Senior IT Systems Administrator
Confirmed on the employer's own hiring board on Nov 12, 2026. First seen by Alion on Sep 15, 2026. Acquird.io scores A on the Alion truth index.
Senior IT Systems Administrator
Role: Full-time, on-site (5 days/week)
Location: Etobicoke, Ontario (Toronto)
Comp: $90,000-$110,000 base + bonus + benefits
About Us
A profitable, privately owned, growing B2B company in the industrial space. Proudly Canadian and entrepreneurial, serving business customers across North America.
With under 100 employees and a small, hands-on IT function, we're scaling while keeping a practical, no-politics, get-it-done culture.
How We Work
Technology should make the business run better, not just keep the lights on.
This role reports to the IT Director. It's a lead-level role with no direct reports, with occasional travel between our Ontario sites.
Here's how your time will generally split (actual time will vary weekly):
Business Applications & ERP Support (about 40%): Tier 2/3 support for our ERP and CRM, maintaining an internal quote-generation system that pulls from ERP data. Planning upgrades/testing. Key tech: Epicor Prophet 21, Salesforce, SQL, Fivetran / Azure Data Factory
Infrastructure and Networking (25%): Ensuring that switches, wireless, VPN, servers, and backups are healthy across our sites. Key tech: Ubiquiti UniFi, virtualization, backup platforms
Microsoft 365 and Cloud (20%): Running the tenant, access and compliance policies, user onboarding/offboarding and device management, plus SaaS licences and renewals. Key tech: Microsoft 365 (Exchange Online, Teams, SharePoint, Intune, Entra ID), Azure
Security and Voice (15%): Triaging security alerts, tuning policies against Secure Score, and running the phone system end to end. Key tech: Microsoft Defender, Teams Phone (Direct Routing, call queues, E911)
Note: We're planning to onboard an external MSP this year for first-response support and after-hours monitoring; you'll be the internal technical lead and escalation point.
IT projects are a key part of the role: leading upgrades end to end, guiding software and vendor decisions, and helping the business adopt AI tools safely.
About You
You're a Senior IT Generalist with deep roots in systems administration, equally comfortable in an ERP workflow, a network dashboard, and a Microsoft 365 tenant.
You take ownership of outcomes rather than waiting for direction. You document what you build, explain trade-offs in plain language, and the business trusts your judgment on technology.
You Bring:
Strong experience administering Microsoft 365 (Exchange Online, Teams, SharePoint, Intune, Entra ID), including Conditional Access, DLP, and sensitivity labels
Hands-on ERP administration: users, roles, module setup, master data, upgrades, and UAT (Epicor Prophet 21 or similar tools like SAP, NetSuite, MS Dynamics)
Experience managing networks end to end (VLANs, switching, wireless, routing, VPN, DNS/DHCP), plus servers, virtualization, and tested backup and recovery
Security operations experience: triaging Defender alerts, tuning identity and endpoint policies against Secure Score, and supporting audits
Experience administering Microsoft Teams Phone (Direct Routing/SBC, call queues, auto attendants, E911)
Experience managing IT Systems for an office of 50+ staff
Track record leading IT projects and system upgrades from planning through rollout
Experience managing vendors and an MSP relationship: escalations, SLAs, SaaS licences and renewals, and software purchase recommendations
Practical experience rolling out or governing AI tools (such as Microsoft Copilot) with the right data and access controls
Qualifications:
8+ years in IT systems administration or infrastructure roles (Senior level)
Post-secondary diploma or degree in IT, Computer Science, or a related field, or equivalent hands-on experience
Scripting and automation experience (PowerShell, Microsoft Graph)
Comfort writing SQL queries against business databases
Strong documentation habits: runbooks, integration maps, change logs, and diagrams
Bonus Points:
Experience using AI and automation to take repetitive IT work off the plate, such as user provisioning, ticket triage, and system monitoring and alerts
Salesforce administration experience
Experience with Ubiquiti UniFi networking
Azure governance and cost management, or pipeline tooling (Fivetran, Azure Data Factory)
Experience in distribution, manufacturing, or multi-site operations
Certifications such as MS-102, AZ-104, CCNA, or Security+
Perks:
This role includes Health and Dental benefits + an Annual Bonus Plan
Equal opportunity employer. This posting is for an existing vacancy. AI-assisted tools support our sourcing and application review; every hiring decision is made by a person. Interviewed candidates will hear back within 45 days.