Senior Systems Administrator Jobs in Mississauga, ON (290)

There are 290 Senior Systems Administrator opportunities available in Mississauga, ON all with unique requirements.

A Senior Systems Administrator ensures that an organization's IT infrastructure is working at peak performance and availability. He or she is responsible for planning, managing, and evaluating the systems within the Information Technology (IT) department. The Senior Systems Administrator keeps abreast of current technology and implements updates to business services as necessary. A large part of this position often involves supervising junior administrators and resolving issues relating to network operations.

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