Darrell Mortalla
Data Analyst | Python · SQL · Excel · Power BI · Tableau · Cloud
I specialize in using AI to build end-to-end analytics workflows — from cleaning and modeling data to multi-cloud deployment of dashboards and automated BI pipelines.
I specialize in using AI to build end-to-end analytics workflows — from cleaning and modeling data to multi-cloud deployment of dashboards and automated BI pipelines.
Retail Sales dashboard with AWS deployment.
End-to-end data wrangling workflow with validation scripts.
Customer Churn tracker deployed on Azure.
Statistical profiling and churn behavior analysis.
COVID-19 trend analysis with GCP integration.
Automated Excel reports and charts powered by Python scripting.
Marketing Campaign ROI analytics.
Cross-channel marketing performance with Power BI dashboards.
E-commerce order automation using Python + Excel.
Visual storytelling with Tableau and automated ETL using Python.
Financial KPI tracking via SQL + Power BI.
Optimized queries for pricing and profitability insights.
Customer segmentation & RFM analysis with Tableau.
Machine-learning-based forecasting and customer insights.
Supply Chain efficiency modeling with Power BI.
Advanced segmentation and dashboard-driven optimization.
Marketing campaign inference modeling.
Statistical testing to identify significant marketing strategies.
Time-series prediction using Python + Power BI.
Forecasting future trends using ARIMA and Prophet models.
Dimensional warehouse schema (SQL + Power BI).
Data modeling and ETL processes for BI systems.
Storytelling dashboard for business leaders.
Executive-level reporting with key insights visualized in Power BI.
End-to-end analytics pipeline on AWS + Power BI.
Integrated ETL, storage, and BI pipeline demonstrating full-stack analytics workflow.