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You will get C# .NET Developer — Custom Web App, Bug Fix & Ongoing Support
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Project details
Need a reliable .NET developer for custom application development, bug fixing, or long-term technical support? You're in the right place.
I deliver end-to-end .NET solutions using C#, ASP.NET Core, Entity Framework, and REST APIs — built for performance, security, and maintainability.
✅ Custom .NET console, desktop & web application development
✅ ASP.NET Core Web API & MVC application builds
✅ Entity Framework Core database integration & migrations
✅ Bug fixing, code refactoring & technical debt resolution
✅ Unit testing with xUnit/NUnit & integration testing
✅ Authentication & authorization (JWT, OAuth2, Identity)
✅ CI/CD pipeline setup with Azure DevOps or GitHub Actions
✅ Ongoing maintenance, monitoring & performance optimization
✅ Clean architecture, SOLID principles & design patterns
✅ Full source code + documentation delivered
Whether you need a quick bug fix or a full enterprise application built from the ground up, I bring the expertise to deliver on time and within budget.
100% Job Success | 5+ Years .NET & C# | 2100+ Hours on Upwork | $30K+ Earned
I deliver end-to-end .NET solutions using C#, ASP.NET Core, Entity Framework, and REST APIs — built for performance, security, and maintainability.
✅ Custom .NET console, desktop & web application development
✅ ASP.NET Core Web API & MVC application builds
✅ Entity Framework Core database integration & migrations
✅ Bug fixing, code refactoring & technical debt resolution
✅ Unit testing with xUnit/NUnit & integration testing
✅ Authentication & authorization (JWT, OAuth2, Identity)
✅ CI/CD pipeline setup with Azure DevOps or GitHub Actions
✅ Ongoing maintenance, monitoring & performance optimization
✅ Clean architecture, SOLID principles & design patterns
✅ Full source code + documentation delivered
Whether you need a quick bug fix or a full enterprise application built from the ground up, I bring the expertise to deliver on time and within budget.
100% Job Success | 5+ Years .NET & C# | 2100+ Hours on Upwork | $30K+ Earned
Programming Languages
ASP.NET, TypeScript, C#Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$300
|
Standard
$600
|
Advanced
$1,200
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 20 days |
Number of Revisions | 1 | 2 | Unlimited |
Number of Pages | 3 | 8 | 15 |
Design Customization | |||
Content Upload | |||
Responsive Design | - | ||
Source Code |
Frequently asked questions
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CD
Christopher D.
Apr 3, 2026
Deploy .NET Isolated Worker Function
Muhammad is excellent to work with, extremely knowledgeable and skilled.
AW
Albert W.
Sep 15, 2024
Slider app on Azure
Muhammad was an absolute pleasure to work with.
Professional and flexible, he was amazing.
Looking forward to working with him again soon.
Professional and flexible, he was amazing.
Looking forward to working with him again soon.
ST
Sunjoyo T.
May 7, 2024
Azure DevOps Automation Specialist for On-Premise CI/CD to setup nightly build
Working with Muhammad Ismaeel was amazing. He was able to demo a solution that we asked for. He was flexible enough to accommodate our changes and delivered what we asked for. He's very knowledgeable, skillful and experienced with setting up Azure DevOps CI/CD pipeline.
AB
Alessio B.
May 7, 2024
Create net core web service in my Linux machine , based on Syncfusion pdfviewer library
Really fast and reliable person. I am very positive and suggest this developer
MH
Meredith H.
May 5, 2024
Azure Developer Needed
Muhammad did a great job of bringing my vision to life for my virtual classroom environment. He communicates well, is professional, punctual and kept his word. He kept me apprised of challenges, took the initiative to solve them, and let me know which roadblocks he needed my assistance with, etc. He kept the project moving along in a timely manner. It was an absolute joy to work with him. I look forward to hiring him for future projects. I will gladly recommend him to others, as appropriate.
About Muhammad
OpenAI API & AI Chatbot Developer|Blazor WebAssembly|.NET MAUI|ASP.NET
100%
Job Success
Lahore, Pakistan - 5:27 am local time
I build intelligent, production-ready AI solutions and modern cross-platform applications using the full Microsoft .NET ecosystem. Whether you need a custom AI chatbot powered by the OpenAI API, a responsive Blazor WebAssembly web app, a scalable ASP.NET backend, or a native cross-platform app with .NET MAUI, I deliver clean, maintainable code tailored to your business goals.
What I can do for you:
I specialize in integrating the OpenAI API (GPT models, embeddings, function calling, and RAG-based assistants) to create smart chatbots, virtual assistants, and AI-driven automation that genuinely improve user experience. On the development side, I architect high-performance applications with Blazor WebAssembly for rich, interactive front-ends, ASP.NET Core for secure and robust APIs and web services, and .NET MAUI for building single-codebase apps that run seamlessly on Android, iOS, Windows, and macOS.
Why work with me:
I focus on writing efficient, well-structured C# and .NET code, following best practices for performance, security, and scalability. I communicate clearly, meet deadlines, and treat every project from a quick chatbot integration to a full enterprise application with the same commitment to quality. My goal is to turn your idea into a reliable, future-proof product.
If you're looking for a dedicated developer who combines cutting-edge AI integration with deep .NET expertise, let's connect and bring your project to life.
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.
Let's connect and discuss your project requirement in detail.