Samuel Maina

Crime Insights & Trends Analysis Dashboard

Project Overview This project involved the end-to-end processing of a large-scale crime dataset containing over 40,000 records. The goal was to transform raw, unstructured data into a high-impact, interactive dashboard to drive...

SQL Data Engineering: Cleaning & Structuring the EV Dataset

Before building the frontend visualizations, I handled the end-to-end data engineering and cleaning for the Electric Vehicle population data using PostgreSQL/SQL syntax within DBeaver.

Technical Database Operations...

Amazon Sales Performance Dashboard

Developed a fully interactive, dynamic e-commerce dashboard inside Microsoft Excel to analyze sales trends, operational fulfillment metrics, and distribution performance for Amazon sales data.

Key Features & Analytical Breakdown:

Executive...