About Rubén
Do you have data but lack the insights to make decisions?
I help companies, especially in the Retail sector, transform their data into operational profitability.
I am an Engineer and Data Scientist with strong business acumen (MBA in progress). After 5 years as a Big Data Specialist at Inditex, leading strategic projects for Finance , HR and Operations, I now bring that expertise to your business.
What do I bring to your project?
Hybrid Vision: I translate complex business needs into scalable technical solutions.
Business Intelligence: I design dashboards that teams actually use (focused on UX and performance).
Data Strategy: Definition of roadmaps and architectures in the cloud.
Advanced Analytics: Sales predictions, Analysis frameworks or Marketing Mix Modelling.
I don't just deliver code or reports; I design tools that impact the bottom line.
Skills:
Retail, Business Intelligence, Data Strategy, Snowflake, Power BI, Databricks, Machine Learning, Marketing Mix Modelling
Spanish
Native or bilingual
English
Fluent
French
Conversational
Remote only
Primarily works remotely
Experience
- Pull & BearBig Data SpecialistJune 2021 - March 2025 (3 years and 9 months)Led projects at the intersection of business strategy and advanced analytics for Pull&Bear, a brand of Inditex, the world's largest fashion retailer.Enterprise BI & UX: Designed and deployed a mission-critical Power BI ecosystem (10k+ monthly visits, 500+ active users). Focused on high-performance UX/UI and implemented scalable Row-Level Security (RLS).Data Engineering & Architecture: Architected complex business logic in Snowflake and optimized CI/CD pipelines to ensure data governance. Played a key role in the migration from legacy systems (Microstrategy) and Delta Lake to Snowflake.Strategic Leadership: Co-defined data roadmaps with Directors of Finance, HR, and Operations. Led a data-driven marketing strategy that resulted in tripling investment across two key markets.Advanced Analytics & AI:Developed Sales Forecasting models (Databricks) to optimize stock allocation.Created Customer & Product Clustering models that directly influenced operational decisions, such as updating the global sizing system.Built a Marketing Mix Model (MMM) to predict and simulate ROI on marketing spend.
- C&F Building ContractorsSite EngineerDecember 2018 - November 2020 (1 year and 11 months)Managed logistics, production, and on-site supervision for three construction projects (€20M combined value).Relevance to Data: Gained first-hand understanding of operational bottlenecks in construction, providing the domain knowledge necessary to apply Data Strategy in the AECO (Architecture, Engineering, Construction and Operations) sector.
- University of A CorunaVisiting ResearcherRESEARCHMarch 2017 - February 2018 (11 months)R&D focused on real-time motion capture systems using Kalman filters.Achievement: Published two international papers, demonstrating strong capabilities in complex mathematical modeling and algorithm optimization.
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Education
- MSc Data ScienceEF Business School2022
- MBAUniversidad Oberta de Catalunya2026