Upwork home
Sign up
Project Catalog
DesignDesign
Video & AudioVideo & Audio
Development & ITDevelopment & IT
MarketingMarketing
Writing & TranslationWriting & Translation
MoreMore

You will get Build a Robust RESTful API | .NET Core

Sami U.Status: Offline
Sami U. Sami U.
5.0
Rising Talent
Preview image

Let a pro handle the details

Buy Web Application Programming services from Sami, priced and ready to go.
Sami U.Status: Offline
Sami U. Sami U.
5.0
Rising Talent
Preview image

Let a pro handle the details

Buy Web Application Programming services from Sami, priced and ready to go.

Project details

I will develop a robust, scalable, and secure REST API using .NET Core Web API following industry best practices. Whether you need a custom API, secure authentication (JWT), or third-party integrations, I will deliver a production-ready backend solution.
Deliverables:
Custom RESTful API
Secure authentication system (OAuth2, JWT)
CRUD endpoints for your data models
API documentation (Swagger or Postman)
Database integration (SQL or NoSQL)
Deployment setup (AWS, Azure)
Programming Languages
JavaScript, ASP.NET, C#
Coding Expertise
Localization, Performance Optimization, Security
What's included
Service Tiers Starter
$200
Standard
$500
Advanced
$1,500
Delivery Time 2 days 4 days 10 days
Number of Revisions
34Unlimited
Design Customization
-
-
Content Upload
Responsive Design
-
-
Source Code
Optional add-ons You can add these on the next page.
Delivery Time (+ 1 Day)
+$200
5.0
2 reviews
100% Complete
(2)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)
1% Complete
(0)

BA

Brian A.
5.00
May 25, 2026
Needed .NET developer to Build GraphQL API with RabbitMQ Integration Sami is very quick to understand the business objectives, brilliant with technical solutions, and super responsive and easy to communicate with!

US

Umair S.
5.00
May 18, 2026
ASP.NET Core + Angular Developer Needed -- Update Feature Great work from Sami. He was able to understand my requirements and successfully complete the project.
Sami U.Status: Offline

About Sami

Sami U.Status: Offline
.NET Core Backend & Full-Stack Engineer | C# | Angular | React
100% Job Success
5.0  (2 reviews)
Bahawalnagar, Pakistan - 1:44 pm local time
Expert in Full-Stack Web application development, Legacy migration, and Long-term support using .NET Core, C#, Blazor, MVC, Web API, and modern JavaScript frameworks (Angular & React).

I focus on clean architecture, scalable APIs, and robust systems that perform consistently in real operational environments.

𝗞𝗲𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲:


Full-Stack Applications: End-to-end development from database to UI
Legacy Modernization: Migrating outdated systems to modern .NET Core solutions
Long-Term Support: Maintainable code that evolves with your business

💼𝐂𝐨𝐫𝐞 𝐓𝐞𝐜𝐡𝐧𝐢𝐜𝐚𝐥 𝐒𝐤𝐢𝐥𝐥𝐬:

.NET Core (Web API, MVC, Blazor)
C#
Entity Framework Core
Microservices & Modular Monoliths
CQRS + Mediator Pattern (MediatR)
Clean Architecture / Domain-Driven Design
RabbitMQ
Azure Service Bus
JWT
OAuth2
Identity Server
SignalR

𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁:

Angular (TypeScript, RxJS, NgRx)
React (Hooks, Context API, Redux)
Next for modern web apps
Responsive dashboards and enterprise UIs

𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀:

SQL Server | PostgreSQL | MongoDB
Database design and optimization
Complex queries and stored procedures

𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗲𝘃𝗢𝗽𝘀:

Azure (App Services, Functions, SQL, Storage, Key Vault)
Azure AI Services (Vision, NLP, Cognitive Search)
CI/CD pipelines
Docker
Kubernetes basics

📌Whether you need a custom web application, a scalable backend, or a dynamic frontend, I’m here to bring your vision to life. Let’s discuss your project and create something extraordinary!

Message me your project details, I’ll 𝐫𝐞𝐩𝐥𝐲 𝐢𝐧 less then 𝟏 𝐡𝐨𝐮𝐫 with a clear plan and honest recommendations

Thanks!!





















































Keywords:
Full-Stack .NET Developer, Backend .NET Developer, .NET Core, C#, ASP .NET MVC, Web API, RESTful APIs, Microservices, Clean Architecture, SignalR, Blazor Server, Blazor WebAssembly, Razor Pages, Angular, React, Responsive Web Design, HTML5, CSS3, JavaScript, Bootstrap, SQL Server, Query Optimization, Stored Procedures, Database Optimization, Entity Framework Core, Database Migration, Legacy System Migration, Web Forms Migration, Performance Optimization, Azure, Azure DevOps, AWS, CI/CD Pipelines, Docker, IIS, Agile Development, Entity Framework, .NET Core, .NET 6, .NET 7, .NET 8, TypeScript, Git, SOLID Principles, Dependency Injection, Unit Testing, Integration Testing



Steps for completing your project

After purchasing the project, send requirements so Sami can start the project.

Delivery time starts when Sami receives requirements from you.

Sami works on your project following the steps below.

Revisions may occur after the delivery date.

Gather Requirements

Understand your API needs, endpoints, and system requirements

Design API Structure

Plan endpoints, data models, and architecture for scalability

Review the work, release payment, and leave feedback to Sami.