DATA ANALYST · BUSINESS INTELLIGENCEPORTFOLIO

Working in chaos. Deciding with data.

I transform messy, operational data into clear evidence for decision-making.

Working set

Core skills

Selected evidence

Selected projects

A focused set — solutions over tools.

Project overview

This portfolio uses a small local script to display the complete multilingual case studies and image carousels. The projects remain available below, and no personal data or external application is required.

People Analytics — HR Turnover & WorkforceHistorical turnover, absenteeism and workforce stability in Power BI.
That Coffee — Inventory & Financial ControlExcel stock, pricing, alerts and profit analysis for an operational business.
Buscante — E-commerce & Customer AnalyticsSales, customer segmentation and regional behavior in Power BI.
Grain Cooperative — SQL AnalyticsLegacy-data cleaning, regional benchmarks and producer action clusters.
Crop Yield Prediction — Machine LearningPython regression workflow with model comparison and feature importance.

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Operating context

About me

André Valenga DATA ANALYST · BUSINESS INTELLIGENCE

I'm a Personnel Data Analyst with 8+ years in the Brazilian Army.

I specialize in turning messy data into reliable evidence.

What I bring

Certifications

Next decision

Let's work together

Open to international freelance and remote full-time opportunities.

Email GitHub Upwork