Portfolio

Work

A curated look at applications, business tools, data systems, and the problems they were built to solve.

Portfolio projects

9 projects

Business ToolWeb Application

Free Invoice Generator

Create professional invoices with dynamic line items, payment terms, taxes, partial payments, and print-ready PDF output.

  • JavaScript
  • Shared Components
  • Local Storage
  • Print CSS
  • Intl API
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Business ToolLive Tool

Meeting Cost Calculator

Calculate the labor cost of meetings using attendee compensation, duration, frequency, and optional employer costs.

  • JavaScript
  • Financial Modeling
  • Live Timer
  • Intl API
View Project
Business ToolWeb Application

Quote & Estimate Generator

Create professional customer quotes and estimates with dynamic pricing, taxes, discounts, and print-ready PDF output.

  • JavaScript
  • Dynamic Forms
  • Local Storage
  • Print CSS
  • Intl API
View Project
Data ToolWeb Application

Excel & CSV Comparison Tool

Compare Excel and CSV datasets by matching records, identifying changed values, and finding missing data across differently ordered exports.

  • JavaScript
  • CSV
  • XLSX
  • Data Reconciliation
  • Map Indexing
View Project
Business ToolsLive Tool

Business Days & Lead-Time Calculator

A practical scheduling tool for adding working days to dates and counting business days across date ranges, with calculated U.S. federal holidays and observed dates.

  • JavaScript
  • Date Logic
  • Accessibility
  • Vite
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Business ToolsLive Tool

Margin & Markup Calculator

A multi-mode pricing calculator that makes the difference between gross margin and markup clear while solving forward and reverse pricing scenarios.

  • JavaScript
  • Financial Logic
  • Responsive UI
View Project
Web AppsWeb Application

Public Tools Platform

A reusable multi-page foundation for publishing useful business and data tools. The system centralizes navigation, metadata, accessibility patterns, related tools, structured data, and shared UI while keeping each calculator's business logic isolated.

  • Vite
  • ES Modules
  • SEO
  • Design System
  • Multi-Page App
View Project
AutomationDevelopment Work

Federal Holiday Date Engine

A lightweight scheduling engine that calculates fixed, nth-weekday, last-weekday, and observed U.S. federal holidays across years without a heavy date dependency.

  • Date Utilities
  • Business Rules
  • No Dependencies
View Project
WebsitesWebsite

Portfolio & Tools Site

A fast, responsive portfolio and public utility library built as a vanilla JavaScript multi-page application.

  • Responsive Design
  • Semantic HTML
  • Performance
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