I will build secure asp net core rest apis for web and mobile apps


About this gig
Need a secure, scalable, and well-documented REST API for your web or mobile application?
I specialize in developing production-ready ASP.NET Core REST APIs using modern architecture and best practices. Whether you're building a new application, integrating third-party services, or extending an existing system, I can deliver clean, maintainable, and high performance backend solutions.
Services I offer:
- Custom ASP.NET Core REST API Development
- CRUD API Endpoints
- JWT Authentication & Authorization
- Database Integration (SQL Server & PostgreSQL)
- Entity Framework Core & Dapper
- Swagger / OpenAPI Documentation
- Third-Party API Integration
- Payment Gateway Integration
- API Performance Optimization
- Bug Fixing & Feature Development
- Clean Architecture & Best Practices
Why choose me?
- 12+ years of enterprise software development experience
- Clean, secure, and maintainable code
- Fast communication and regular updates
- Complete source code included
- Thorough testing before delivery
- Long-term support available
Please contact me before placing an order so we can discuss your requirements and select the most suitable package.
Get to know Fossyl Labs
AI and Full Stack Software Development Company
- FromSri Lanka
- Member sinceJun 2026
- Avg. response time1 hour
Languages
English
My Portfolio
Other Software Development Services I Offer
FAQ
Can you develop APIs for existing applications?
Yes. I can build new REST APIs or extend your existing ASP.NET Core application with new endpoints, business logic, and database integration.
Which databases do you support?
I work with SQL Server, PostgreSQL, MySQL, and SQLite using Entity Framework Core, Dapper, or ADO.NET depending on your project requirements.
Do you provide Swagger/OpenAPI documentation?
Yes. I can generate complete Swagger/OpenAPI documentation so your frontend or mobile developers can easily integrate with the API.
Can you integrate third-party APIs?
Yes. I can integrate payment gateways, Google APIs, Microsoft services, Firebase, Twilio, SendGrid, shipping APIs, and many other REST APIs.
Can you secure my API?
Yes. I can implement JWT authentication, role-based authorization, OAuth 2.0 integrations, request validation, and other API security best practices.
Do you deploy the API?
Yes. I can deploy your ASP.NET Core API to IIS, Linux servers, VPS environments, Docker containers, or cloud platforms based on your requirements.
