Find work in Canada.

340,590 jobs across our Canadian network. How we count

Jobs in Canada

25+ jobs

Email me new jobs Save this search

Added 1 hour ago
M
Senior Software Engineer - Customer Portfolio Enablement
Marqeta
Remote, Canada
- Full-time
- Remote
Marqeta is looking for a talented Senior Software Engineer to deliver resilient and sustainable software projects from design to implementation and rollout. You will execute on defined…
Added 2 hours ago
W
Intermediate Environmental Scientist, Engineer-in-Training or Technologist
Worley
Calgary, AB
- Full-time
As an Intermediate Environmental Scientist, Engineer-in-Training, or Technologist, you will play a key role in delivering contaminated site assessment, remediation, reclamation, and…
Added 2 hours ago
W
Senior Environmental Scientist / Engineer / Technologist
Worley
Calgary, AB
- Full-time
As a Senior Environmental Scientist / Engineer / Technologist, you will play a key role in leading contaminated site assessment and remediation programs across Alberta. This role blends…
Added 2 hours ago
W
Process Engineer Level II
Worley
Vancouver, BC
- Full-time
…they meet today's needs and transition to more sustainable…
Added 4 hours ago
E
Senior Structural Engineer
Entuitive
AB · Edmonton, AB
- $95,000 to $125,000 CAD / year
- Full-time
Entuitive is looking for a Senior Structural Engineer, based in our Edmonton office to be part of our Structural Engineering team. Take the opportunity to learn more about the structural…
Added 4 hours ago
E
Intermediate Structural Engineer
Entuitive
AB · Edmonton, AB
- $73,000 to $100,000 CAD / year
- Full-time
Entuitive is looking for an Intermediate Structural Engineer, based in our Edmonton office. Take the opportunity to learn more about the structural engineering service at Entuitive. We are…
Added 4 hours ago
W
Senior Environmental Scientist / Engineer / Technologist
Worley
AB · Edmonton, AB
- Full-time
As a Senior Environmental Scientist / Engineer / Technologist, you will play a key role in leading contaminated site assessment and remediation programs across Alberta. This role blends…
Added 4 hours ago
W
Intermediate Environmental Scientist, Engineer-in-Training or Technologist
Worley
AB · Edmonton, AB
- Full-time
As an Intermediate Environmental Scientist, Engineer-in-Training, or Technologist, you will play a key role in delivering contaminated site assessment, remediation, reclamation, and…
Added 4 hours ago
T
Sr, Mainframe Engineer, TD Securities
TD
Toronto, ON
- Full-time
TD Securities Payments Workflow Technology team is looking for a senior mainframe developer to implement solutions in alignment with the firm’s technology strategy. The team is responsible…
Added 4 hours ago
EI
Thermal Design Engineer
Exchanger Industries Limited
Calgary, AB
- Full-time
Join Our Team as a Thermal Design Engineer at Exchanger Industries Limited!
Added 4 hours ago
AW
Senior / Intermediate Civil Engineer
Agilus Work Solutions
Mississauga, ON
- Full-time
Agilus by Synergie is recruiting for a Senior/ Intermediate Civil Engineer in the Engineering consulting industry in Mississauga, Ontario.
Added 5 hours ago
PE
Structural Engineer
PTW Energy Services
Calgary, AB
- Full-time
As a Structural Engineer, you'll take ownership of projects from concept through fabrication and field support, delivering safe, practical, and cost-effective structural solutions while…
Added 5 hours ago
AW
Instrumentation and Control Engineer
Agilus Work Solutions
Calgary, AB
- Full-time
Are you an experienced Instrumentation & Controls Engineer looking to take ownership of complex industrial projects and provide technical leadership? Join a multidisciplinary engineering…
Added 5 hours ago
AM
Civil Design Engineer
Aplin Martin
Vancouver, BC
- Full-time
…dedicated professionals delivering innovative and practical design solutions, approval strategies, and project management services to our clients in BC, AB, and ON. We are dedicated to…
Added 5 hours ago
PF
Data Engineer 1
Pattison Food Group
Langley (District), BC · Langley Office - Langley BC
- Full-time
We have an exciting opportunity for a full-time Data Engineer to join our IT team in Langley, BC.
Added 6 hours ago
TS
Mining Engineer
TRS Staffing Solutions
Vancouver, BC
- $140,000 to $180,000 CAD / year
- Full-time
Provide technical support and mentorship to junior team members as required.
Added 6 hours ago
C
Electrical Project Engineer - Buildings
CIMA+
Vancouver, BC
- $92,800 to $127,600 CAD / year
- Full-time
…buildings. We are committed to providing the most cost-effective solutions to engineering challenges and offer a diverse range of projects from the initial planning stages to design and…
Added 6 hours ago
Sr Mechanical Engineer
North American Rail Solutions
Calgary, AB
…range of engineering, procurement, and construction management solutions since 2004 to the transportation, energy and agriculture industries. Our team of dedicated, agile, and efficient…
Added 7 hours ago
KE
Project Engineer / Project Manager
Keystone Environmental
Burnaby, BC
- $100,000 to $130,000 CAD / year
- Full-time
As our company continues to grow, we are looking for an experienced Project Engineer / Project Manager to join our Engineering Department in Burnaby, BC.
Added 7 hours ago
C
Electrical Project Engineer - Buildings
CIMA+
Vancouver, BC
- $92,800 to $127,600 CAD / year
- Full-time
…buildings. We are committed to providing the most cost-effective solutions to engineering challenges and offer a diverse range of projects from the initial planning stages to design and…
Added 7 hours ago
TJ
Mechanical Designer - Building Services & HVAC
The JNE Group of Companies
Hamilton, ON
- $65,000 to $90,000 CAD / year
- Full-time
Assist the lead mechanical engineer with project design, layout, and the determination of design inputs and requirements.
Added 7 hours ago
RI
Senior Full Stack Engineer - Java /
Rose International
Mississauga, ON
- Full-time
Job Title: Senior Full Stack Engineer - Java / AI
Added 7 hours ago
TT
Senior Civil Engineer
Tetra Tech
Pickering, ON
- Full-time
We are currently seeking a Senior Civil Engineer for our Pickering, ON office. This posting is for an existing vacancy for which we are actively recruiting. To perform this job…
Added 7 hours ago
A
Junior Human Factors Engineer
AtkinsRéalis
Mississauga, ON
- Full-time
…liaise with other groups and departments to provide integrated solutions to the client. With the anticipated career growth, the candidate will also enjoy mentoring and developing junior…
Added 7 hours ago
FH
IT/Communications Engineer
Fuze HR Solutions
Toronto, ON
- Full-time
We are seeking a highly motivated and talented IT/Communications Engineer to join our Building Systems Engineering team. In this role, you will provide consulting and engineering services…

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