Muhammad isn't taking new orders for this project right now. Here are some similar projects to explore.
You will get ASP.NET Core API & MVC Bug Fixing, Optimization and Support
Project details
Are you struggling with bugs, performance issues, API errors, database problems, or authentication failures in your ASP.NET Core application?
I will help you diagnose, fix, and optimize your ASP.NET Core Web API or MVC application quickly and efficiently.
With 8+ years of experience in ASP.NET Core, C#, SQL Server, Entity Framework Core, and enterprise application development, I can resolve backend issues, API integration problems, database bottlenecks, authentication errors, and performance-related challenges.
Services include:
✔ ASP.NET Core Web API bug fixing
✔ ASP.NET MVC troubleshooting
✔ SQL Server query optimization
✔ Entity Framework Core fixes
✔ Authentication & Authorization issues
✔ API integration troubleshooting
✔ Performance optimization
✔ Code review and refactoring
✔ Deployment and configuration support
I focus on delivering clean, reliable, and maintainable solutions that improve application stability, performance, and user experience.
Contact me before placing an order so we can discuss your requirements and choose the right package.
I will help you diagnose, fix, and optimize your ASP.NET Core Web API or MVC application quickly and efficiently.
With 8+ years of experience in ASP.NET Core, C#, SQL Server, Entity Framework Core, and enterprise application development, I can resolve backend issues, API integration problems, database bottlenecks, authentication errors, and performance-related challenges.
Services include:
✔ ASP.NET Core Web API bug fixing
✔ ASP.NET MVC troubleshooting
✔ SQL Server query optimization
✔ Entity Framework Core fixes
✔ Authentication & Authorization issues
✔ API integration troubleshooting
✔ Performance optimization
✔ Code review and refactoring
✔ Deployment and configuration support
I focus on delivering clean, reliable, and maintainable solutions that improve application stability, performance, and user experience.
Contact me before placing an order so we can discuss your requirements and choose the right package.
Programming Languages
ASP.NET, TypeScript, C#Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$25
|
Standard
$75
|
Advanced
$150
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | - | ||
Detailed Code Comments | - | - |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$20 - $50
Additional Revision
+$10
Fix Documentation
(+ 1 Day)
+$15
Detailed Code Comments
(+ 1 Day)
+$20
Performance Optimization Report
(+ 1 Day)
+$25Frequently asked questions
14 reviews
(13)
(1)
(0)
(0)
(0)
This project doesn't have any reviews.
SM
Sajid M.
Jun 8, 2026
Senior .NET Core Backend & API Integration Developer
Muhammad was excellent to work with throughout the project. He is a clear communicator who kept me informed at every stage and responded quickly to questions and feedback. His professional approach, technical expertise, and attention to detail made the entire process smooth and efficient.
He proved to be highly reliable, delivered everything on time, and consistently focused on finding practical solutions whenever challenges arose. Collaboration was seamless, and he demonstrated a strong commitment to quality from start to finish.
I would highly recommend Muhammad for .NET Core development, API integrations, backend architecture, and full-stack development projects. I look forward to working with him again in the future.
He proved to be highly reliable, delivered everything on time, and consistently focused on finding practical solutions whenever challenges arose. Collaboration was seamless, and he demonstrated a strong commitment to quality from start to finish.
I would highly recommend Muhammad for .NET Core development, API integrations, backend architecture, and full-stack development projects. I look forward to working with him again in the future.
VM
Vaughn M.
Dec 13, 2025
CSS and asp.net core expert Needed for Quick Div Fix and URL
HL
Harley L.
Oct 5, 2025
You will get Develop API Integration with Stripe, Twilio, SendGrid in .NET Core
SM
Sajid M.
Sep 24, 2025
Full Stack .NET Core Developer | ASP.NET Core, Angular, SQL Server
Great job by Muhammad Atif. Delivered clean code, scalable architecture, and excellent front-end work with Angular. His expertise in .NET Core and SQL Server is impressive. Looking forward to more projects together.
SM
Sajid M.
Sep 1, 2025
Senior Full-Stack ASP.NET CORE, C#/Angular Developer (Remote)
Great experience working with Muhammad Atif. Delivered high-quality .NET Core and Angular work on time, with clean code and clear communication. Highly recommended!
About Muhammad
Senior ASP.NET Core Developer | C#, Web API, Angular, React, SQL
100%
Job Success
Lahore, Pakistan - 7:26 pm local time
I’m a Senior ASP.NET Core Developer with 8+ years of professional experience building enterprise applications across healthcare, e-commerce, CRM, retail, hospitality, education, travel, and other business domains. I work across the full development lifecycle—from architecture and development to API integration, database optimization, deployment, and production support.
My core expertise is C#, ASP.NET Core, Web API, Angular, React, SQL Server, Entity Framework Core, and REST APIs. I also work with Clean Architecture, CQRS, MediatR, Microservices, authentication, payment gateways, and third-party API integrations.
I have hands-on experience building healthcare systems and integrations involving EHR/EMR, HL7, FHIR, insurance eligibility, and external healthcare APIs. I have also integrated services such as Stripe, PayPal, Twilio, SendGrid, and other third-party platforms.
𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘆𝗼𝘂 𝘄𝗶𝘁𝗵
✔ ASP.NET Core Web API & MVC development
✔ Angular & React full-stack applications
✔ REST API design and third-party API integration
✔ SQL Server, EF Core & Dapper
✔ Clean Architecture, CQRS & Microservices
✔ Authentication & authorization (JWT, OAuth, Identity)
✔ Stripe, PayPal and payment integrations
✔ Healthcare APIs, HL7, FHIR & EHR/EMR integrations
✔ Performance optimization, debugging & production support
✔ Azure, AWS, Docker and CI/CD
I focus on writing clean, maintainable code and designing solutions that are secure, scalable, and easy to maintain.
Whether you need a new application, API integration, existing system modernization, difficult bug fixed, or ongoing development support, I can help.
Send me your requirements and I’ll explain how I would approach your project.
Steps for completing your project
After purchasing the project, send requirements so Muhammad can start the project.
Delivery time starts when Muhammad receives requirements from you.
Muhammad works on your project following the steps below.
Revisions may occur after the delivery date.
Issue Analysis & Requirements Review
Review the reported issue, error logs, screenshots, source code, and environment details to identify the root cause.
Bug Investigation & Resolution
Investigate the issue, apply fixes, test the solution, and ensure the problem is resolved without affecting existing functionality.