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Added 1 min ago
NA
Technical Systems Analyst, Student Systems
Northern Alberta Institute of Technology
St. Catharines, ON · Main Campus
- Full-time
Added 1 min ago
NA
Systems Analyst, Application Development
Northern Alberta Institute of Technology
St. Catharines, ON · Main Campus
- Full-time
Added 1 min ago
NA
Server, Ernest's Dining Room
Northern Alberta Institute of Technology
St. Catharines, ON · Main Campus
- Part-time
Added 1 min ago
HR
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Ottawa, ON · Hard Rock Hotel & Casino Ottawa
- $18.42 CAD / hour
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Ottawa, ON · Hard Rock Hotel & Casino Ottawa
- $18.32 CAD / hour
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Added 15 mins ago
Technical Generalist Consultant
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Ottawa, ON
- Full-time
At Olive Garden, we believe life is best shared around the table. From every heartfelt server greeting to every basket of our fresh-baked breadsticks, we’re here to bring people together…
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Added 29 mins ago
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Tundra Technical Solutions
Montreal, QC
- $38 to $50 CAD / hour
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Added 29 mins ago
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Under the direction of the Hotel Food & Beverage Manager or Shift Supervisor, the Server is responsible for adhering to all policie
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Little Chief Restaurant Breakfast Server
Grey Eagle Resort & Casino
Calgary, AB
- Full-time
Under the direction of the Hotel Food & Beverage Manager or Shift Supervisor, the Server is responsible for adhering to all policie
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Robert Half

Senior System Administrator

Newmarket, ON, Canada

$115,000 to $135,000 CAD / year · Full-time

Apply About employer

Applications open in a new tab.

Job details

Pay: $115,000 to $135,000 CAD / year
Job type: Full-time
Apply by: Nov 6, 2026
Experience: 5+ years of infrastructure, systems administration, or IT operations experience
Posting language: English
Posted: Oct 7, 2026

Original job description

Robert Half is exclusively partnered with a well-established organization in Newmarket that is looking to hire a Senior Systems Administrator to lead infrastructure, security, and IT operations across the business.

This is a highly visible role that combines hands-on technical leadership with stakeholder engagement, vendor management, and strategic planning. The successful candidate will play a key role in modernizing the environment while helping the organization move further toward a cloud-first future.

What You'll Be Working On

This is not a traditional "keep the lights on" Systems Administrator position. The goal is to bring in someone who can take ownership of infrastructure operations, lead continuous improvement initiatives, and become the go-to infrastructure resource for the business.

Responsibilities include:

Owning day-to-day infrastructure and operational support

Managing and mentoring the Network Administrator

Partnering with the MSP and managing the vendor relationship

Responding to issues affecting internal users and external clients

Identifying opportunities for infrastructure improvements and modernization

Making security recommendations and driving best practices

Supporting disaster recovery, redundancy, and business continuity initiatives

Leading and contributing to infrastructure-related projects

Acting as a trusted technology advisor to leadership and business stakeholders

This role offers significant autonomy and influence, with the objective of allowing the VP, IT to transition away from day-to-day operational IT responsibilities.

Technology Environment

Microsoft environment

Hybrid Active Directory

Azure / Entra ID

Windows Server

Exchange Online & on-prem Exchange

SQL Server

SharePoint

Sophos Firewalls

DNS / DHCP

Virtualization technologies

PowerShell automation

Telephony and voice technologies

Disaster recovery and redundancy solutions

Upcoming Projects

Enhancement of disaster recovery and redundancy capabilities

Continued cloud transformation initiatives

Client portal deployment and supporting infrastructure

Ongoing telephony modernization projects

Security improvements and operational automation

What We're Looking For

5+ years of infrastructure, systems administration, or IT operations experience

Strong Microsoft infrastructure expertise

Experience supporting hybrid cloud environments

Network, security, and systems administration experience

Strong troubleshooting and problem-solving skills

Experience managing vendors or MSP relationships

Excellent communication and stakeholder management abilities

Comfortable working directly with clients and senior leadership

A passion for technology and continuous improvement

Automation mindset with PowerShell or similar scripting experience

Why Consider This Opportunity?

Opportunity to become the senior infrastructure leader within the organization

Broad ownership across infrastructure, security, operations, and vendor management

Executive visibility and influence

Stable organization with a long-tenured technology team

100% employer-paid benefits

RRSP matching up to 6%

Annual salary reviews

Paid certifications and professional development

Free onsite parking

7-hour workday (8:30am - 4:30pm)

Apply About employer

More about this job

Responsibilities

Own infrastructure operations and support, lead and mentor the Network Administrator, manage the MSP relationship, and respond to issues affecting users and clients. Drive infrastructure modernization, security, disaster recovery, continuity, and related projects while advising leadership and business stakeholders.

Requirements

Requires at least five years of infrastructure, systems administration, or IT operations experience, strong Microsoft infrastructure expertise, and experience with hybrid cloud, networking, security, and systems administration. Candidates should also bring troubleshooting ability, vendor or MSP management experience, strong communication skills, and scripting or automation experience such as PowerShell.

Skills

Microsoft Infrastructure
Hybrid Cloud Environments
Systems Administration
IT Operations
Network Administration
Cybersecurity
Azure And Entra ID
Active Directory
Windows Server
Exchange Online
SQL Server
SharePoint
PowerShell Automation
Disaster Recovery
Vendor Management
Stakeholder Management

Benefits

Employer-Paid Benefits
RRSP Matching Up To 6%
Annual Salary Reviews
Paid Certifications And Professional Development
Free Onsite Parking
7-Hour Workday

Visa sponsorship

Not detected in the job text

Keywords

Microsoft Environment
Hybrid Active Directory
Azure
Entra ID
Windows Server
Exchange Online
On-Premises Exchange
SQL Server
SharePoint
Sophos Firewalls
DNS
DHCP
Virtualization
PowerShell
Telephony
Voice Technologies
Disaster Recovery
Redundancy
Business Continuity
Cloud Transformation
Infrastructure Modernization
Security Best Practices
Managed Service Provider
Vendor Management
Client Portal
Operational Automation

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