About Me Projects Articles Experience Education Contact
Resume PDF Switch to Portuguese 🇧🇷
Portfolio & Cases

Tax Intelligence Solutions

From Python automation to strategic Power BI Dashboards. Technology applied to solve complex tax problems.

#PowerBI #Python #SQL #Automation

/ Project Catalog

iFood Performance Dashboard
Marketing Analytics

Enlighten Data Story: iFood

A scientific approach to A/B Testing and statistical significance to validate marketing strategies and prevent budget waste using Python and Power BI.

Python Statistics Power BI
Case Study
View Details
Credit Risk Audit & Default Prevention
Financial Analytics

Credit Risk Audit & Default Prevention

Transactional audit of 169,000 contracts to fix a BRL 130M structural deficit in legacy models and propose Risk-Based Pricing policies.

Power BI DAX Python
Mar 2026
View Details
Cash Insurance: AI Applied to Pricing and Actuarial Risk
MACHINE LEARNING

Cash Insurance: AI Applied to Pricing and Actuarial Risk

Predictive AI engine using K-Means to resegment a health insurance portfolio, eliminating cross-subsidization and achieving a strict 75% target loss ratio via Power BI.

Power BI Python Machine Learning
Mar 2026
View Details
Bank Churn Prediction with AI
MACHINE LEARNING

Bank Churn Prediction with AI

Random Forest predictive model built in Python to mitigate bank churn, translating complex behavioral patterns into a Power BI Executive Dashboard focused on revenue protection.

Power BI Python Machine Learning DAX
Mar 2026
View Details
Customer Segmentation and Hidden Liability
MACHINE LEARNING

Customer Segmentation & Hidden Liability

Application of an unsupervised algorithm (K-Means) to a 45,000-student base to map behavioral profiles, isolate financial friction, and mitigate a churn risk of 9,626 subscriptions.

Power BI Python K-Means DAX
Apr 2026
View Details
Jurimetrics dashboard and contract preview
LEGAL ANALYTICS

Jurimetrics & Legal Ops: Bulletproof Contract with AI

Predictive & prescriptive labor analytics PoC using real TRT5 rulings. Audited BRL 1M+ in risk, mapped witness‑driven loss probabilities, and reverse‑engineered a litigation‑proof employment contract with a local LLM (Qwen2.5).

Power BI Python LLM (Qwen2.5) DAX
Mar 2026
View Details
Retail margin recovery analytics dashboard
RETAIL ANALYTICS

Margin Decline During Revenue Growth

Data Analytics and AI case study explaining why revenue grew while margin declined. Includes an interactive HTML/CSS/JS dashboard, semantic search, granular filters, anonymized data, and a profitability recovery simulator.

HTML/CSS/JS AI Retail Finance
May 2026
View Details

Liked the portfolio? Share or get in touch.

Share on LinkedIn Talk to Darlan