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I will build rest apis with asp net core and sql server
Bastian Matias
About this gig
Need a secure and reliable REST API for your web or business application?
I can build, extend, or improve ASP.NET Core REST APIs using clean backend development practices, SQL Server, Entity Framework Core, JWT authentication, and Swagger/OpenAPI documentation.
I can help with:
- REST API endpoints
- CRUD operations
- ASP.NET Core backend services
- SQL Server database integration
- Entity Framework Core configuration
- JWT authentication and authorization
- Business logic and validations
- Error handling and logging
- Swagger/OpenAPI documentation
- Existing API improvements and bug fixes
Technologies:
- ASP.NET Core
- C#
- Entity Framework Core
- SQL Server
- JWT Authentication
- REST APIs
- Swagger / OpenAPI
This gig is ideal if you need a backend API for a web application, admin panel, dashboard, mobile app, internal system, or Angular frontend.
Before placing an order, please contact me first so I can review your requirements, confirm the scope, and recommend the best package or custom offer for your project.
Get to know Bastian Matias
Bastian Matias
Semi Senior NET Fullstack Developer
- FromChile
- Member sinceJun 2026
- Avg. response time1 hour
Languages
English, Spanish
I am a Semi Senior .NET Fullstack Developer with over 3 years of experience in banking, pension funds, and ERP sectors. I specialize in building and maintaining enterprise web modules using ASP.NET MVC/Core, SQL Server, and Angular. I focus on delivering maintainable solutions, ensuring operational continuity, and providing functional value to the business through modern development practices.
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FAQ
Do you provide JWT authentication?
Yes. I can implement JWT authentication and role-based authorization.
Do you work with SQL Server databases?
Yes. I can design, integrate, and optimize SQL Server databases using Entity Framework Core.
Will I receive the source code?
Yes. All packages include source code delivery.
Do you provide Swagger documentation?
Yes. API documentation can be included depending on the selected package.
Can you work on an existing API project?
Yes. I can extend, improve, and maintain existing ASP.NET Core APIs.
Can you integrate the API with my frontend?
Yes. I can integrate the API with your existing frontend, including Angular apps or other web clients. The final scope depends on endpoints, authentication, forms, validations, and error handling. Please contact me first.
