Ivan Karaush

I’m a .NET backend developer with 4+ years of experience building scalable enterprise applications, microservices, and AI-powered solutions. I focus on designing distributed systems that stay reliable under real-world load, while keeping the codebase clean through SOLID and proven patterns.

In my current role as a Middle .NET Developer, I design and build ASP.NET Core microservices and REST APIs, using MassTransit for asynchronous communication. I work across PostgreSQL and MS SQL Server, containerize services with Docker, and apply SOLID principles and design patterns—backed by unit tests with xUnit and NUnit.

Across previous projects, I decomposed monoliths into microservices, optimized SQL queries, and refactored legacy components to improve performance and delivery speed. I’ve improved service performance (up to 80% and 70% in different contexts), automated AI-driven workflows for faster processing, and increased reliability by implementing event-driven approaches (Saga Pattern and Domain Events).

I also bring hands-on AI/LLM integration experience, including RAG pipelines, Semantic Kernel, MCP, and LLM context management. On selected projects like an AI Code Review Platform and a Medical Information Platform, I integrated modern tooling and collaboration workflows to turn AI capabilities into practical backend systems.