I will develop a secure rest API with dotnet or python fastapi

Need a reliable backend for your app, your data or your integrations? I design and build secure REST APIs with ASP.NET Core (C#) or Python FastAPI, connected to SQL Server or MySQL and documented with OpenAPI/Swagger so your team can use them from day one.

What you get:

• Clean, versioned REST endpoints with validation and error handling
• - Authentication and role-based access
• - SQL database design and integration
• - Third-party integrations (webhooks, Meta Graph API, CRM and payment APIs)
• - Automated tests, Docker packaging and a short deployment guide

My background: I build internal systems professionally, including a .NET 8 + Angular payments platform with 48 unit tests and a FastAPI service that receives Meta Ads webhooks and delivers leads to SQL Server and a CRM. You can see them in my portfolio.

Send me a message with what you need to connect or expose and I will reply with questions and a clear proposal.

EN ESPAÑOL: APIs REST seguras con ASP.NET Core o FastAPI, con SQL, autenticación, documentación OpenAPI y Docker. Escríbeme en español o inglés y te preparo una propuesta.