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$
USD
I will build scalable asp net core web API and backend systems
Md Arif A.
About this gig
Need a secure and scalable ASP.NET Core Web API for your web app, mobile app, SaaS, ERP, or business system?
I am a Senior .NET Developer with 13+ years of experience building enterprise ERP, FinTech, accounting, inventory, and backend systems.
I can build:
ASP.NET Core REST APIs
C# and EF Core backend solutions
SQL Server and PostgreSQL integration
JWT authentication and authorization
Role-based access control
Clean Architecture and CQRS
Third-party API integrations
Validation and error handling
Swagger and OpenAPI documentation
Performance-focused backend solutions
Why work with me?
13+ years of professional .NET experience
Real enterprise software experience
Clean and maintainable code
Secure and scalable architecture
Clear communication and reliable delivery
Package scope is based on the number of API endpoints. One endpoint means one API route or action, such as GET, POST, PUT, or DELETE.
Please message me before ordering so I can review your requirements, API scope, database needs, authentication, and integrations.
Get to know Md Arif A.
Md Arif A.
Senior Dot NET Backend Developer for API ERP and SaaS
- FromBangladesh
- Member sinceNov 2017
Languages
English
Senior .NET and Full-Stack Developer with 17+ years of experience building ERP, POS, inventory, accounting, FinTech, SaaS, and scalable backend systems.
I specialize in ASP.NET Core, C#, Web API, EF Core, SQL Server, PostgreSQL, Clean Architecture, CQRS, Redis, Docker, Angular, and React.
I can help with API development, bug fixing, performance optimization, database design, system modernization, and custom business software.
I deliver clean, secure, maintainable solutions with strong business logic.
My Portfolio
Other Software Development Services I Offer
FAQ
What counts as one API endpoint?
One endpoint means one API route or action, such as GET /products, POST /products, PUT /products/{id}, or DELETE /products/{id}. Each route counts as one endpoint.
Which technologies do you use?
I work with ASP.NET Core, C#, Web API, EF Core, SQL Server, PostgreSQL, JWT, Clean Architecture, CQRS, Redis, Docker, and related .NET technologies.
Does the Standard package include authentication?
Yes. The Standard package includes JWT authentication and authorization. Please contact me first if you need complex identity providers, OAuth, SSO, or advanced permission systems.
What does one third party integration mean?
It means integration with one external API or service. Complex integrations may require a custom offer after I review the documentation and requirements.
Can you work on an existing backend project?
Yes. I can add new API features to an existing ASP.NET Core project after reviewing the current codebase, architecture, and requirements.
Should I contact you before ordering?
Yes. Please message me before ordering so I can confirm the number of endpoints, database requirements, authentication, integrations, and the correct package.
