Hi there :) 
We are a start-up focusing on providing recruitment services (recruitment-as-a-service, and headhunting). We are looking for a tool which will help us to track applicants and manage relationship with clients (e.g. see what kind of positions we are working on with each clients, where we stand in the process, and who are the candidates in the process). Plus, we would like to have a feature which will allows us to do marketing campaigns and track performance of such campaigns (for talents pool and for clients). 
And all these should be GDPR complaints :) 

Looking forward to our call!