REST API Replication with UI Design

I need an experienced developer to replicate a REST API. The API will use API Key authentication.

Key requirements:
- Replicate existing REST API functionality (data retrieval, data submission, user authentication)
- Develop a user-friendly UI to interact with the API
- Ensure all API endpoints are functional and secure

Ideal Skills and Experience:
- Proficiency in REST API development
- Strong understanding of API Key authentication
- Experience in UI/UX design
- Knowledge of secure coding practices

Please provide examples of similar work done

Price to be discussed