Find work in Canada.

334,941 jobs across our Canadian network. How we count

Jobs in Canada

25+ jobs

Email me new jobs Save this search

Added 1 hour ago
S
IT Technology Services Senior Specialist - Linux Administration, Hyperscaler, Pacemaker Operations
SAP
Toronto, ON
- Full-time
Added 2 hours ago
R&
End User Systems Support Specialist
Robertson & Company Ltd.
Toronto, ON
- Full-time
…processes and contributes to technology recovery and resilience…
Added 2 hours ago
TU
Teacher - Temporary - Torrance Meridian Academy - ONLINE/HYBRID PROGRAM
Torrance Unified School District
Torrance, ON
- Temporary
Under the direction of the site administrator, teacher leadership team, and/or designated program lead, the Teacher designs and facilitates innovative, engaging, student-centered learning…
Added 3 hours ago
IB
Senior Business Analyst, Salesforce
IVEY BUSINESS SCHOOL FOUNDATION
London, ON
- $85,309 to $106,636 CAD / year
- Full-time
- Contract
…stakeholder consultation process necessary for the successful planning, designing, building, testing, and support of intricate IT challenges, particularly within…
Added 4 hours ago
B
Design Team Project Administrator
Boardwalk
Calgary, AB
- Full-time
We're looking for a Project Administrator who thrives on organization, enjoys working with numbers, and takes pride in being the person who keeps projects moving forward.
Added 7 hours ago
Coordinator, Marketing
Maison Birks
Montreal, QC
Responsible for tracking invoices for all Birks coop and bookings, provide accurate reports to the Marketing Administrator.
Added 7 hours ago
JC
Private Equity Fund Administration Senior Associate
JPMorgan Chase & Co.
Toronto, ON
- Full-time
…strategic insight. Our teams deliver end‑to‑end financial control, planning and analysis, forecasting, and management reporting that enable leaders to make informed decisions and maintain…
Added 8 hours ago
CA
Construction Administrator / CA Lead
Coles Associates Ltd
Charlottetown, PE
- Full-time
We are seeking a Construction Administrator / CA Lead to join our Charlottetown, PEI office. In this role, you will support the successful delivery of projects through the construction…
Added 8 hours ago
WC
Project Manager
Wealthridge Construction Ltd.
Timmins, ON
- Full-time
Proven working experience as a project administrator in the information technology sector
Added 9 hours ago
SH
Database Administrator
Sotera Health
Ottawa, ON
- Full-time
Reporting to the Manager of Database Services and Application, the Database Administrator role is responsible for managing Oracle and SQL server databases, ensuring their availability,…
Added 9 hours ago
RG
PROPERTY ADMINISTRATOR
Rank Group
Halifax, NS
- Full-time
…property management, property maintenance, space design and planning. We thrive on building mutually open and honest relationships with our clients in all our projects, which is evidenced…
Added 10 hours ago
MB
Coordinator, Marketing
Maison Birks
Montreal, QC
- Full-time
Responsible for tracking invoices for all Birks coop and bookings, provide accurate reports to the Marketing Administrator.
Added 11 hours ago
EN
QHSE Administrator (Contract position up to 18 months)
Echo NDE
AB · Red Deer County, AB
- Temporary
Strong administrative, organizational, and planning skills.
Added 12 hours ago
Human Resources Administrator (4 Month Contract)
North American Rail Solutions
Caledon, ON
Join Our Team as a Human Resources Administrator
Added 12 hours ago
MP
human resources administrator
Merlin plastics
New Westminster, BC
- $22 to $24 CAD / hour
- Full-time
- On-site
Added 12 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 12 hours ago
BB
Workplace Experience & Operations Coordinator
Bond Brand Loyalty
Toronto, ON
- $53,000 to $65,000 CAD / year
Future-focused: Retirement planning assistance with company matching.
Added 13 hours ago
AL
AltaGas - Fuel Office Administrator, Yellowknife
AltaGas Ltd.
Remote_Canada
- Full-time
AltaGas is seeking a Fuel Office Administrator to join the Enerchem Partnership team in Yellowknife, Northwest Territories. This position is responsible for providing administrative,…
Added 13 hours ago
E
Administrateur de projet/Project Administrator
EllisDon
Quebec, QC · QC
- Full-time
Added 13 hours ago
E
Virtual Design and Construction Coordinator
EllisDon
Ottawa, ON · ON · Ontario Projects
- Full-time
…creating 3D information for the purpose of estimating, logistics, planning, scheduling, coordination, field layout and/or facilitates…
Added 13 hours ago
Mobile Application Store Analyst
Government of Alberta
AB
The Citizen Experience branch within DDD is accountable for supporting ministry programs through the planning, development, delivery and operations of user-centered common platform…
Added 14 hours ago
SS
Azure Infrastructure Engineer
Sonata Software North America Inc.
Toronto, ON
- Full-time
…Architecture and Strategy Proven track record in successfully planning, deploying, operating, and optimizing cloud environments Azure certifications (Azure Solutions Architect…
Added 14 hours ago
SS
Project Estimator (Residential)
Summit Search Group
Winnipeg, MB
- Full-time
Added 14 hours ago
I
Senior Systems Engineer
illumin
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Perform capacity planning, lifecycle management, performance analysis, and reliability improvements across infrastructure platforms.
Added 14 hours ago
EC
SQL Database Administrator
Experis Canada
Montreal, QC
- Contract

OnX

Sr. Engineer System administrator

Toronto, ON, Canada

Full-time

Apply About employer

Applications open in a new tab.

Job details

Job type: Full-time
Apply by: Nov 5, 2026
Posting language: English
Posted: Oct 6, 2026

Original job description

OnX is a leading Canadian technology solutions provider helping organizations modernize, secure, and optimize their IT environments. We partner with clients across industries to deliver innovative infrastructure, cloud, security, and managed services solutions that drive business success.

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 enterprise environments and enjoys managing mission-critical server infrastructure across Windows, Linux, and cloud platforms.

What You'll Do

As a Senior Systems Administrator, you will be responsible for maintaining, optimizing, and securing enterprise server environments while ensuring the highest levels of performance, availability, and compliance.

Key Responsibilities

Administer and support enterprise Windows and Linux server environments.
Perform operating system installation, configuration, patching, upgrades, and lifecycle management.
Monitor system health, performance, and availability, proactively identifying and resolving issues.
Implement infrastructure improvements that enhance scalability, resiliency, and operational efficiency.
Manage enterprise security baselines, vulnerability remediation efforts, and system hardening activities.
Support cloud-based infrastructure across AWS and Microsoft Azure environments.
Automate operational processes using scripting and automation tools.
Collaborate with networking, security, application, and cloud teams to deliver integrated technology solutions.
Perform capacity planning and growth forecasting for server and compute environments.
Maintain technical documentation, operational procedures, and knowledge articles.
Mentor junior team members and provide technical guidance on infrastructure best practices.

Required Qualifications

Education

Bachelor's degree in Computer Science, Information Technology, Engineering, Telecommunications, or a related technical discipline.

Experience

6+ years of overall IT infrastructure experience.
5+ years of hands-on systems administration experience in enterprise environments.

Technical Skills

Required

Linux Administration
Windows Server Administration (Wintel)
Unix Administration
Infrastructure Monitoring and Troubleshooting
Operating System Patching and Maintenance
Performance Optimization
Security Hardening and Compliance
Server Lifecycle Management

Preferred

AWS Administration
Microsoft Azure Administration
Citrix XenServer
Sun Solaris
AS/400
WSUS
Python
Bash Scripting
PowerShell

Desired Competencies

Infrastructure Provisioning & Configuration Management
Performance Monitoring & Optimization
Virtualization Technologies
Automation & Scripting
Security & Compliance Management
Capacity Planning & Resource Management
Strong Problem-Solving Skills
Effective Communication
Ownership and Accountability
Collaboration and Teamwork
Customer-Focused Mindset

Success Measures

In this role, success will be measured through:

Infrastructure uptime and SLA achievement
Reduced incident resolution times (MTTR)
Security compliance and vulnerability remediation performance
Increased automation and operational efficiency
Adherence to infrastructure standards and governance practices

Why Join OnX?

Work with modern infrastructure and cloud technologies.
Collaborate with experienced technology professionals across Canada.
Gain exposure to enterprise-scale environments and strategic initiatives.
Competitive compensation and benefits package.
Professional development and certification support.
Flexible work options depending on role requirements.

CAD $62,000 – $82,000 base salary (not including bonus or commission)

The compensation range in this posting reflects the Company’s good‑faith estimate at the time of publication. The applicable base pay range for any individual will be determined based on the candidate’s designated primary work location as well as factors including role scope and responsibilities, required qualifications, and the individual’s experience, education, skills, knowledge, and performance. Certain positions may also be eligible for additional compensation such as discretionary merit increases, bonuses, or sales‑based variable compensation in accordance with applicable plans and role requirements.

Diversity & Inclusion

OnX is an equal opportunity employer committed to creating an inclusive environment for all employees. We celebrate diversity and are dedicated to fostering a workplace where everyone can thrive regardless of race, religion, gender, age, disability, sexual orientation, or any other protected characteristic.

Apply About employer

More about this job

Responsibilities

Administer, maintain, secure, and optimize enterprise Windows and Linux server environments, including operating system lifecycle management, monitoring, troubleshooting, and cloud infrastructure support across AWS and Azure. Improve infrastructure resilience and efficiency through automation, capacity planning, documentation, cross-team collaboration, and mentoring junior team members.

Requirements

Requires a bachelor's degree in Computer Science, Information Technology, Engineering, Telecommunications, or a related technical discipline, along with at least six years of overall IT infrastructure experience. Candidates must have at least five years of hands-on enterprise systems administration experience and skills in Linux, Windows Server, Unix, monitoring, patching, performance optimization, security, and server lifecycle management.

Skills

Linux Administration
Windows Server Administration
Unix Administration
Infrastructure Monitoring
Troubleshooting
Operating System Patching
Performance Optimization
Security Hardening
Compliance Management
Server Lifecycle Management
AWS Administration
Citrix XenServer
Sun Solaris
Python
PowerShell

Benefits

Professional Development Support
Certification Support
Flexible Work Options

Visa sponsorship

Not detected in the job text

Keywords

Linux
Windows Server
Unix
AWS
Microsoft Azure
Citrix XenServer
Sun Solaris
AS/400
WSUS
Python
Bash
PowerShell
Infrastructure Monitoring
Troubleshooting
Operating System Patching
Performance Optimization
Security Hardening
Compliance
Server Lifecycle Management
Infrastructure Provisioning
Configuration Management
Virtualization
Automation
Capacity Planning
Vulnerability Remediation
Enterprise Infrastructure
Cloud Infrastructure
Incident Resolution
Service Level Agreements
Technical Documentation

Report this job