Open to opportunities

Mario Rodríguez Lallana

@mariorodrguezlallana

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Senior data analyst driving product-led growth through analytics, experimentation, and AI-powered insights.

Spain

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What I'm looking for

I seek a product-focused analytics role where I can apply experimentation, AI/LLM integrations, and cross-functional leadership to drive measurable CX and revenue outcomes.

I am a senior data analyst with deep experience turning data into product and CX impact, combining analytics, experimentation and AI to reduce churn and increase revenue. At Bestinver I partnered with an AI startup to build an LLM-powered transcript analysis tool and designed lifecycle dashboards that uncovered friction points.

Previously at Grupo MásMóvil (MasOrange) I owned end-to-end CX analytics (SQL, Python, GCP), led a predictive churn model that cut churn 50% in the treated group, and managed teams of 3–6 analysts while delivering automated reporting and exec-level recommendations.

I have consulting experience designing data warehouses and optimization algorithms, and I build product-focused projects (Wildy marketplace/SaaS, Wellme mobile app) using modern stacks including Node.js, React, TypeScript and LLM integrations. I prioritize actionable insights, cross-functional collaboration, and measurable outcomes.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Analyst

Current

Bestinver Asset Management

Sep 2023 - Present (2 years 10 months)

Partnered with an AI startup to build an LLM-powered transcript analysis tool that flagged churn risks and cross-sell opportunities; designed customer lifecycle dashboards and ran A/B tests yielding a 30% uplift in test markets.

A B Testing SQL Python BigQuery Dashboarding LLMs Customer Journey LLM

Data Analyst

Grupo MásMóvil

Jan 2021 - Sep 2023 (2 years 8 months)

Owned CX analytics end-to-end using SQL, Python and GCP; led a predictive churn model project that achieved a 50% churn reduction in the treated group and managed a team of 3–6 analysts to deliver dashboards and automated reports.

SQL Python GCP)Churn Modeling KPI Design Dashboards Team Leadership GCP

Data & Analytics Consultant

Jun 2019 - Jan 2021 (1 year 7 months)

Designed data warehouse and star schema models for retail clients, supported a global PMO to unify definitions and improve MDM, and built an optimization algorithm to improve hospital operating room scheduling efficiency.

Data Modeling SQL Data Warehousing MDM Optimization Stakeholder Management Python Analytics & Strategy