Role-Based Access Control System
A comprehensive authentication and authorization system providing secure, role-based access to a large-scale real estate management platform.
Context
A centralized user management and security system designed to ensure that every user has access only to the data and functionality required for their role within the real estate platform.
My Role
- Designed and implemented the authentication and authorization architecture
- Developed role-based permission management
- Implemented multi-layer security checks across the entire application
System Overview
- Office-based property ownership ensuring users only access their own properties
- Role-based permission system with customizable office users
- Separate Viewer role with read-only access to all properties
- Dedicated Translator role with access only to translatable property fields
- Administrator role with unrestricted system access
- Passwords stored using one-way hashing with individual salts
- Temporary password generation for secure password recovery
- Multi-step authentication with session expiration
- Permission validation performed before page rendering, controller execution, and every modifying API request
Challenges & Solutions
Granular permission management
Problem: Different user groups required different levels of access to both properties and individual data fields.
Solution: Implemented a flexible role-based access control (RBAC) system supporting office-specific ownership, read-only users, translators, and administrators.
Securing sensitive user credentials
Problem: User passwords needed to remain protected even in the event of database exposure.
Solution: Stored passwords using one-way hashing combined with unique salts, making password recovery impossible and enforcing secure temporary password resets instead.
Preventing unauthorized access
Problem: Client-side restrictions alone were insufficient to protect sensitive operations.
Solution: Added permission validation at multiple layers, including page rendering, controller execution, and every API endpoint capable of modifying data.
Result: Ensured that unauthorized operations are blocked regardless of how requests are initiated.
Impact
- Protected sensitive business data through multi-layer authorization
- Provided secure collaboration between offices with isolated property ownership
- Reduced security risks through strong password handling and session management
- Improved maintainability by centralizing permission logic across the application
- Enabled specialized workflows through dedicated user roles such as translators and viewers