Are you the person other IT professionals turn to when they can't solve the problem?

We're looking for an experienced Senior Systems Engineer to join a growing technology team supporting complex client environments.

We're hiring across two areas:

Projects & Solutions - designing, implementing and migrating infrastructure solutions.

Tier 3 Infrastructure & Escalations - solving complex technical issues and acting as the senior escalation point for critical client environments.

If you're strongest in one area but experienced across both, we'd like to hear from you.

What You'll Do

Design, implement and support Microsoft and hybrid infrastructure environments

Lead infrastructure projects from design through implementation and handover

Provide Tier 3 troubleshooting and escalation support

Deploy and support VMware and Hyper-V environments

Administer Windows Server, Active Directory, Group Policy and Azure/Entra ID

Support Microsoft 365, Exchange Online and SharePoint

Implement and support RDS/Terminal Services, VPN and remote-access solutions

Work with SAN/NAS, storage, backup and disaster recovery solutions

Troubleshoot LAN/WAN, firewalls, security and connectivity

Review client environments and recommend improvements to performance, security and resiliency

Develop technical documentation and implementation plans

Participate in an after-hours/on-call rotation

Pay:
CA$80,000.00-CA$90,000.00 per year

What We're Looking For

7+ years of progressive systems/infrastructure experience preferred

Strong hands‑on experience with VMware and/or Hyper‑V

Advanced knowledge of Microsoft enterprise technologies

Experience with M365, Exchange, Windows Server and Active Directory

Strong troubleshooting and root‑cause analysis skills

Experience implementing infrastructure solutions and managing technical projects

Knowledge of storage, backup and disaster recovery





Excellent client‑facing communication and documentation skills

Ability to work independently and take ownership of complex technical challenges

Experience with SQL Server, Linux, PowerShell, Cisco Duo, LogicMonitor, NinjaOne, Power BI or Power Automate is considered an asset.

Company Overview: ACCU-STAFF, our mission is to help organizations find the top Industry talent and to help people achieve their personal and skilled goals through the growth of their careers. Our core values are the backbone of our business, which is how we guide our hiring process: we show excellence through results, lead with integrity and accountability, and exemplify competitive greatness.

We are honoured to be ranked among the Top 50 staffing and recruitment firms in Canada, out of nearly 30,000 firms nationwide.

Forbes has recognized us as one of the Best in Canada across all three major categories:

Best Executive Recruitment Firms

Best Temporary Staffing Firms

Best Professional Recruiting Firms

Microsoft, Cisco, VMware, Citrix, Linux or other relevant technical certifications are also valued.

Why Join?

Competitive compensation

Health and dental benefits

Paid time off

Professional development and certification support

Exposure to diverse enterprise technologies and client environments

Opportunity to work on challenging projects and continue expanding your technical expertise

Interested?
If you're a senior infrastructure professional who enjoys building solutions, solving complex problems and being the technical expert others rely on, we'd like to hear from you.

ACCU-STAFF has an accommodation process in place and provides accommodations for employees with disabilities. If you require a specific accommodation because of a disability or a medical need, please contact Human Resources so that arrangements can be made for the appropriate accommodations to be in place before you begin your employment. We thank all applicants for their interest; however only those selected for an interview will be notified

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📌 Senior Systems Engineer - Tier 3 (Ontario)
🏢 Accu-staff Resource Systems Enterprises
📍 Ontario