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ASP.NET Core Web API Development

Secure and structured REST APIs built with ASP.NET Core for web, mobile, third-party, and enterprise integrations.

ASP.NET Core Web API Development
About the service

Built around real business requirements.

I build RESTful APIs with ASP.NET Core that are designed for clarity, security, scalability, and long-term maintainability. API solutions can include request validation, standardized response models, JWT authentication, role and claim- based authorization, API versioning, exception handling, rate limiting, caching, logging, Swagger/OpenAPI documentation, and efficient database access. I also integrate APIs with web applications, mobile applications, external business services, payment providers, and other third-party systems.

What's included

What this service can include.

Scope depends on the project, but these are the areas this service can cover.

RESTful API Architecture
ASP.NET Core Web API
JWT Authentication Role & Claim-Based Authorization
API Versioning
Swagger / OpenAPI Documentation
Request Validation
Global Exception Handling
Standardized API Responses
Dapper / EF Core Data Access
Rate Limiting & Output Caching
Pagination, Filtering & Sorting
Third-Party API Integration
Secure Configuration & Environment Management
FAQ

Frequently asked questions.

Quick answers about scope, process, technology, and delivery.

Can you build an API for an existing frontend or mobile app?

Yes. I can design and build an ASP.NET Core API around an existing web or mobile application, including authentication, business logic, validation, and database access.

How do you secure an API?

Depending on the project, I use JWT authentication, claims and roles, HTTPS, input validation, secure configuration, rate limiting, authorization policies, and carefully scoped endpoints.

Can you version APIs?

Yes. I can implement URL-segment or other API versioning strategies so new versions can be introduced without breaking existing clients.

Do you provide Swagger documentation?

Yes. I can configure Swagger/OpenAPI to document endpoints, parameters, models, authentication requirements, and response types.

Can the API integrate with third-party services?

Yes. I can integrate external REST services, payment systems, authentication providers, messaging services, and other business APIs.

Have a project in mind?

Let's discuss what you need.

Share the current system, requirements, challenges, and expected outcome. I can help identify the right implementation approach.