NoSQL Database

I am looking for a freelancer to help me set up a NoSQL Database system to store user data. I do not have any particular NoSQL Database system in mind, so I'm open to suggestions from the freelancer. The expected data size and growth rate is not available at this time. The NoSQL Database system will allow efficient storage and retrieval of EMG (electromyographic signal) data, including raw, filtered, and feature data, as well as associated user information. The successful freelancer will be able to successfully create a database system for the data that can be used without unexpected difficulties or issues. Please let me know if you have any questions. Thanks!