Can we connect to Creatio CRM using Dataservice or something else using C# in console application

Hi Team,

My requirement is to run a scheduler job on monthly basis, Which would retrieve all employee and then group by a specific conditions and do some calculations and update them.

To do calculation we need to retrieve the few more objects.

So that we can do this using C# in console application i can run in task scheduler as i am using OnPremise Creatio CRM.