Alex Kondratenko
I work on software that needs to function reliably in day-to-day business use — desktop applications, backend systems, automation, integrations, and modernization of existing codebases. My core stack includes C#, .NET, WPF, ASP.NET Core, SQL, Office automation, and practical system design.
Web Systems & Backend APIs
Design and development of web applications, backend services, REST APIs, and system integrations using ASP.NET Core, SQL, and related technologies. Focused on performance, maintainability, and clean business logic for systems that support real operational workflows.
Desktop Applications
Development of Windows desktop software in C# and .NET, including WPF and WinForms solutions for data-heavy workflows, internal tools, operator interfaces, and other business-critical tasks. Built with emphasis on reliability, usability, and long-term maintainability.
System Architecture & Design
Clear and practical system architecture for software that needs to remain understandable, scalable, and maintainable as requirements evolve. Covers application structure, component boundaries, data flow, integration design, and technical decisions that reduce long-term complexity.
Legacy System Modernization
Improvement, refactoring, and modernization of existing systems built with older .NET, VB.NET, Delphi, or related technologies. The goal is to extend system life, reduce technical debt, and improve maintainability without unnecessary disruption to business operations.
Automation & Integrations
Automation of repetitive workflows, document handling, Office and Excel processing, file import/export, and integration between business systems. Designed to reduce manual work, improve accuracy, and connect disconnected parts of existing processes.
Custom Business Software
Development of tailored business applications designed around real operational needs rather than generic one-size-fits-all tools. Suitable for internal systems, workflow software, data-driven applications, and other solutions that must fit existing business processes reliably.
