You will get scalable ASP.NET Core Web API development
Top Rated
Project details
I build scalable, secure, and production-ready ASP.NET Core Web APIs for modern applications and enterprise systems.
With 18+ years of experience as a Top Rated .NET developer (100% Job Success, 9000+ hours), I help businesses design and develop backend systems that are reliable, maintainable, and built for growth.
This catalog is ideal if you need:
✔ New ASP.NET Core Web API development
✔ REST API architecture & implementation
✔ Authentication (JWT / OAuth)
✔ SQL Server / database integration
✔ Third-party API integrations
✔ Clean architecture / layered design
✔ Azure deployment-ready backend solutions
✔ High-performance scalable backend services
I follow clean coding standards, async best practices, structured logging, and production-ready architecture.
If needed, I can also support Angular, React, Blazor, or Razor Pages integration.
Let’s build a backend that scales with your business.
With 18+ years of experience as a Top Rated .NET developer (100% Job Success, 9000+ hours), I help businesses design and develop backend systems that are reliable, maintainable, and built for growth.
This catalog is ideal if you need:
✔ New ASP.NET Core Web API development
✔ REST API architecture & implementation
✔ Authentication (JWT / OAuth)
✔ SQL Server / database integration
✔ Third-party API integrations
✔ Clean architecture / layered design
✔ Azure deployment-ready backend solutions
✔ High-performance scalable backend services
I follow clean coding standards, async best practices, structured logging, and production-ready architecture.
If needed, I can also support Angular, React, Blazor, or Razor Pages integration.
Let’s build a backend that scales with your business.
Programming Languages
ASP.NET, C#Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$150
|
Standard
$450
|
Advanced
$1,000
|
|---|---|---|---|
| Delivery Time | 2 days | 5 days | 10 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 2 | 3 |
Design Customization | - | - | |
Content Upload | - | ||
Responsive Design | - | - | |
Source Code |
49 reviews
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JM
Jaliyl M.
Jun 3, 2026
Senior .NET Backend Architect
Highly recommend! The work was excellent. We had to close the contract only because my side wasn't fully prepped to continue, but I will definitely rehire him once the project is ready to kick off again. Great experience overall.
JI
Joe I.
Apr 10, 2026
Full Stack Developer
Great developer! I've hired Yasir before and would hire him again!
EM
Elie M.
Jan 21, 2026
Full stack dev for e-commerce project
Yasir is very skilled in software development and architecture, a good communicator, and detail-oriented. It's been a pleasure to work with Yasir, and I highly recommend him.
PS
Prem S.
Jun 16, 2025
Azure backend
Good skills with Azure, .Net. Helped to build API's, and to bring suggestions for best practices. Will work with Yasir again!
JI
Joe I.
Sep 11, 2024
.NET API Developer in Azure
Yasir did a great job jumping in and getting started right away. It was easy to talk with him about complex concepts. He reviewed the existing coding patterns, implemented new work following those patterns, and was open to feedback and suggestions during code reviews.
He successfully created integrations with Stripe and RevenueCat, demonstrating his ability to handle complex integrations. Additionally, he took the initiative to learn how to make updates to our Terraform automation and GitHub Actions pipelines so that he could assist further. Yasir worked with various Azure services, including Cosmos DB, SQL, and Azure Container Apps, effectively integrating these into the project. He received feedback on pull requests professionally and showed a genuine interest in implementing them correctly.
I would definitely hire him again.
He successfully created integrations with Stripe and RevenueCat, demonstrating his ability to handle complex integrations. Additionally, he took the initiative to learn how to make updates to our Terraform automation and GitHub Actions pipelines so that he could assist further. Yasir worked with various Azure services, including Cosmos DB, SQL, and Azure Container Apps, effectively integrating these into the project. He received feedback on pull requests professionally and showed a genuine interest in implementing them correctly.
I would definitely hire him again.
About Yasir
Full Stack .NET Developer | Azure | ASP.NET Core | Angular | React
100%
Job Success
Rawalpindi, Pakistan - 10:26 am local time
✔ 18+ years of enterprise software development
✔ 60+ projects delivered | 9000+ hours worked on Upwork
✔ Azure Certified (Developer Associate + Cosmos DB Specialty)
✔ Trusted by international clients including FDM, Danx, and Atea
✔ AI-assisted development (Claude/Copilot) for faster delivery with strong test coverage
⭐ WHAT CLIENTS SAY
✔ "Yasir did a great job jumping in and getting started right away... open to feedback and suggestions during code reviews."
✔ "Yasir joined us when we needed a developer immediately, he quickly understands the requirements and did quality work."
✔ "Very skilled in software development and architecture, a good communicator... a pleasure to work with."
💡 HOW I CAN HELP YOU
✔ Build scalable ASP.NET Core Web APIs & microservices
✔ Design and deploy secure Azure cloud solutions (Functions, App Services, Cosmos DB)
✔ Develop full-stack apps with Angular, React, Next.js, or Blazor
✔ Upgrade legacy .NET Framework / Web Forms apps to modern architecture
✔ Fix critical production issues and improve performance
✔ Integrate third-party APIs and automate workflows with AI tools
🛠 CORE TECH STACK
✔ C#, ASP.NET Core, .NET Web APIs, .NET 8/9
✔ Azure (Functions, App Services, Storage, Cosmos DB, DevOps/CI-CD)
✔ Angular, React, Next.js, Blazor (WASM & Server), TypeScript
✔ SQL Server, Entity Framework, REST APIs
✔ Git, Agile, AI-assisted development workflows
☁️ CERTIFICATIONS
✔ Microsoft Certified: Azure Developer Associate
✔ Microsoft Certified: Azure Fundamentals
✔ Microsoft Certified: Azure Cosmos DB Developer Specialty
I am available to start quickly and can work independently or embed with your existing team. Whether it's a new build, a legacy upgrade, or an urgent fix, invite me to your job and let's get started.
Steps for completing your project
After purchasing the project, send requirements so Yasir can start the project.
Delivery time starts when Yasir receives requirements from you.
Yasir works on your project following the steps below.
Revisions may occur after the delivery date.
Requirement Analysis
Review requirements, architecture, and define API scope.
API Design & Development
Design scalable architecture and develop secure ASP.NET Core APIs.