I will fix and optimize your slow asp net core web API

Is your ASP.NET Core Web API slow, timing out, or behaving unpredictably under load? I find the root cause and fix it, not a band-aid, an actual fix you can explain to your team.

Most slow APIs come down to a small set of repeatable causes: N+1 database queries, missing indexes, unbounded result sets, or unnecessary EF Core change tracking. I diagnose which one(s) are hurting you and rewrite the query/endpoint properly.

Proof, not just claims: in a demo project, I took an endpoint from 35ms to under 1ms a ~35x improvement by restructuring a single Entity Framework query. Same approach I will bring to your codebase.

What I will do:

• Diagnose slow endpoints, timeouts, or crashes
• Fix N+1 queries, bad indexes, inefficient LINQ/EF Core
• Add proper pagination, filtering, or caching where needed
• Explain the fix in plain language, not just ship code silently

3+ years professional experience with ASP.NET Core, C#, SQL Server, and EF Core. Microsoft Azure certified (AZ-900).

Message me with your issue before ordering a quick description of the problem (error, slow endpoint, symptoms) helps me scope it accurately and avoid back-and-forth later.