring of advertising performance and conversion efficiency Power BI, DAX, data modeling, ROAS, CPA and campaign reporting

Technical Focus

Data Science & Machine Learning: Python, SQL, pandas, scikit-learn, XGBoost, time-series forecasting and model validation

Causal Inference & Experimentation: Bayesian modeling, PyMC, marketing mix modeling, incrementality and A/B testing

Explainable AI: SHAP, model diagnostics, calibration and decision-oriented reporting

Generative AI: LLMs, RAG, multilingual retrieval, AI agents and workflow automation

Marketing Analytics & BI: Google Ads, Power BI, DAX, Looker Studio, SEO and customer analytics

Current Focus

I am currently focused on roles where data science supports real business decisions:

  • Marketing Data Scientist
  • Customer Data Scientist
  • Decision Scientist
  • AI & Data Science Consultant
  • Applied AI Engineer

Contact

[LinkedIn] https://www.linkedin.com/in/albertosvallejo/ · [Email] [email protected]

Pinned Loading

  1. marketing-mix-modeling-beauty marketing-mix-modeling-beauty Public

    Bayesian Marketing Mix Modeling system — calibrated media attribution, budget optimizer, FastAPI backend and React dashboard. Built with PyMC, Docker-ready.

    Jupyter Notebook 1

  2. daily-customer-churn-predictor daily-customer-churn-predictor Public

    End-to-end churn prediction pipeline for a Brazilian marketplace · XGBoost · SHAP · n8n · Spec-Driven with The Architect v1

    Jupyter Notebook

  3. amazon-marketplace-multiformat-rag amazon-marketplace-multiformat-rag Public

    Multiformat RAG Assistant for Amazon marketplace · LangChain · ChromaDB · FastAPI · Sentiment Analysis · LLM-as-judge · Spec-Driven

    Jupyter Notebook

  4. income-predictor-google-ads income-predictor-google-ads Public

    A falta de traducción a inglés y piloto para Negocio

    Jupyter Notebook

  5. power-bi-report-google-ads power-bi-report-google-ads Public

    Proyecto Capstone de Data Analytics: Informe de Rendimiento de Google Ads para DH Marketing Consultants. Análisis completo en Power BI con limpieza de datos, modelado estrella, medidas DAX (ROAS, C…