You will get Build a Robust RESTful API | .NET Core, Node.js
Top Rated
Project details
Need a powerful backend to support your web or mobile application?
I will develop a robust, scalable, and secure REST API using industry-standard frameworks like Django REST Framework, .NET Core Web API, or Node.js Express. Whether you need a custom API, secure authentication (OAuth2, JWT), or third-party API integration, I will deliver high-quality backend services ready for production.
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, Heroku)
I will develop a robust, scalable, and secure REST API using industry-standard frameworks like Django REST Framework, .NET Core Web API, or Node.js Express. Whether you need a custom API, secure authentication (OAuth2, JWT), or third-party API integration, I will deliver high-quality backend services ready for production.
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, Heroku)
Programming Languages
JavaScript, ASP.NET, C#Coding Expertise
Localization, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$300
|
Standard
$1,500
|
Advanced
$3,000
|
|---|---|---|---|
| Delivery Time | 2 days | 10 days | 20 days |
Number of Revisions | 3 | 4 | Unlimited |
Design Customization | - | - | |
Content Upload | |||
Responsive Design | - | - | |
Source Code |
Optional add-ons
You can add these on the next page.
-1 day
+$200
-2 day
+$400
22 reviews
(22)
(0)
(0)
(0)
(0)
This project doesn't have any reviews.
DN
Dan N.
Apr 8, 2026
React , C#, Postgres, Lambda for web based dashboard
Due to budget cuts and AI/Automations, we closed the engagement but he is amazing.
MY
Mark Y.
Apr 6, 2026
SQL Server to Postgres Migration Specialist
Asher successfully completed the PoC and we then went on to hire him for the full migration project. Professional communicator. Would recommend.
MY
Mark Y.
Apr 6, 2026
SQL Server to Postgres Migration Specialist
Asher did a great piece of work for us. He was committed to the outcome, and worked to ensure that the end migration was successful, which it was. He communicated well, and integrated into our extended team in a professional and helpful way. We will most definitely be using Asher again and I would have no hesitation in recommending him.
AS
Andre S.
Feb 4, 2026
Looking for an .Net developer for an authentication SDK
Asher was great to work with, very communicative, and provided an outcome we were happy with. We're now working with him long-term.
TS
Timothy S.
Feb 2, 2026
Stripe API Expert & Architect for Controlled Invoice Migration (Zapier/Python) – Long-term Potential
Thanks Asher, the solution works great. Thank you also for your effort till the end besides the challenges that and task deviation a long the way
About Asher
Full Stack .NET Developer| ASP.NET Core | C# | Blazor | Web API | SQL
100%
Job Success
Lahore, Pakistan - 11:18 am local time
𝗪𝗵𝗮𝘁 𝗜 𝗗𝗼 𝗕𝗲𝘀𝘁
Full-Stack Web Development: ASP .NET Core, Blazor, MVC, Angular, React, Razor Pages
Backend & API Engineering: RESTful APIs, SignalR, Clean Architecture, Microservices
Database Optimization: SQL Server, Entity Framework Core, Query & Stored Procedure Optimization
Legacy System Migration: Modernizing Web Forms and older .NET apps to ASP .NET Core with modern frontends
DevOps & Deployment: Azure, AWS, IIS, Docker, CI/CD Pipelines
𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲?
Proven Expertise: Delivered 20+ .NET projects with measurable results
Scalable Solutions: Applications designed to grow with your business
Client-Centric Approach: Clear communication, timely delivery, dedicated support
Future-Proof Development: Clean, maintainable, and well-documented code
Continuous Learning: Staying ahead with the latest technologies
Ideal Clients & Projects
Teams seeking a full-stack lead bridging C# and modern JS frameworks
Companies with existing .NET apps needing frontend refresh or full-stack migration
Projects requiring long-term maintenance and ownership
Clients seeking predictable, high-quality delivery over low-cost short-term work
𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀:
.NET Developer Upwork
.NET Development Upwork
ASP.NET Developer Upwork
ASP.NET Core Developer Upwork
C# Developer Upwork
.NET Web Development Upwork
.NET Application Development Upwork
.NET Software Developer Upwork
.NET API Development Upwork
.NET Backend Developer Upwork
.NET Full Stack Developer Upwork
ASP.NET MVC Developer Upwork
.NET Core Developer Upwork
.NET Microservices Developer
.NET REST API Developer
.NET Web API Development
.NET Enterprise Application Development
.NET Database Development
.NET SQL Server Developer
.NET Azure Developer
.NET Cloud Application Development
.NET Integration Developer
.NET Performance Optimization
.NET Maintenance and Support
.NET Migration & Upgrade Services
𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀
Full-Stack .NET Developer, Backend .NET Developer, ASP .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, Amazon SP-API, SOAP API, 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
𝐀𝐯𝐚𝐢𝐥𝐚𝐛𝐢𝐥𝐢𝐭𝐲
Part-time or full-time contracts
Reliable US/EU timezone overlap
𝗟𝗲𝘁’𝘀 𝗕𝘂𝗶𝗹𝗱 𝗦𝗼𝗺𝗲𝘁𝗵𝗶𝗻𝗴 𝗘𝘅𝘁𝗿𝗮𝗼𝗿𝗱𝗶𝗻𝗮𝗿𝘆!
Send me your project details, and I’ll reply in less than 1 hour with a clear plan and honest recommendations.
Ready to accelerate your roadmap? 𝐂𝐥𝐢𝐜𝐤 “𝐈𝐧𝐯𝐢𝐭𝐞” or message me with a quick brief, and I’ll outline a solution within 24 h.
Steps for completing your project
After purchasing the project, send requirements so Asher can start the project.
Delivery time starts when Asher receives requirements from you.
Asher works on your project following the steps below.
Revisions may occur after the delivery date.
Send Requirements.
I would need a detailed requirement doc & and a meeting to finalize the project's scope.