ISBN Database Scaling & API Development

I'm in need of a developer with experience in databases and API creation to help scale our ISBN database and construct a functional API. Key API functions: - Searching for ISBNs - Retrieving book details - Adding new ISBN entries We want to create functionality similar to isbndb.com. Thanks eatures such as OAuth2 or API keys would be highly advantageous. Ideal skills and experience: - Database management and scaling - API creation - Knowledge of both relational and NoSQL databases - Experience with implementing various levels of API security