I’m a full-stack .NET developer with over 20 years of experience modernizing legacy systems, building backend services, and developing internal tools using C#, VB.NET, and SQL Server. I got my start programming on TRS-80 Color Computers using line-numbered BASIC, and deepened my skills in C, Pascal, and Assembly while studying robotics and electronics at Albuquerque TV-I. These early foundations shaped my passion for building reliable, purpose-driven software — a focus I've carried forward through projects in e-commerce, warehousing, and public sector systems.

• Refactor and maintain legacy systems using C#, VB.NET, .NET Framework, and NServiceBus
• Build tools for order fulfillment, inventory, and shipping workflows (including packing stations and real-time dashboards)
• Integrate with third-party systems like UPS, FedEx, ShipEngine, and legacy accounting platforms
• Write and optimize SQL Server queries, stored procedures, and reporting flows
• Explore new techniques through personal projects and coding challenges

While most of my professional work is proprietary, this GitHub includes a few representative and learning-oriented projects:

• 🔧 SmarterMail.Cli: A small C# CLI utility for interacting with SmarterMail's API
• 🎄 AdventOfCode2021: My C# solutions for Advent of Code 2021
• 🎄 AdventOfCode2024: My C# solutions for Advent of Code 2024
• 🧮 MathApp: A lightweight math-focused application prototype to demonstrate OOP concepts

I use this space to practice modern syntax, test utility ideas, and explore algorithmic challenges in a way that complements my production experience.

• Consultant / Developer – Quatmann Consulting (2021–2025)
  Built internal grant management and reporting tools using C#, ASP.NET, and SQL Server. Cleaned and normalized existing data. Created data validation workflows and administrative features for public sector clients.

• Senior Software Engineer / Team Lead – Jack’s Small Engines (2014–2022)
  End-to-end support and modernization of legacy systems using C#, VB.NET, .NET Framework, and .NET Core. Refactored a large monolith into a service-oriented backend using NServiceBus, Web API, and SignalR.
  Built touchscreen warehouse tools integrated with inventory/accounting systems and shipping APIs (UPS, FedEx, ShipEngine, Stamps.com).
  Developed internal and external UIs with Bootstrap, jQuery, Telerik, and WinForms. Maintained SQL Server databases and supported Azure-based infrastructure.

• Senior .NET Developer – Canton Group (2012–2014)
  Modernized Maryland state systems for elections and education using C#, ASP.NET, MVC/Web API, and Entity Framework, SQL Server, and Oracle.
  Refactored data access layers and contributed to UI/UX upgrades for internal users.

• Lead Developer / DBA – City of Baltimore IT (2006–2012)
  Led a team of 12 developers building city-wide applications for payments, permits, and public services.
  Architected reusable service layers in VB.NET, C#, and ASP.NET, including PDF generation, email delivery, mainframe integration, and GIS overlays.
  Built SQL Server backends, enforced coding standards, and introduced TFS for version control.

• Developer / Analyst / Network Admin Roles – Various (1998–2006)
  Developed internal and customer-facing systems in VB6, ASP, and early .NET technologies.
  Managed Windows/Novell/Citrix environments, performed server migrations, and automated administrative tasks using scripting tools and custom utilities.

• Learning modern .NET Core practices and exploring test automation workflows
• Continuing Advent of Code challenges as a way to sharpen logic and syntax
• Experimenting with personal tools in C# to streamline repetitive tasks
• Interested in legacy modernization, internal tool development, and hybrid backend roles

• 💼 LinkedIn

Thanks for stopping by! Feel free to browse or reach out via LinkedIn.