Firebase & Node.js Expert for Backend Migration

I am looking for a talented backend developer with extensive experience in Firebase and Node.js to help migrate my existing backend to a serverless architecture.

Key Responsibilities:
- Migrate the current backend, which includes user authentication, data storage, and real-time updates.
- Enhance the scalability of the app throughout the migration process.

Ideal Skills:
- Proficiency in Firebase and Node.js.
- Proven experience with serverless architecture.
- Strong understanding of scalability principles.
- Background in developing user authentication, data storage, and real-time update systems.

Please provide examples of your previous work that align with these requirements.