.NET Developer for ASP.NET Core API Bug Fixes

We are looking for an experienced C#/.NET developer to troubleshoot and fix a few issues in an existing ASP.NET Core Web API application. This is a small fixed-price project. The application is already developed; we need someone who can quickly understand the existing code and resolve the identified issues without introducing unnecessary changes. The specific issues, codebase details, and other project information will be discussed with the selected developer after the contract is started. We are looking for someone who is comfortable working with an existing codebase and can independently investigate, identify the root cause, and implement reliable fixes.