We are looking for the ATS platform to migrate to,

A few questions we would like to discuss the features of your ATS:1. Do you have access to API?2. Please provide us with your list of possible integrations, perhaps you might have a Zapier/Integromat or other?
3. How is it possible to search for candidates from the base with two or more keywords, for example, “QA Automation Python”, and what search results we may see?
4. How are candidates assigned to recruiters? Does the owner of the candidate change if another recruiter continues to communicate with the candidate after some time?
5. Do you have partial access to external recruiters and what it is consisted of? 
Also, I would like briefly introduce our company:DNA325 is an IT recruiting full-cycle company, on the market already more than five years. We&#39;re connecting global companies with Eastern European candidates.
In our team, we have about 10 recruiters and about 10 external recruiters, for whom we would like to provide partial access.