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Added 10 mins ago
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Manager, Client Success
GovAI
Waterloo, ON
- $100,000 to $130,000 CAD / year
- Full-time
The Manager, Client Success leads the team responsible for ensuring GovAI’s customers achieve measurable value from the company’s products and services. This role oversees Client Success…
Added 12 mins ago
SL
Vice President, Product Management
Sitero LLC
Mississauga, ON
- Full-time
…our growing portfolio of eClinical and eCompliance technology solutions. This is a senior leadership role reporting to the executive team, responsible for driving product strategy across…
Added 22 mins ago
TP
Executive Coordinator
TDS Personnel
Markham, ON
- $30 to $34 CAD / hour
- Temporary
Our client, a professional services firm located close to Markham is seeking an Executive Coordinator to provide support to a small group of senior leaders while helping ensure the smooth…
Added 22 mins ago
MT
320704 - Marketing Manager
MT Talent Solutions Inc.
London, ON
- Full-time
Why Are We Looking for You? We are proud to support our confidential client in hiring a Marketing Manager for an exciting opportunity within a growing and innovative organization. Our…
Added 26 mins ago
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Client Executive, Fintech
TransUnion
Burlington, ON
- Full-time
We are seeking a Client Executive with exceptional sales and relationship skills to be part of our exciting journey!
Added 26 mins ago
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Executive Assistant
TD
Toronto, ON
- Full-time
…commitments we make to our customers and greater communities, our executive team seeks out and relies on exceptional people for support. Alongside caring colleagues and supportive leaders,…
Added 26 mins ago
C
Estate Planning Specialist
CIBC
Richmond, BC
- Full-time
As a member of the Wood Gundy team, you will be responsible for building and growing Wood Gundy client portfolios through dedicated relationship management, trusted investment advice and…
Added 26 mins ago
HI
Account Executive, Employee Benefits
HUB International
Grande Prairie, AB
- Full-time
As an Account Executive, Employee Benefits you are responsible for supporting medium to large sized clients with superior service and essential advice. You will work to create affordable,…
Added 26 mins ago
HI
Executive Assistant
HUB International
Vancouver, BC
- Full-time
The Executive Assistant provides high-level administrative and event coordination support to the incoming President, Chief Sales Officer and Executive Management Team.
Added 26 mins ago
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Summer 2027 Internship Program - Executive Search
Egon Zehnder
Remote, Canada
- Remote
…enterprises, and non-profit and government agencies to provide executive search, leadership solutions, CEO search and succession, and board…
Added 26 mins ago
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Technical Project Manager
Symbiotic Digital
Toronto, ON · Queen's Park Ontario Provincial Government, Ontario
- Contract
and prioritize issues and risks at senior executive levels and recommend
Added 39 mins ago
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Senior AI Architect
AltaML
Toronto, ON
- $100,000 to $150,000 CAD / year
- Full-time
AltaML is an applied artificial intelligence company, building and deploying solutions for organizations where the problems are real and the stakes are high, across public sector,…
Added 41 mins ago
RB
Senior Director, AI Business Enablement
Royal Bank of Canada
Toronto, ON
- Full-time
…the vision, building the opportunity pipeline, and ensuring executive alignment from ideation through to program framing and…
Added 41 mins ago
SC
ERP Global Transformation Director (70311934)
Sodexo Canada Ltd
Mississauga, ON
- Full-time
Grow your career with a company that shares your passion! Our Sodexo team has an exciting new client opportunity to join Sodexo as our next ERP Global Transformation Director located in…
Added 52 mins ago
BC
Practice Leader/Subject Matter Expert (SME), Mine Tailings Facility Management & Engineer of Record
BBA Consultants
Montreal, QC
- Full-time
…experts. This strategic role combines technical leadership, client engagement, practice development and contributions to complex mining projects in Canada and…
Added 52 mins ago
BC
Practice Leader/Subject Matter Expert (SME), Mine Tailings Facility Management & Engineer of Record
BBA Consultants
Mont-Saint-Hilaire, QC · Mont-St-Hilaire, QC
- Full-time
…experts. This strategic role combines technical leadership, client engagement, practice development and contributions to complex mining projects in Canada and…
Added 52 mins ago
BC
Practice Leader/Subject Matter Expert (SME), Mine Tailings Facility Management & Engineer of Record
BBA Consultants
Mont-Tremblant, QC
- Full-time
…experts. This strategic role combines technical leadership, client engagement, practice development and contributions to complex mining projects in Canada and…
Added 54 mins ago
BC
Practice Leader/Subject Matter Expert (SME), Mine Tailings Facility Management & Engineer of Record
BBA Consultants
Val-d'Or, QC
- Full-time
…experts. This strategic role combines technical leadership, client engagement, practice development and contributions to complex mining projects in Canada and…
Added 54 mins ago
BC
Practice Leader/Subject Matter Expert (SME), Mine Tailings Facility Management & Engineer of Record
BBA Consultants
Sudbury, ON
- Full-time
…experts. This strategic role combines technical leadership, client engagement, practice development and contributions to complex mining projects in Canada and…
Added 54 mins ago
BC
Practice Leader/Subject Matter Expert (SME), Mine Tailings Facility Management & Engineer of Record
BBA Consultants
Quebec, QC
- Full-time
…experts. This strategic role combines technical leadership, client engagement, practice development and contributions to complex mining projects in Canada and…
Added 54 mins ago
BC
Practice Leader/Subject Matter Expert (SME), Mine Tailings Facility Management & Engineer of Record
BBA Consultants
Toronto, ON
- Full-time
…experts. This strategic role combines technical leadership, client engagement, practice development and contributions to complex mining projects in Canada and…
Added 54 mins ago
FC
Senior Contracts Manager
Fluor Corporation
Calgary, AB
- Full-time
…on innovation and providing cost-effective technology-based solutions is second to none. As we look to the future, we need creative, ambitious, and innovative professionals who can help us…
Added 56 mins ago
C
Learning and Development Program Manager
CareerJoy
Ottawa, ON
- Full-time
…global virtual delivery model, we offer leadership development, executive coaching, career transition, and team engagement…
Added 56 mins ago
T
Senior Manager – Product Owner
TD
Toronto, ON
- Full-time
…enterprise-wide programming, developing and implementing best-in- class solutions that are scalable in support of enterprise/ business…
Added 1 hour ago
TC
Production Support Lead
Tata Consultancy Services
Toronto, ON · Greater Toronto Area, Canada
- $90,000 to $100,000 CAD / year
- Full-time
Own operational reporting, KPI tracking, SLA monitoring, and executive dashboards.

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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