Data Analytics Portfolio

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Colby Kellersberger



Tools I Use:

View My GitHub Profile

Excel Add-In: Internal Audit Tools

Custom Excel .xlam add-in designed to streamline internal audit fieldwork and documentation.

Audit Add-in Screenshot

đź”§ Features:

Audit Add-in Screenshot Audit Add-in Screenshot

Power BI Dashboards

Vendor Payments Monitoring

Vendor Payments Screenshot

Internal Audit Issue Tracker

Internal Audit Screenshot

Adventure Works Report

Adventure Works Screenshot

Property Management Dashboard

Property Management Screenshot

Sales Dashboard

Sales Dashboard Screenshot

Python Projects

Audit Sampling Tool

Open in Streamlit
Internal audit sampling utility for filtering, random sampling, and file export.

Audit Sampling Screenshot

Benford’s Law Audit Tool

Open in Streamlit
Statistical fraud detection tool using Benford’s Law to flag anomalies in financial data.
GitHub Repo

Benford’s Law Screenshot

Fair Lending Analysis

Open in Streamlit
Fair Lending pricing and underwriting simulator using synthetic borrower data, statistical testing, and ipywidgets UI.

Fair Lending App Screenshot

SQL Projects

Data Job Market Analysis

GitHub Repo
SQL analysis of job postings using PostgreSQL and Python to surface skill trends.

SQL Job Analysis Screenshot

Sales ETL & Dashboard

GitHub Repo
SQL-based ETL pipeline to clean and aggregate sales data, paired with a Power BI dashboard for business insights.

Adventure Works Screenshot

Excel Templates

Risk Assessment Matrix

Download a customizable Excel-based risk matrix for internal audit and compliance teams.
đź“‚ Download Template

Risk Assessment Screenshot


More Coming Soon