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Added 4 mins ago
SH
General Duty Nurse (N2) - Women's Health Labour & Delivery
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 4 mins ago
SH
General Duty Nurse (N2) - Child Health - CK3 Surgery
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 4 mins ago
SH
General Duty Nurse (N2) - Women's Health Labour & Delivery
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 4 mins ago
SH
General Duty Nurse (N2) - Women's Health Labour & Delivery
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 4 mins ago
SH
General Duty Nurse (N2) - NICU
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 35 mins ago
SH
General Duty Nurse (N2) - Child Health - CK3 Surgery
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 35 mins ago
SH
General Duty Nurse (N2) - Ambulatory Care - Urology Clinic & Procedures
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 35 mins ago
SH
General Duty Nurse (N2) - Child Health - JL3 Pediatric ICU
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 35 mins ago
SH
General Duty Nurse (N2) - Child Health - CK3 Surgery
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 35 mins ago
SH
General Duty Nurse (N2) - Child Health - JL3 Pediatric ICU - PICU
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 35 mins ago
SH
General Duty Nurse (N2) - Child Health - JL3 Pediatric ICU
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 35 mins ago
SH
General Duty Nurse (N2) - Women's Health Mother Baby Unit
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 35 mins ago
SH
Registered Psychiatric Nurse/Nurse (N2) - SMHC
Shared Health-Soins Communs
Selkirk, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 35 mins ago
SH
General Duty Nurse (N2) - Child Health - CK3 Surgery
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 35 mins ago
SH
General Duty Nurse (N2) - Child Health - CK3 Surgery
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 35 mins ago
SH
General Duty Nurse (N2) - Women's Health Labour & Delivery
Shared Health-Soins Communs
Winnipeg, MB
- Full-time
…needs. These services include independent nursing services, administration of prescribed medical treatments, a leadership role within the healthcare team, and facilitating coordination of…
Added 35 mins ago
S
IT Technology Services Senior Specialist - Linux Administration, Hyperscaler, Pacemaker Operations
SAP
Toronto, ON
- Full-time
…company-specific configurations and customizations of their SAP ERP system, and accessing the latest capabilities that give their company a competitive…
Added 35 mins ago
FH
Registered Nurse/Registered Psychiatric Nurse, Community Mental Health & Substance Use Services - Burnaby
Fraser Health
Burnaby, BC · New Westminster, BC
- Part-time
…recovery and rehabilitation, reducing barriers to enter the system of care, and promoting a culturally-safe and responsive, trauma-informed approach, establishes a welcoming therapeutic…
Added 1 hour ago
TH
Administrative Co-Ordinator - Haematology/Oncology
The Hospital for Sick Children
Toronto, ON
- Full-time
…Clinician Educators and Clinician Administrators in the areas of administration, academic, clinical, research, finance, and sectional/divisional activities in the Division of…
Added 1 hour ago
R&
End User Systems Support Specialist
Robertson & Company Ltd.
Toronto, ON
- Full-time
Maintenance: Perform updates, vulnerability remediation, and routine system checks.
Added 1 hour ago
AI Software Intern (Canada)
Tenstorrent University Jobs
Toronto, ON
Scale Out: communication and coordination between devices in a distributed AI system.
Added 2 hours ago
CO
Application & Integration Technical Analyst
City of Saint John
Saint John, NB
- Full-time
…Integration Technical Analyst is a technical lead responsible for system architecture, data strategy, and integration frameworks, ensuring the reliability, scalability, and security of…
Added 2 hours ago
BW
Anesthesia Assistant, Anaesthesia Tech Services - BC Women’s Hospital & Health Centre
BC Women's Hospital and Health Centre
Vancouver, BC
- Full-time
…Anti-racism Data Act and how they intersect across the health care…
Added 2 hours ago
S
Anesthesia Assistant, Anaesthesia Tech Services - BC Women’s Hospital & Health Centre
Sanya’k̓ula
Vancouver, BC
- Full-time
…Anti-racism Data Act and how they intersect across the health care…
Added 2 hours ago
BA
Lead Business Analyst
BC Assessment
Victoria, BC
- Full-time
…software engineering, or equivalent. University degree in business administration or finance (plus related IM/IT courses) will be…

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

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