Senior It Systems Administrator

Description:

Adecco Canada is recruiting on behalf of one of our clients for a hands-on Senior IT Systems Administrator (Site Lead) to join their growing team in Toronto, Ontario.

This is an excellent opportunity for an experienced IT professional who enjoys combining systems administration, automation, cybersecurity, networking, and onsite technical leadership. The successful candidate will play a key role in maintaining secure, reliable IT infrastructure while supporting end users and driving automation initiatives that improve operational efficiency.

Key Responsibilities

As the Senior IT Systems Administrator (Site Lead), you will:

• Lead onsite IT operations, serving as the primary technical contact for the Toronto office.

• Design, implement, and maintain automated employee onboarding and offboarding processes across identity and collaboration platforms, including Okta, Google Workspace, and Slack.

• Support and maintain conference room technology, audiovisual systems, office hardware, and workplace technology to ensure reliable day-to-day operations.

• Collaborate with Workplace, HR, Information Security, and other internal teams on office expansions, workstation deployments, technology upgrades, and infrastructure projects.

• Administer and secure enterprise network infrastructure, including Wi-Fi, LAN, VPN, firewalls, DNS, DHCP, and VLAN environments.

• Manage endpoint devices using Microsoft Intune or comparable Mobile Device Management (MDM) platforms.

• Develop automation solutions using Python, PowerShell, Bash, REST APIs, or similar technologies to streamline IT operations and reduce manual processes.

• Monitor, troubleshoot, and resolve hardware, software, networking, and systems issues for Windows and macOS environments.

• Maintain accurate technical documentation, standard operating procedures (SOPs), and system runbooks.

• Provide Tier 2/3 technical support through the organization's IT service management platform while identifying opportunities for continuous improvement.

• Partner with Information Security teams to support compliance initiatives, endpoint protection, and security monitoring.

Qualifications

To be successful in this role, you should have:

• Minimum 5 years of experience in Systems Administration, Infrastructure Administration, or a similar IT role.

• Hands-on experience supporting macOS and Windows operating systems. Note this is primarily MAC focused so expertise in this area is required.