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Senior System Administrator

Leaders Recruiting • Markham, Ontario, Canada • Posted March 16, 2026

Location Markham, Ontario
Job Type Full-time
Category Computer Occupations
Posted March 16, 2026

Location:

Markham

The System Administrator is responsible for the maintenance, configuration, and reliable operation of the organization’s computer systems and servers. You will install hardware and software and participate in research and development to continuously improve and keep up with the IT business needs of the organization.

Responsibilities:

  • Manage daily, weekly, monthly & quarterly administration tasks

  • Active directory management & optimization

  • Group policy configuration & deployment

  • Server build & configuration; Advanced server admin knowledge

  • Patch management – endpoint patching/critical updates

  • Office – advanced knowledge of O Administration

  • Formulate policy & process re technical administration

  • Application support

  • Project execution

  • Implementation – upgrades, migrations etc.

  • Manage back-ups – daily back-up logging, m...

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