All Services Administrative & Secretarial IT system administrator $5/hr · Starting at $25 A system administrator, or sysadmin, is a person who is responsible for the upkeep, configuration, and reliable operation of computer systems; especially multi-user computers, such as servers. About $5/hr · Ongoing Download Resume A system administrator, or sysadmin, is a person who is responsible for the upkeep, configuration, and reliable operation of computer systems; especially multi-user computers, such as servers. 0 Reviews This Freelancer has not received any feedback.