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Senior Systems Administrator

Toronto, Canada💼 Full-time🗓 2026-10-02 → 2026-10-07

Core

Senior Systems Administrator providing hands-on infrastructure administration and technical leadership for internal IT and Managed Services clients.

Role type

Senior Systems Administrator

Builds

Enterprise IT infrastructure including on-premises servers, Microsoft 365, Azure, and other cloud platforms

Domain

Enterprise IT / Managed Services

Required skills

Windows Server administration, Linux administration, VMware vSphere, Hyper-V, Active Directory, Entra ID, Group Policy, backup and disaster recovery, SAN/NAS storage, core networking, enterprise monitoring platforms, ITSM platforms, technical documentation, root cause analysis, infrastructure project leadership, security hardening, change management

Preferred skills

PowerShell scripting, Python, Ansible, IBM Cloud, GCP, Veeam, Rubrik, Zerto, Fibre Channel switches

Technologies

Windows Server, Linux, VMware vSphere, Hyper-V, Microsoft 365, Azure, IBM Cloud, GCP, Veeam, ServiceNow, ManageEngine, Checkmk

Responsibilities

Design, deploy, and maintain IT infrastructure including physical and virtual servers, operating systems, and storage platforms; Ensure infrastructure availability, reliability, security, and performance through proactive monitoring and maintenance; Respond to and resolve infrastructure incidents and service requests; Act as primary technical escalation point for complex infrastructure issues; Provide technical leadership, mentorship, and coaching to infrastructure team members; Lead infrastructure projects through planning, implementation, and transition to operations (via careerplan.io/jobs/A9-004-E6-F41-senior-systems-administrator)

Seniority

Senior, hands-on IC