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Added 1 hour ago
TI
Technology Risk Lead - Cybersecurity
Themesoft Inc.
Toronto, ON
- Contract
Serve as the primary risk advisor for assigned technology development teams.
Added 1 hour ago
S
IT Technology Services Senior Specialist - Linux Administration, Hyperscaler, Pacemaker Operations
SAP
Toronto, ON
- Full-time
Enhanced Operations Service Senior Specialist plays a pivotal role within the SAP ECS – Enhanced Operations Service (EOS) organization, serving as a trusted advisor responsible for…
Added 1 hour ago
K
Manager, People & Change
KPMG
Vancouver, BC
- Full-time
…ways of working. The successful candidate will work alongside senior leaders to help organizations navigate complex transformations, accelerate adoption, and realize measurable business…
Added 2 hours ago
R&
Lead IT Audit Manager
Robertson & Company Ltd.
Toronto, ON
- Full-time
Act as the lead audit advisor by providing guidance on emerging trends and issues to the senior leadership team to bring about meaningful improvements.
Added 7 hours ago
Senior Technology Auditor
Rogers Communications
Brampton, ON
The Senior Technology Auditor is responsible for executing risk-based technology audits across all Rogers business units, including Wireless, Cable, Media, Corporate Functions, Shared…
Added 7 hours ago
Program Advisor (Bilingual and Non-Bilingual)
Advanced Education and Training
Winnipeg, MB
The Program Advisor plays a leadership role in enhancing program operations by analyzing existing business processes and training materials, participating on cross-functional teams as well…
Added 8 hours ago
SD
Director, Virtual Care Technology Applications
Shoppers Drug Mart
Mississauga, ON · Toronto, ON
- Full-time
Proven ability to serve as a senior technology advisor or solution leader in complex, matrixed enterprise environments.
Added 8 hours ago
Manager, Corporate Financial Reporting | Great West
The Canada Life Assurance Company
Winnipeg, MB · London, ON
…This role offers the opportunity to lead a team, partner with senior business leaders, and drive financial performance through planning, forecasting, reporting, and…
Added 9 hours ago
A
Everyday Banking Advisor - Edmonton Manning Crossing
ATB
Edmonton, AB
- Full-time
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Added 9 hours ago
AVP & Senior Counsel, Litigation
The Canada Life Assurance Company
Winnipeg, MB · London, ON · Toronto, ON
Reporting to the Vice-President & Associate General Counsel, Litigation and Employment, as an AVP & Senior Counsel, Litigation, you will be a key leader of the of the Canadian Litigation…
Added 10 hours ago
TS
Health & Safety Program Manager
The Salvation Army in Canada
Toronto, ON
- Full-time
…while preparing strategic recommendations and presentations for senior leadership and supporting special projects as…
Added 12 hours ago
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Senior Director, Issuing Solutions Sales, Canada
Visa
Toronto, ON
- Full-time
The Senior Director, Issuing Solutions Sales, Canada will serve as a senior commercial leader responsible for driving revenue growth, market expansion, and client adoption across Visa's…
Added 12 hours ago
Customer Success Manager
Rival Technologies
Vancouver, BC
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Added 12 hours ago
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Architecte Senior de Solutions (Expérience en Intelligence Artificielle)
Sopra Steria
Montreal, QC
- Full-time
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Intermediate‑Senior Civil Engineer Emissions Reduction and Compliance Group
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Mississauga, ON
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- Full-time
Pinchin is seeking an Intermediate‑Senior Civil Engineer to join our Emissions Reduction and Compliance team in Mississauga, ON. The role reports to the Operations Manager. This role…
Added 12 hours ago
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Strategic Procurement Specialist
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St. Catharines, ON · Main Campus
- Full-time
As a senior individual contributor, the Strategic Procurement Specialist independently manages procurement initiatives from early planning and stakeholder engagement through competitive…
Added 12 hours ago
P
Director of People & Culture
Portfolio+
Stouffville, ON · Canada - Stouffville, ON
- Full-time
…cutting-edge cloud technology that simplifies operations, enhances security, and drives innovation. Our team thrives in a collaborative, growth-oriented environment where ideas matter, and…
Added 12 hours ago
BC
Human Resources Manager
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Vancouver, BC
- Full-time
Serve as the primary HR subject matter expert and strategic advisor to executive leadership, directors, and committees on complex people matters, risk management, and organizational design.
Added 12 hours ago
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Architecte Senior de Solutions (Expérience en Intelligence Artificielle)
Sopra Steria
Montreal, QC
- Full-time
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Added 12 hours ago
Director, MEP & Electrical Infrastructure, Bell AI Fabric
Bell
Calgary, AB
Serve as a trusted advisor to senior leadership on infrastructure strategy, energy planning, engineering governance, and program execution.
Added 13 hours ago
Senior Solutions Architect, Financial Services
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Toronto, ON
…future with us. AWS is looking for an experienced Bilingual Senior Solutions Architect to help advise our Financial Services & Insurance (FSI) customers on how to best adopt and leverage…
Added 14 hours ago
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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…
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Conseiller(ère) sénior, Gestion des données de Foundry | Senior Advisor, Foundry Data Management
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Montreal, QC
- Full-time
Nous recherchons un(e) Conseiller(ère) sénior, Gestion des données de Foundry pour soutenir l’équipe Actifs numériques des Affaires commerciales dans la conception, l’amélioration et la…
Added 14 hours ago
B
Director, MEP & Electrical Infrastructure, Bell AI Fabric
Bell
Calgary, AB
- Full-time
Serve as a trusted advisor to senior leadership on infrastructure strategy, energy planning, engineering governance, and program execution.
Added 14 hours ago
C
Senior Manager, Health & Safety
Clutch
Mississauga, ON
- Full-time
Serve as the senior HSE advisor to Operations and People Ops on strategy, risk, investment and emerging issues.

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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