I will build enterprise apps apis and backend systems in net


About this gig
I will develop secure and scalable APIs using ASP.NET MVC, ASP.NET Core or Web API technologies.
This Gig includes API development and integration with an existing database structure provided by the client.
The service includes:
- REST API development
- Database integration
- Authentication and authorization
- CRUD operations
- Validation and error handling
- Clean and scalable architecture
- Entity Framework or ADO.NET support
- API testing
- Secure coding practices
IMPORTANT:
This Gig DOES NOT include database architecture or database modeling design.
If you require:
- Database structure creation
- Database optimization
- Relationships and normalization
- Performance tuning
- Security architecture for databases
- Advanced infrastructure consulting
those services must be quoted separately as additional professional architecture work.
Security level depends on the selected package:
Basic standard security implementation
Standard enhanced security and validations
Premium advanced security hardening and enterprise protections
Every project is customized according to your business and technical requirements to ensure quality, scalability and maintainability.
Get to know Andres Casas
Senior Software Engineer Software Architect
- FromColombia
- Member sinceMay 2026
- Avg. response time1 hour
Languages
Spanish, English
My Portfolio
Other Software Development Services I Offer
FAQ
What technologies do you use?
I mainly work with ASP.NET MVC, ASP.NET Core, Web API, C#, VB, MySQL, Oracle, PostgreSQL, SQL Server, MongoDB, Entity Framework and ADO.NET.
Does this Gig include database design?
No. This Gig includes API development and integration with an existing database. Database architecture and modeling are quoted separately.
Can you create secure APIs?
Yes. I can implement JWT authentication, validations, role-based access, OWASP protections and advanced API security depending on the package selected.
Do you work with existing systems?
Yes. I can integrate APIs with existing applications, databases and third-party services.
Will I receive the source code?
Yes. Source code delivery depends on the selected package and project requirements.
Can you deploy the API to cloud services?
Yes. I can deploy APIs to Azure, AWS or Docker environments as an additional service.
How long does development take?
Delivery time depends on the complexity, security requirements and number of endpoints requested.
Do you provide API documentation?
Yes. Swagger/OpenAPI documentation can be included or added as an extra service.

