Portfolio

Projects & case studies

Each project starts with a business question and ends with what the evidence supports — and what it doesn't.

Power BI dashboard for the Olist e-commerce project showing revenue, delivery and review KPIs

Flagship · SQL · Power BI · Machine Learning

E-Commerce Customer Satisfaction & Predictive Analytics

An end-to-end build on 99K Brazilian e-commerce orders: a PostgreSQL pipeline, a Power BI dashboard, and a classifier that flags orders likely to receive a bad review while they are still in transit.

orders analyzed: 99K; orders analyzed
rows · 8 tables: 340K; rows · 8 tables
engineered features: 126; engineered features
recall on bad reviews: 50%; recall on bad reviews

PostgreSQLSQLPythonPandasscikit-learnPower BIDAX

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Tableau dashboard showing telecom churn rate by California city, age group, contract type and top churn reasons

Tableau · Retention Analytics

Telecom Customer Churn Analysis

An interactive Tableau dashboard examining why 6,589 California telecom customers stay or leave — by contract type, age, dependents, location and stated churn reason.

customers: 6,589; customers
overall churn rate: 28.4%; overall churn rate

Tableau PublicExcelCalculated Fields

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Tableau Global Superstore dashboard with KPI cards, calendar sales heatmap and subcategory sales bars

Tableau · Data in Motion

Global Superstore Sales Dashboard

A Tableau dashboard of Global Superstore sales from 2011–2014 tracking sales, profit ratio, quantity and shipping cost, with subcategory comparisons against the average.

sales history: 2011–14; sales history

Tableau PublicExcel

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