I will fix debug and optimize asp net core web and API

R
rakibhasan7997
R
rakibhasan7997
Md Rakib Khan
fix debug and optimize asp net core web and API
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fix debug and optimize asp net core web and API
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fix debug and optimize asp net core web and APIfix debug and optimize asp net core web and APIfix debug and optimize asp net core web and API

About this gig

Is your C# ASP.NET Core Web API running slow, throwing unexpected runtime exceptions, or broken after an update? I am here to help you troubleshoot, resolve issues, and optimize your backend application for maximum performance.


What I Can Fix & Optimize for You:

  • Bug Fixes & Debugging: Resolve null reference exceptions, runtime crashes, and CORS issues.
  • Performance Optimization: Refactor slow endpoints, implement caching (In-Memory/Redis), and utilize async/await properly.
  • Database & Query Tuning: Fix inefficient Entity Framework Core / LINQ queries, N+1 query problems, and migration errors.
  • Security & Auth Fixes: Debug JWT token generation, refresh tokens, role-based authorization, and middleware issues.
  • API Integration & Deployment: Fix third-party API integration errors or Azure/AWS hosting issues.

Why Choose My Service?

  • Direct Communication: Clear updates throughout the debugging process.
  • Clean Code: Standardized, production-grade solutions that won't break existing functionality.


Please message me with your error logs, stack trace, or a brief explanation of the issue before placing an order so we can get started right away!



  • Programming language

    • ASP.NET

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Security
    • Databases

  • Frontend framework

    • Angular
    • AngularJS
    • Bootstrap
    • jQuery
    • React.js

  • Backend framework

    • ASP.NET Core

  • AI & low/no code builders

    • Claude

Get to know Md Rakib Khan

Md Rakib Khan

Expert in ASP NET Core and Angular

5.0(1)
  • FromBangladesh
  • Member sinceOct 2015
  • Last delivery2 years

  • Languages

    English
Software Developer with 5+ years of experience building scalable full-stack applications. Specialized in .NET, ASP.NET Core, MVC, and Web API for robust backend systems, with frontend expertise in Angular and JavaScript. Skilled in MS SQL and MongoDB, performance optimization, and clean architecture. Experienced in agile teams at Fulfillment Team and DISA Global Solutions, delivering reliable, high-impact solutions that help businesses grow through technology.

My Portfolio

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