Position: Senior Windows System Administrator

Location: Etobicoke

Compensation: $115K-$125K

Job Type: Permanent

Posting Type: Open vacancy

Hybrid Requirement: 3 days in Etobicoke

Role Overview We are seeking a Senior Systems Administrator to manage, maintain, and enhance enterprise Windows and Linux server infrastructure. This role will focus on server administration, patching, automation, vulnerability remediation, troubleshooting, cloud infrastructure, and high-availability environments across physical and virtual platforms.

Responsibilities:

- Manage and maintain Windows and Linux server environments, including server builds, configuration, upgrades, decommissioning, clustering, and ongoing production support.
- Own enterprise patching and vulnerability remediation, using tools such as SCCM, Ansible, and vulnerability management platforms to ensure servers remain secure, compliant, and up to date.
- Troubleshoot complex infrastructure issues across operating systems, virtualization, storage, networking, applications, and cloud environments, performing root-cause analysis and implementing sustainable solutions.
- Automate infrastructure operations using Ansible, PowerShell, Bash, or similar scripting and configuration-management technologies to reduce manual effort and improve operational efficiency.
- Support cloud and virtualization environments, including Azure, AWS, VMware,



disaster recovery, high availability, and server migrations, while maintaining robust documentation, change management, and ITIL practices.

Qualifications:

- 8+ years of hands-on systems administration experience, with strong expertise supporting enterprise Windows Server and/or Linux/RHEL environments.
- Strong experience with server patching, hardening, vulnerability remediation, SCCM, Ansible, and infrastructure automation.
- Advanced troubleshooting skills with experience resolving complex production incidents, performing root-cause analysis, and supporting high-availability and clustered environments.
- Hands-on experience with VMware and cloud platforms such as Azure or AWS, including server provisioning, migration, maintenance, and decommissioning.
- Strong knowledge of Active Directory, DNS, DHCP, PowerShell/Bash, networking, cybersecurity, change management, and disaster recovery, with excellent documentation and communication skills.

Interested? Please send your resume in Word format to Neeta Bernard at [email protected] . REFER A NEW HIRE AND EARN A CASH BONUS! For details, click here. All applications are reviewed by our recruitment team, and hiring decisions are made by people. We may also use AI-enabled tools to support parts of the application review process.

📌 Senior Systems Administrator (Etobicoke)
🏢 Quantum Technology Recruiting Inc. (QTR)
📍 Etobicoke