Urgent centos server manager Require

Hi All, We need a experinced linux centos server manager. Task Need to do once in a week. 1. Check the security of the server and update antivurus regularly. 2. We have 6 site there in the server. You need to check once in a week if any script is running repeteadly and exhasting our server memory. And send me the report. 3. Take backup of the scipt from dedicted server to another server once in a week so we will not loose a single data.