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$
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I will develop an asp net core rest API and backend
Andrii
About this gig
Need help with an ASP.NET Core REST API or backend?
I can build, fix, or improve REST APIs using C#, ASP.NET Core, Entity Framework Core, PostgreSQL, and SQL Server.
I can help with:
REST API development
CRUD endpoints
Entity Framework Core
PostgreSQL and SQL Server
JWT authentication
Role-based authorization
API integrations
Bug fixing and debugging
Database migrations
Swagger/OpenAPI
I can work with both new and existing ASP.NET Core projects.
Please contact me before ordering larger backend systems so we can define the scope and requirements.
Get to know Andrii
Andrii
ASP NET Core React Full Stack Developer
- FromUkraine
- Member sinceSep 2025
Languages
English
Hi! I'm a Full Stack Developer focused on C#/.NET and React/TypeScript. I build web applications, REST APIs, CRM systems, admin dashboards, integrations, and responsive websites. My stack includes ASP.NET Core, EF Core, PostgreSQL, SQL Server, React, TypeScript, JavaScript, Docker, and Git. I can help build new applications, integrate APIs, fix bugs, and improve existing projects. Feel free to message me to discuss your project.
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Other Software Development Services I Offer
FAQ
Can you fix an existing ASP.NET Core API?
Yes. I can debug errors, fix endpoints, database issues, authentication problems, and improve existing API functionality.
Can you build an API from scratch?
Yes. I can create an ASP.NET Core Web API with database integration, authentication, validation, and Swagger documentation.
Which databases do you work with?
I work with PostgreSQL and Microsoft SQL Server using Entity Framework Core.
Can you integrate third party APIs?
Yes. I can integrate REST APIs and external services into an ASP.NET Core application.
