Senior IT Systems Administrator

Job summary

The Senior IT Systems Administrator will manage business applications, ERP support, and infrastructure across multiple sites. They will serve as the internal technical lead for IT projects, vendor relationships, and security policy implementation.

Job details

Senior IT Systems Administrator Role: Full-time, on-site (5 days/week) Location: Etobicoke, Ontario (Airport area) Comp: $90,000-$120,000 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) 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) 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, and interviewed candidates will hear back within 45 days.

What you’ll do

The Senior IT Systems Administrator will manage business applications, ERP support, and infrastructure across multiple sites. They will serve as the internal technical lead for IT projects, vendor relationships, and security policy implementation.

Requirements

Candidates must have 8+ years of experience in IT systems administration with deep expertise in Microsoft 365, ERP systems, and network management. A post-secondary diploma or degree in IT or a related field is required, along with strong documentation and project leadership skills.

Benefits

• Health benefits • Dental benefits • Annual bonus plan

Listed skills

• Technical Documentation · Preferred
• SQL · Preferred
• systems administration · Preferred
• Microsoft 365 · Preferred
• Project management · Preferred

Other relevant skills

Identified from the job description. Confirm important requirements above.

• Microsoft 365
• ERP administration
• Network administration
• Systems administration
• Microsoft Teams Phone
• SQL
• PowerShell
• Microsoft Graph
• Project management
• Vendor management
• Security operations
• Virtualization
• Backup and recovery
• Cloud infrastructure
• AI tool governance
• Technical documentation
• Epicor Prophet 21 (Distribution Software)
• Microsoft Copilot
• Azure Security
• Azure Data Factory
• Workflow Management
• Office 365 Exchange Online
• Ubiquiti Unifi
• Microsoft Teams
• Planning
• Microsoft Access
• Acceptance Testing
• Artificial Intelligence
• Auditing
• Automation
• Microsoft Azure
• Business To Business
• Backup Devices
• Cost Management
• Customer Relationship Management
• Dashboard
• Cisco Certified Network Associate
• Software As A Service (SaaS)
• Computer Science
• CompTIA Security+
• Dynamic Host Configuration Protocol (DHCP)
• System Administration
• Device Management
• Enterprise Resource Planning
• Governance
• Virtual Private Networks (VPN)
• Windows Defender
• Operations
• Windows PowerShell
• Salesforce

Job areas

• Technology
• Engineering
• Security & Safety
• Administrative
• IT Systems Administrator
• IT Administrator
• Systems Aministrators
• Network and Computer Systems Administrators