I will fix bugs in your asp net, dotnet core, or c sharp app within 24 hours

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Ugurhan G.

About this gig

That bug is costing you users, sales, or sleep. Send it to someone who has debugged systems where failure wasn't an option.


12+ years of .NET (C#) experience across enterprise production systems: a 150M+ row data migration for Turkey's largest telecom (zero data loss), e-commerce platforms serving millions of daily users, and banking websites that had to pass penetration tests. I've been the person teams call when nobody else can find it.


I fix:

  • Exceptions, crashes, 500 errors in ASP.NET, .NET Core, MVC, Web API
  • - Entity Framework and SQL issues: slow queries, deadlocks, wrong results
  • - Async/await bugs, memory leaks, performance problems
  • - Broken integrations: payment gateways, external APIs, auth and JWT
  • - Legacy apps nobody dares to touch - including AI-generated code that almost works

Every fix comes with a root-cause explanation so it stays fixed. Clean commits you can review, not mystery patches.


24-hour delivery on the basic package. Message me the error before ordering - I'll confirm scope honestly, and tell you if it's bigger than a gig.


Your app back on its feet, properly.

Get to know Ugurhan G.

Ugurhan G.

Senior Fullstack NET Developer, AI Integration, MCP and Umbraco Expert

  • FromTurkey
  • Member sinceMar 2017
  • Avg. response time1 hour
  • Languages

    English
Senior Full Stack .NET Developer with 12+ years building enterprise systems: a 150M+ row data migration for Turkey's largest telecom, e-commerce platforms serving millions of daily users, and 25+ banking websites across 15 countries. Today I combine that engineering depth with production AI: LLM integrations, RAG pipelines, custom MCP servers (published open-source author), and intelligent automation. Need a critical bug fixed in 24 hours, an Umbraco site upgraded, or AI wired into your .NET app? You get senior-grade code - tested, documented, delivered fast.