Open to opportunities

rafael User

@rafaeluser2

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Data scientist delivering ML-driven insights, robust data pipelines, and clear executive analytics.

Brazil

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What I'm looking for

I seek roles where I can build ML-driven solutions and scalable data pipelines, deliver actionable dashboards for stakeholders, and contribute to data-informed decision-making in collaborative teams.

I am a data scientist with hands-on experience building scalable Python and R pipelines, developing supervised and unsupervised ML solutions, and delivering executive dashboards that inform policy and business decisions.

At the Minas Gerais State Department of Education I improved model performance by ~30% using XGBoost, factor analysis, and clustering, automated workflows with R/Shiny to reduce manual processing by almost 40%, and applied Item Response Theory for psychometric analysis.

Previously at EY I integrated and cleansed complex datasets, built ETL pipelines with Alteryx, and produced automated Power BI and Spotfire dashboards to support audit and consulting teams across industries.

Experience

Work history, roles, and key accomplishments

Current

Data Scientist

Current

Minas Gerais State Department of Education

May 2025 - Present (9 months)

Built and maintained data pipelines and ML solutions that improved model performance ~30% and reduced manual processing time by ~40%, while delivering PowerBI dashboards and IRT-based psychometric analyses to inform education policy.

Python R PyTorch XGBoost Power BI ETL Item Response Theory

Data Analyst

Sep 2024 - Apr 2025 (7 months)

Collected, integrated, and cleansed data to support audit and consulting teams, built automated PowerBI/Spotfire dashboards, and optimized ETL workflows with Alteryx to improve scalability and reporting reliability.

Power BI Spotfire Alteryx SQL ETL Data Governance Data Visualization

Education

Degrees, certifications, and relevant coursework

University of São Paulo

Master of Business Administration, Data Science & Analytics

Completed a Master of Business Administration (MBA) focused on Data Science & Analytics, emphasizing data-driven decision making and advanced analytics methods.

Belo Horizonte University Center (UNIBH)

Bachelor of Science, Industrial Engineering

Earned a Bachelor of Science in Industrial Engineering with coursework in engineering principles and quantitative analysis applied to industrial systems.