You will get a production-ready ASP.NET Core REST API with EF Core & Swagger docs
Project details
You will get a production-ready ASP.NET Core Web API built with clean, layered architecture, not a quick prototype. With 13+ years building production .NET systems, including my own commercial software line, I build REST APIs that are documented and ready to plug into a frontend or mobile app.
Starter covers a working API with up to 10 CRUD endpoints against your data model. Standard adds authentication, an EF Core data layer connected to SQL Server (or your database of choice), and interactive Swagger/OpenAPI documentation so any frontend developer can explore and test every endpoint. Advanced adds role-based authorization, rate limiting, and deployment to your host.
Every API follows REST conventions, includes proper error handling and input validation, and ships with full source code.
This covers building the API itself, not a full frontend (available as an add-on) or migrating an existing legacy API.
Starter covers a working API with up to 10 CRUD endpoints against your data model. Standard adds authentication, an EF Core data layer connected to SQL Server (or your database of choice), and interactive Swagger/OpenAPI documentation so any frontend developer can explore and test every endpoint. Advanced adds role-based authorization, rate limiting, and deployment to your host.
Every API follows REST conventions, includes proper error handling and input validation, and ships with full source code.
This covers building the API itself, not a full frontend (available as an add-on) or migrating an existing legacy API.
Programming Languages
ASP.NET, C#Coding Expertise
Performance OptimizationWhat's included
| Service Tiers |
Starter
$400
|
Standard
$700
|
Advanced
$1,100
|
|---|---|---|---|
| Delivery Time | 5 days | 6 days | 7 days |
Number of Revisions | 1 | 2 | 2 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Vue/Nuxt Frontend Bundle
(+ 5 Days)
+$600
Docker/VPS Deployment Bundle
(+ 2 Days)
+$250
Ongoing Feature Sprint Retainer
+$800Frequently asked questions
About Sahidul
Senior .NET Core Developer | ASP.NET Core, SaaS & ERP | AI Integration
Dhaka, Bangladesh - 7:22 am local time
Over the past decade I've led technical teams and delivered systems for MetLife, Telenor Health, ShareTrip, and Monstar Lab, working across core banking, digital healthcare, and online travel platforms. Alongside that, I independently design, build, and ship complete business software under my own brand, Zero Byte BD - 25+ production ASP.NET Core applications (ERP, POS, hospital & school management, inventory, invoicing) and a Windows utility app, Net Speed Meter, used by over 1 million people. I've also written five published technical books on C#, ASP.NET Core, and SignalR.
What I can do for you:
- Design and build ASP.NET Core / .NET web apps, REST APIs, and admin dashboards from scratch, or take over and stabilize an existing codebase.
- Build multi-tenant SaaS products, ERP/POS systems, and business management platforms with Entity Framework Core, SQL Server/MySQL, and clean, documented architecture.
- Integrate AI (OpenAI/Claude/Azure AI) into existing .NET applications.
- Add real-time features (SignalR), secure authentication/authorization, and third-party API integrations.
- Lead delivery end-to-end - requirements, architecture, sprint planning, and hands-on coding - as a Certified Scrum Master (CSM(R)) and Scrum Product Owner (CSPO(R)).
I write clean, maintainable code, document what I build, and communicate clearly in English throughout the project. Browse my Project Catalog below for fixed-price ASP.NET Core services - from a quick bug fix to a full ERP build - or message me about a custom project. I'm happy to start with a short paid trial task if that helps you evaluate fit.
Steps for completing your project
After purchasing the project, send requirements so Sahidul can start the project.
Delivery time starts when Sahidul receives requirements from you.
Sahidul works on your project following the steps below.
Revisions may occur after the delivery date.
Review requirements & data model
Confirm endpoints, entities, and hosting/auth needs from your requirements.
Build & document the API
Implement endpoints, EF Core data layer, and Swagger documentation per your tier.