I’m a Backend Software Engineer focused on C#/.NET development. I currently work on a large B2B enterprise platform built with .NET, SQL Server, Angular, and TypeScript across a distributed system of more than 30 services.
My main backend stack includes C#, .NET 8/10, ASP.NET Core, Entity Framework Core, Dapper, REST APIs, LINQ, SQL Server, and OAuth 2.0 / OpenID Connect. I also work with Azure, AKS/Kubernetes, Docker, Helm, Git, CI/CD, and automated testing.
In my current role, I develop and maintain production functionality, work with APIs and databases, investigate issues in existing systems, and write unit and integration tests using NUnit, NSubstitute, and Testcontainers. I also contribute to Angular and TypeScript when features require end-to-end changes.
Some of my recent work includes implementing runtime-configurable OpenID Connect providers without service restarts, building the related Angular UI, implementing configurable rate limiting, and identifying and fixing an authentication/session-management issue involving manipulated cookies.
I’m especially interested in backend engineering, distributed systems, cloud infrastructure, authentication and security, API design, database performance, and reliable production software. I enjoy understanding existing systems, investigating non-trivial problems, and delivering maintainable solutions that are safe for production.
I’m looking for opportunities where I can continue growing as a .NET engineer, take more ownership, and work on products where scalability, security, and reliability matter.
LinkedIn: https://www.linkedin.com/in/savelii-korniiko
Email: saveliykorniko@gmail.com
