I will expert backend node js, nest js, express js, developer and rest API swagger UI

Yes. I can develop a custom Node.js backend based on your business requirements, application features, database structure, API needs, and expected user flow.

Yes. I have experience with both NestJS and Express.js and can select or work with the framework that best fits your existing project architecture and requirements.

Absolutely. I can create REST API endpoints for web applications, mobile apps, SaaS platforms, dashboards, marketplaces, and other digital products.

Yes. I can integrate Swagger/OpenAPI documentation so your development team can easily understand, test, and integrate the available API endpoints.

Yes. I can implement authentication and access-control functionality such as JWT authentication, protected routes, user roles, permissions, and request validation, depending on your project requirements.

Yes. I can connect your backend with the required database and implement the necessary models, relationships, CRUD operations, queries, and data-handling functionality.

Yes. I can integrate external APIs and services required by your application, including payment systems, communication services, authentication providers, AI APIs, and other third-party platforms.

Yes. I can troubleshoot backend bugs, API errors, performance issues, integration problems, and existing code, then implement appropriate improvements while maintaining the current project structure where possible.

I follow structured development practices with a focus on clean architecture, reusable code, validation, error handling, security, and maintainability. The final approach depends on your application's size and technical requirements.

Yes. If you have an application idea, technical specification, Figma design, existing frontend, API requirements, or feature list, I can help translate those requirements into a structured backend solution.