I will develop secure authentication and authorization for backend


About this gig
Need secure authentication and authorization for your backend application?
I will develop or improve a secure authentication and authorization system for your web, mobile, or backend application.
My services include:
- User registration and login
- JWT access and refresh tokens
- Password hashing and secure credential handling
- Authentication and authorization
- Role-Based Access Control (RBAC)
- Roles and permissions
- Protected API endpoints
- Email verification and password reset
- OAuth2 and social login integration
- Session and token management
- Authentication debugging and security improvements
Backend technologies:
Python / FastAPI
JavaScript / Express.js
TypeScript / NestJS
PHP / Laravel
Java / Spring Boot
I can build an authentication system from scratch or integrate authentication into your existing backend.
I focus on clean architecture, secure implementation, proper validation, maintainable code, and reliable access control.
Please contact me before ordering so I can review your existing backend, authentication requirements, user roles, database, and desired security flow.
Get to know Farhod Ghiyosov
Backend Developer
- FromTajikistan
- Member sinceJan 2023
- Avg. response time1 hour
Languages
English, Russian, Tajik
Other Software Development Services I Offer
FAQ
Can you add authentication to my existing backend?
Yes. I can integrate authentication and authorization into an existing backend. Please provide information about your current technology stack, database, user model, and existing authentication flow.
Can you implement JWT access and refresh tokens?
Yes. I can implement JWT-based authentication with access and refresh tokens, token validation, protected endpoints, expiration handling, and secure refresh flows.
Can you implement roles and permissions?
Yes. I can implement Role-Based Access Control (RBAC) with roles and permissions to control which users can access specific API endpoints and application resources.
Can you add Google or other OAuth login?
Yes. I can integrate supported OAuth providers such as Google, GitHub, or other services when the required provider documentation and credentials are available.
Can you fix or improve an existing authentication system?
Yes. I can review and improve existing authentication flows, including login issues, JWT handling, authorization logic, roles, permissions, token management, and related backend security problems.

