Seven years building software for businesses where mistakes are expensive: freight brokerages, hospitals, factory floors, online stores. In each one, the hard part was understanding how the work actually gets done, who it gets done by, and what breaks when the software gets it wrong. The code came after that.

LinkedIn · yshchehliuk@gmail.com · disit.tech

Start with the person doing the job. Before designing anything, I find out how the dispatcher, the operator or the clinician does the work today and where it hurts. Software that ignores that gets worked around.

Price the failure. Know what it costs when the system is wrong, a rejected invoice or a stale reading on a production line, and design for that case first.

Ship the smallest thing that pays for itself. Then grow it with real usage, not guesses.

Make what's there work together. Every business already runs on systems that were never meant to talk. Connecting them usually beats replacing them.

_{Built with C# (.NET Standard 2.0 and .NET 8), compiled to WebAssembly for the browser. No dependencies, MIT licence.} ▶ Try it live

_{Built with .NET 8 and Angular, with tests and CI.}

_{Built with .NET 8, OPC UA, SignalR and Angular.}

fmcsa-carrier-check: brokers check a carrier before every load and usually pay a subscription for it. This puts the free government data on one page: authority, insurance, safety rating, inspections.

ECommerce-Restaurant: an online ordering system split into services, so the menu, basket and orders can each change without taking the others down.

_{Open to senior full-time or contract roles, remote or in Chicago. Corp-to-corp through DIS IT LLC.}