Find work in Canada.

A simpler way to find your next job.

Jobs in Canada

25+ jobs

Email me new jobs Save this search

Added 8 mins ago
MU
Student Affairs Administrator
McGill University
Montreal, QC · Duff Medical Bldg.
- Full-time
Under the guidance of the Graduate Program Director, the Student Affairs Administrator will be responsible for student admissions, enrolment services, and helping with communications and…
Added 22 mins ago
M
Medical Office Administrator
MedSleep
Toronto, ON · Etobicoke, ON
- Full-time
Medical Office Administrator – Etobicoke, ON – Full-Time
Added 22 mins ago
C
Virtual Infrastructure Specialist
CGI
Mississauga, ON
- Full-time
We are looking for Virtualization System Administrator.
Added 22 mins ago
RR
Human Resources Manager
Red Road Recovery
Salmon Arm, BC
- Full-time
Administer corrective action policies, providing guidance to managers and leading conversations to ensure fair and consistent application.
Added 22 mins ago
C
Administrateur(trice) de systèmes middleware
CGI
Montreal, QC
- Full-time
…middleware operations? CGI is seeking a Middleware Systems Administrator to join our collaborative GTO Canada team. This is a fantastic opportunity to support stable, enterprise scale…
Added 22 mins ago
NV
Systems & Network Administrator (ID#5507)
New Value Solutions
Vancouver, BC
- Contract
New Value Solutions, a national IT consulting company, is seeking an experienced Systems & Network Administrator to provide occasional technical support for one of our clients in downtown…
Added 22 mins ago
TA
Epicor Administrator & Developer
Talent Advantage Group
Montreal, QC
- $100,000 to $140,000 CAD / year
- Full-time
2068 Epicor ERP Administrator / Developer – Manufacturing
Added 24 mins ago
Senior ARS Monitoring Analyst
AESO
Calgary, AB · KPMG Tower
…Matter Experts, Market Participants, and the Market Surveillance…
Added 53 mins ago
SC
Jr High and High School Office Administrator
STEM Collegiate
AB · Edmonton, AB
- Internship
STEM Collegiate is seeking a highly organized, professional, and dependable Office Administrator to support the daily operations of the school campus. The successful candidate will provide…
Added 53 mins ago
WC
Expression of Interest - 0.5 FTE - RECE (Registered Early Childhood Educator) at St. John Paul II (K)
Waterloo Catholic District School Board
Kitchener, ON
- Full-time
Complete any duties as assigned by Administrator or ECE Supervisor
Added 53 mins ago
YR
Secondary Long Term Occasional LTO -100% Intermediate/Senior Visual Arts
York Region District School Board
Aurora, ON
- Full-time
If you are an internal YRDSB employee, please be sure to include all of your previous teaching experiences in your application as well as two (2) references one of which must be a YRDSB…
Added 53 mins ago
YR
Secondary Long Term Occasional (LTO) 100% ESLB/ESLCO1; YREM; ESLD/ESLEO1
York Region District School Board
Vaughan, ON
- Full-time
If you are an internal YRDSB employee, please be sure to include all of your previous teaching experiences in your application as well as two (2) references one of which must be a YRDSB…
Added 53 mins ago
YR
Elementary Long Term Occasional (LTO) 100% Grade 6/7
York Region District School Board
Vaughan, ON
- Full-time
If you are an internal YRDSB employee, please be sure to include all of your previous teaching experiences in your application as well as two (2) references one of which must be a YRDSB…
Added 53 mins ago
WC
Expression of Interest - 0.5 FTE - RECE (Registered Early Childhood Educator) at St. Augustine (C)
Waterloo Catholic District School Board
Cambridge, ON
- Full-time
Complete any duties as assigned by Administrator or ECE Supervisor
Added 53 mins ago
DG
Portfolio Administrator - Insurance
DLL Group
Burlington, ON
- Full-time
As a Portfolio Administrator - Insurance, you can expect to work collaboratively with a team on validation for acceptance insurance documents, update the insurance policy details and…
Added 53 mins ago
M
Sr. Associate Workplace Specialist (AV)
McKesson
Mississauga, ON
- Full-time
Industry certifications such as CTS, CTS-I, Microsoft Teams Administrator, or related certifications.
Added 53 mins ago
YT
Retention Administrator (Contract)
YWCA Toronto
Scarborough Bluffs Park, ON
- $52,443 CAD / year
- Full-time
Internal Application Deadline: Monday, October 19, 2026
Added 53 mins ago
YT
Facilities Coordinator
YWCA Toronto
Toronto, ON
- $61,479 CAD / year
- Full-time
Internal Application Deadline: Monday, October 19, 2026
Added 1 hour ago
O
Senior Analyst, Research Operations
OICR
ON · MaRS Centre, Toronto, Ontario
- Contract
…by acting as Project Manager, Business Analyst and Systems Administrator for OICR’s budget, payments, expense reporting and financial reconciliation processes and…
Added 1 hour ago
Manager Indigenous Relations
FortisAlberta
Calgary, AB
Added 1 hour ago
MANAGER, FINANCE ENABLEMENT, TECHNOLOGY & TRANSFORMATION (HYBRID)
Green Shield Canada
Toronto, ON · Windsor, ON
…Finance functional owners, Business Technology, Technology, an application management service providers to intake, prioritize, test, deploy, and stabilize…
Added 2 hours ago
Office Manager & Executive Assistant (term)
The Banff Lake Louise Tourism Bureau
Banff, AB
…judgement and discretion to everything they do. They are a strong administrator and natural problem solver who takes initiative to keep operations running smoothly in support of BLLT's team…
Added 2 hours ago
AM
Salesforce AI & Data Cloud Solutions Engineer
AGF Management
Toronto, ON
- Full-time
Current Salesforce certifications such as Platform Administrator, Data 360 Consultant, Data Architect, Integration Architect, Agentforce Specialist, Platform Developer I/II
Added 2 hours ago
Lead, Technical Services
MongoDB
Toronto, ON
…one durable process or enablement improvement. Acquire Atlas Administrator…
Added 2 hours ago
W
Office Administrator (Rosedale Family Office)
Wellington-Altus
Toronto, ON
- Full-time
The Wellington-Altus Alcorn office is currently recruiting an Office Administrator to join our highly skilled teams specializing in customized and innovative wealth strategies for…

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 7, 2026
Posting language: English
Posted: Oct 8, 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 technical guidance for 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 hardening, 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
AS/400
PowerShell

Benefits

Competitive Compensation
Professional Development
Certification Support
Flexible Work Options

Visa sponsorship

Not detected in the job text

Keywords

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

Report this job