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Added 1 hour ago
IG
System Admin
Inland Group of Companies
Truro, NS · ITH Truro
- Full-time
Position Overview: Reporting to the Director of Information Technology, the Systems Administrator II is responsible for supporting, monitoring, maintaining, and improving the company’s…
Added 2 hours ago
I
Senior Systems Engineer
illumin
Toronto, ON · Greater Toronto Area, Canada
- $100,000 to $150,000 CAD / year
- Full-time
We are hiring a Senior Systems Engineer to join our Infrastructure & Operations team. This is a senior, hands-on infrastructure role focused on Linux systems, virtualization, physical and…
Added 2 hours ago
TC
Oracle Database Administrator
Tata Consultancy Services
Toronto, ON
- $100,000 to $120,000 CAD / year
- Full-time
…clients to transform themselves across the full AI stack, from infrastructure to…
Added 2 hours ago
O
Sr. Engineer System administrator
OnX
Toronto, ON
- Full-time
We are seeking a highly skilled Senior Systems Administrator to join our Infrastructure Services team. This role is ideal for a hands-on technical professional who thrives in complex…
Added 3 hours ago
FE
Intern System Administrator
Future Electronics
Kirkland, QC
- Internship
We are looking for an Intern Systems Administrator to join our IT team. In this role, you will support the day-to-day operations and continuous improvement of our Microsoft technology…
Added 3 hours ago
I
Senior System Administrator
ICES
Toronto, ON
- Contract
ICES is seeking a Senior System Administrator to join our Technology department. The Senior System Administrator is responsible for building, maintaining, and supporting Information…
Added 3 hours ago
MF
Cloud Platform Engineer
MTY Food Group
Montreal, QC
- Full-time
Reporting Structure: Reports to Sr Director, IT Infrastructure
Added 3 hours ago
TC
Unix Administrator
Tata Consultancy Services
Toronto, ON
- $90,000 to $100,000 CAD / year
- Full-time
…clients to transform themselves across the full AI stack, from infrastructure to…
Added 3 hours ago
IC
Senior System Administrator
ICES Central
Toronto, ON
- Full-time
- Temporary
ICES is seeking a Senior System Administrator to join our Technology department. The Senior System Administrator is responsible for building, maintaining, and supporting Information…
Added 8 hours ago
S
IT Technology Services Senior Specialist - Linux Administration, Hyperscaler, Pacemaker Operations
SAP
Toronto, ON
- Full-time
…of cloud deployment options for our customers with our own infrastructure, our partners and through public cloud…
Added 8 hours ago
R&
End User Systems Support Specialist
Robertson & Company Ltd.
Toronto, ON
- Full-time
The End User Systems Support Specialist plays a key role in ensuring smooth daily operations of the organization’s IT infrastructure and end user technology. This position supports both…
Added 14 hours ago
MT
Senior Infrastructure Engineer (Linux & Cloud Automation)
Manx Telecom Enterprise
Permanent North American Gaeltacht, ON
- Full-time
Job Details: Senior Infrastructure Engineer (Linux & Cloud Automation)
Added 16 hours ago
G
Junior Systems Administrator
GraceMed
Oakville, ON
- $50,000 to $60,000 CAD / year
- Full-time
Transform Technology: Join GraceMed as an Junior System Administrator in Oakville!
Added 19 hours ago
CI
Cybersecurity Administrator- Vancouver
Compugen Inc
Vancouver, BC
- Full-time
Position Overview: We are seeking a Cybersecurity Administrator/Infrastructure & Security Operations resource to strengthen our cybersecurity capabilities for a 6 month contract (strong…
Added 19 hours ago
KG
Senior Technology Architect
K&K Global Talent Solutions INC.
Toronto, ON
- Full-time
Client is seeking for skilled Oracle Fusion Cloud OCI & Security Administrator to manage, support, and secure Oracle Cloud Infrastructure (OCI) and Oracle Fusion Cloud environments. The…
Added 19 hours ago
E
Office Administrator
EllisDon
Toronto, ON · ON · Ontario Projects
- Full-time
EllisDon Facilities Services (EDFS) specializes in infrastructure and asset maintenance, operations, and management. We optimize an asset’s efficiency, in order to maximize lifecycle and…
Added 19 hours ago
E
Health, Safety & Environment Administrator
EllisDon
Edmonton, AB · Fort Saskatchewan, AB
- Full-time
…including earthworks, underground utilities, pipelines, and infrastructure…
Added 20 hours ago
SS
Azure Infrastructure Engineer
Sonata Software North America Inc.
Toronto, ON
- Full-time
Azure Security Engineer Associate; Azure Administrator Associate) Candidates must be able to work independently.
Added 20 hours ago
I
Senior Systems Engineer
illumin
Toronto, ON · Greater Toronto Area, Canada
- Full-time
We are hiring a Senior Systems Engineer to join our Infrastructure & Operations team. This is a senior, hands-on infrastructure role focused on Linux systems, virtualization, physical and…
Added 20 hours ago
Bilingual Senior Specialist, Cloud Infrastructure Operations Engineering
CMHC - SCHL
Ottawa, ON · Toronto, ON · Montreal, QC
Join the Technology and Business Transformation team in the Bilingual Senior Specialist, Cloud Infrastructure Operations Engineering position. In this position, you will be responsible for…
Added 21 hours ago
RC
Desktop Administrator II, IT Infrastructure
Ryan Companies US, Inc.
Calgary, AB
- Full-time
The Desktop Administrator II (“Desktop Administrator”) maintains and manages distributed desktop and laptop systems and software, including, but not limited to, installation, configuration,…
Added 21 hours ago
D
Senior DevOps Engineer - Healix
Deloitte
Toronto, ON
- Full-time
We are hiring a Senior DevOps Engineer to own and evolve our cloud platform on AWS, grounded in infrastructure as code, secure multi-account patterns, and reliable delivery. You will shape…
Added 22 hours ago
CC
System Administrator
Confidential Careers
Canada
- Contract
premier global organization - is seeking a highly skilled technical lead to shape and evolve their enterprise infrastructure. In this cross-functional role, you will be the driving force…
Added 22 hours ago
PS
Network Administrator
PlanIT Search
Markham, ON
- $95,000 to $115,000 CAD / year
- Full-time
As a Network Administrator (Global) you are responsible for Provide technical expertise in IT infrastructure and network platforms for global operations. Design and implement infrastructure…
Added 23 hours ago
M
Lead Contracts Administrator
Metrolinx
Canada
- Full-time
…professionals who care deeply about working together to deliver infrastructure and make a positive impact in our communities. Join us as we build a knowledgeable and collaborative team that…

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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