Complete App Backend Development

I'm looking for an experienced developer to finish the back end of my app, which should take around 50 hours.

Key Tasks Include:
- User Authentication
- Database Integration
- API Development (type to be confirmed)

Technical Stack:
- VS Code
- Node.js

Ideal Skills and Experience:
- Proficiency in Node.js
- Strong experience with user authentication and database integration
- API development skills, preferably in REST or GraphQL

Please provide examples of similar work done.