Archive — 08 works · scroll, one case fills the screen

Case Studies

01 // Data Case Study

Revenue Leak Detection

End-to-End E-commerce Conversion Funnel Optimization.

Google BigQuerySQLPython

$1.14M+

Revenue leakage identified

73,961 drop-offs · View → CartFig. 01

02 // Analysis & Model

Customer Churn Prediction

Business-aware retention optimization using threshold tuning and ROI analysis.

PythonScikit-LearnStreamlit

$106K+

Net ROI modeled

Cost matrix · threshold sweepFig. 02

03 // Data Case Study

Customer Segmentation & Revenue Analysis

Strategic RFM Segmentation to identify revenue concentration and retention risk.

MySQLPythonPower BI

~80%

High-value revenue share

RFM · rule-based segmentsFig. 03

04 // Analysis & Model

Demand Forecasting & Inventory

End-to-End Decision-Support System for Retail Supply Chains.

PythonXGBoostStreamlit

4.01%

Best WAPE error

45 locations scaledFig. 04

05 // Data Case Study

Sales Performance & Territory Optimization

E-commerce sales analysis identifying revenue concentration and scalability.

MySQLPythonTableau

R$13.59M

Total sales revenue

98,666 orders · avg R$120.65Fig. 05

06 // Interactive Dashboard

Customer Support SLA & Satisfaction Analysis

Interactive Excel dashboard identifying SLA breaches and satisfaction drivers.

Microsoft ExcelPivot TablesData Validation

47.29%

Resolution SLA breach

2,800 tickets · Excel dashboardFig. 06

07 // Flagship System

Vizzy Pilot

Natural language to validated SQL. Features an interactive BI canvas with automated data cleaning and hybrid execution routing.

React 19FastAPIDuckDB

<65ms

p95 multi-aggregation

100MB ingested & cleaned in 2.3sFig. 07

08 // Flagship System

DNA — Local AI Assistant

A fully local voice assistant engineered for low-end hardware (Intel i3, 8GB RAM, no GPU).

PythonGemma 4openWakeWord

Zero GPU

Intel i3 · 8GB RAM

INT8 faster-whisper · openWakeWordFig. 08