We are looking for an experienced developer with strong expertise in Supabase authentication and Allegro API integration.

The main goal is to build or improve an authentication system using Supabase and connect our platform with Allegro API for marketplace-related functionality.

Responsibilities:

• Set up and configure Supabase authentication
• Implement secure login, signup, password reset, and session handling
• Manage user roles and access control if needed
• Integrate Allegro API with our existing application
• Handle OAuth/API authentication for Allegro
• Fetch, sync, and manage Allegro marketplace data
• Ensure secure API communication and proper error handling
• Test the full authentication and API integration flow

Required experience:

• Strong hands-on experience with Supabase Auth
• Experience with Allegro API integration
• Knowledge of OAuth, REST APIs, access tokens, and refresh tokens
• Experience with JavaScript/TypeScript, React/Next.js, or similar frameworks
• Ability to write clean, maintainable, and secure code
• Good understanding of database structure and API workflows

Please apply only if you have previous experience with Supabase authentication and Allegro API. In your proposal, briefly describe your relevant experience and how you would approach this integration.

Important: reply with resume and your some of example with similar project.

note: Integrating the Allegro API is essential for this project; therefore, please do not submit a response unless you have extensive relevant experience.