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Added 2 months ago
M
Systems Engineer – Satellite Ground Segment
MDA
Richmond, BC
- Full-time
We’re looking for a Systems Engineer – Satellite Ground Segment in our Geointelligence Engineering Team at our Richmond office.
Added 3 months ago
E
Senior Backend Engineer, Entities
EvenUp
Toronto, ON
- $184,728 to $249,926 USD / year
- Full-time
Engineering Excellence: Develop high-quality, maintainable code using a modern tech stack (Python, Postgres, Kubernetes, Elasticsearch).
Added 3 months ago
EA
Site Reliability Engineer III
Electronic Arts (EA)
Toronto, ON
- Full-time
As a Site Reliability Engineer, your role covers the entire lifecycle of a product-- from helping developers with architecture and delivery to on-call incident response and triage. Your…
Added 3 months ago
ES
Machine Learning Engineer - EA Sports FC
EA SPORTS
Vancouver, BC
- Full-time
Reporting to the Senior Data Science Manager, we are seeking a full-stack Machine Learning Engineer to operationalize, deploy, and scale high-impact machine learning solutions and…
Added 3 months ago
EA
Site Reliability Engineer III
Electronic Arts (EA)
Vancouver, BC
- Full-time
As a Site Reliability Engineer, your role covers the entire lifecycle of a product-- from helping developers with architecture and delivery to on-call incident response and triage. Your…
Added 3 months ago
EA
Site Reliability Engineer III
Electronic Arts (EA)
Edmonton, AB
- Full-time
As a Site Reliability Engineer, your role covers the entire lifecycle of a product-- from helping developers with architecture and delivery to on-call incident response and triage. Your…
Added 3 months ago
EA
Site Reliability Engineer III
Electronic Arts (EA)
Victoria, BC
- Full-time
As a Site Reliability Engineer, your role covers the entire lifecycle of a product-- from helping developers with architecture and delivery to on-call incident response and triage. Your…
Added 3 months ago
AI
Senior Electrical Hardware Engineer
Aversan Inc.
Mississauga, ON
- Full-time
Python programming knowledge and/or Model based design knowledge is a definite asset
Added 3 months ago
AI
Senior Hardware Test Engineer
Aversan Inc.
Mississauga, ON
- $90,000 to $120,000 CAD / year
- Full-time
We are currently seeking a qualified Senior Hardware Test Engineer to join our team. The successful candidate will be responsible for designing and developing electronic products in the…
Added 3 months ago
AI
Satellite System Engineer (CONOPS)
Aversan Inc.
Montreal, QC
- Full-time
We are currently seeking a qualified Satellite Systems Engineer (CONOPS) to join our team. The successful candidate will be responsible for define operations from launch through…
Added 2 months ago
R
Staff Engineer – Software Development, Architecture, Security & Governance
RBC
Toronto, ON
- Full-time
We are seeking a highly skilled and experienced Staff Engineer to join our Enterprise Architecture team, leveraging their expertise in full-stack development, backend engineering, API…
Added 1 month ago
R
Senior Machine Learning Engineer
Remitly
Burnaby, BC
- Full-time
As a Senior Machine Learning Engineer in Remitly's Core AI/ML team, you'll work at the heart of our AI strategy. The Core AI/ML team is responsible for building the foundational machine…
Added 2 months ago
Senior Application Security Engineer
TripleLift
Toronto, ON
The Senior Application Security Engineer plays a critical role in driving secure software development and application security maturity within TripleLift's Engineering and Security…
Added 2 months ago
T
Ingénieur(e) principal(e) en essais / Senior Test Engineer
Telesat
Gatineau, QC
- Full-time
The Senior Test Engineer will be responsible for developing and maintaining system verification and validation plans of the Telesat LEO constellation communication system. In addition, they…
Added 2 months ago
D
Senior Software Engineer (Infrastructure)
d1g1t
Toronto, ON
- Full-time
As a Senior Software Engineer, you will play a key role in driving projects from
Added 2 months ago
C
Senior Data Engineer
CarePartners
London, ON · Waterloo, ON
- Full-time
The Senior Data Engineer is responsible for the design, governance, and ongoing evolution of the organization's enterprise data environment. This role provides leadership in data…
Added 3 months ago
T(
Principal AI/ML Engineer
Tilt (f.k.a. Delphia)
Remote, Canada
- $240,000 to $320,000 USD / year
- Full-time
- Remote
…creators can author, remix, and publish strategies. We're a small, senior team (from BlackRock, Bloomberg, BGI, and Quant Funds) backed by Portage Ventures, Lerer Hippeau, Cumberland…
Added 3 months ago
L
Principal AI/ML Engineer
lululemon
Vancouver, BC
- Full-time
As a Principal AI/ML Engineer, you will define and drive implementation approaches for enterprise-scale AI initiatives that transform how lululemon operates and delivers value. You will…
Added 3 months ago
K
Senior AI Engineer - Growth
Kraken
Canada
- Full-time
As AI Engineer, Growth, you will be the second builder on this engine. Working alongside our lead architect, you execute - building, shipping, and iterating the agent orchestrations,…
Added 3 months ago
D
Staff Software Engineer
Dialpad
Vancouver, BC
- Full-time
As a Staff Software Engineer, you’ll own the platformization roadmap for shared services, architecting a plan to decouple existing functionality into highly reusable services. Your…
Added 3 months ago
A
Intermediate Full Stack Software Engineer
AltaML
Edmonton, AB
- $90,000 to $110,000 CAD / year
- Full-time
We are looking for a Full Stack Software Engineer who builds software in an AI-native way - someone who treats Claude and the latest agentic coding tools as a core part of their craft, not…
Added 3 months ago
E
Staff API Engineer
Equinix
Toronto, ON
- Full-time
…upgrades, light theming, and CI/CD. Partners closely with a Senior Staff engineer on architecture and standards, and mentors junior team members through code reviews and shared…
Added 3 months ago
A
Senior Platform Engineer
AutoTrader.ca
Toronto, ON
- Full-time
We're looking for a senior platform engineer who already works fluently with modern AI tooling and uses it to move fast. You reach for Claude, Codex, and agents to get real work shipped,…
Added 1 month ago
GS
Senior Systems Administrator
GlassHouse Systems
Toronto, ON
- Full-time
We are looking for a Senior Systems Administrator to provide hands-on infrastructure administration and technical leadership across GlassHouse Systems' internal IT environment and Managed…
Added 2 months ago
Senior Principal Software Engineer
Questrade Financial Group
Toronto, ON
We’re looking for our next Senior Principal Software Engineer. Could It Be You?

GlassHouse Systems

Senior Systems Administrator

Toronto, ON, Canada

Full-time

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Applications open in a new tab.

Job details

Job type: Full-time
Experience: · 8+ years of progressive infrastructure administration experience within enterprise IT and/or Managed Services environments, including support for multiple client infrastructures.
Posting language: English
Posted: Sep 11, 2026

Original job description

GGlassHouse Systems (GHS) is an enterprise systems and managed services solutions provider that develops, designs and deploys solutions for leading enterprises in Canada and the US. For almost 32 years, GHS has delivered an enterprise level of service and support to clients. Recognized with industry-leading awards each year, GHS translates this differentiation into positive client experiences.

We are looking for a Senior Systems Administrator to provide hands-on infrastructure administration and technical leadership across GlassHouse Systems' internal IT environment and Managed Services clients. This role will serve as the primary technical escalation point for infrastructure questions, complex incidents, and day-to-day technical decisions, escalating to the IT Manager where business, risk, budget, or governance decisions are required. The successful candidate will mentor team members, improve technical standards, and support enterprise infrastructure across on-premises, Microsoft 365, Azure, and other cloud platforms.

This hybrid position requires commuting to the Toronto office three days a week.

Responsibilities

Infrastructure Operations

· Design, deploy, and maintain IT infrastructure, including physical and virtual servers, operating systems, storage platforms, and supporting services for internal IT and Managed Services clients.

· Ensure infrastructure availability, reliability, security, and performance through proactive monitoring, maintenance, and capacity management.

· Plan and execute operating system upgrades, security patches, maintenance releases, and infrastructure lifecycle activities using enterprise management tools.

· Implement, test, and maintain backup, disaster recovery, and business continuity solutions to meet recovery objectives and compliance requirements.

· Support data centre and server room operations, including hardware deployments, equipment lifecycle management, and infrastructure support activities.

· Maintain accurate infrastructure documentation, including architecture diagrams, configuration standards, operational procedures, and technical runbooks.

· Maintain and audit software, hardware, and infrastructure asset inventories within the IT Asset Management platform.

Incident & Service Delivery

· Respond to and resolve infrastructure incidents, service requests, and operational issues in accordance with applicable service-level agreements.

· Act as the primary technical escalation point for Service Desk, L2 Support, SysAdmin, and Linux SysAdmin resources for complex infrastructure issues and technical decision-making.

· Lead root cause analysis activities for major incidents and recurring technical issues, ensuring corrective actions are implemented and tracked to completion.

· Coordinate complex technical escalations with vendors, clients, cloud providers, and internal specialist teams.

· Participate in the scheduled on-call rotation and provide after-hours support when required.

Technical Leadership

· Provide technical leadership, mentorship, coaching, and knowledge transfer to infrastructure team members while promoting operational excellence and technical growth.

· Establish and maintain infrastructure standards, operational procedures, technical governance, and best practices across internal and client environments.

· Drive automation, standardization, continuous improvement, and operational maturity initiatives to improve service quality and efficiency.

· Resolve technical decisions within delegated authority and escalate matters involving business risk, budget impact, contractual commitments, or governance requirements to management.

Platforms & Technology Ownership

· Administer and support Active Directory, Entra ID, Microsoft 365, Group Policy, and related identity and access management services.

· Support hybrid infrastructure across on-premises environments, Azure, Microsoft 365, IBM Cloud, and GCP, collaborating with the Professional Cloud team on advanced cloud engineering initiatives.

· Support Managed Services client infrastructure environments, including Windows Server, VMware, Hyper-V, Veeam, storage, backup, and related x86 platforms.

· Participate in vulnerability remediation, security hardening, compliance initiatives, change management, and operational risk management activities.

Strategic & Project Work

· Lead infrastructure projects through planning, implementation, validation, documentation, and transition to operations.

· Evaluate infrastructure technologies, architecture designs, and operational processes, and recommend improvements to enhance scalability, resiliency, security, and supportability.

Requirements

· University degree or diploma in Computer Science, Information Technology, or an equivalent combination of education, training, and relevant experience.

· 8+ years of progressive infrastructure administration experience within enterprise IT and/or Managed Services environments, including support for multiple client infrastructures.

· Strong administration experience across enterprise Windows Server and Linux environments, including physical, virtual, and hybrid cloud infrastructure.

· In-depth experience with server patching, compliance, and lifecycle management using WSUS, SCCM/MECM, BigFix, or equivalent enterprise management platforms.

· Strong VMware vSphere, Hyper-V, backup, and disaster recovery experience, including clustered, highly available, and recovery-enabled environments.

· Strong knowledge of SAN/NAS storage, Fibre Channel concepts, and core networking technologies including TCP/IP, DNS, DHCP, VPN, FTP, and SFTP.

· Advanced experience with Active Directory, Entra ID, Group Policy, authentication, identity lifecycle management, and hybrid identity services.

· Hands-on experience supporting Azure and Microsoft 365 environments, with the ability to provide L2 operational support for GCP and IBM Cloud environments.

· Experience configuring, maintaining, and improving enterprise monitoring and alerting platforms such as ManageEngine, Checkmk, or similar solutions.

· Ability to lead complex technical escalations, major incident resolution, root cause analysis, and corrective actions across infrastructure and performance-related issues.

· Demonstrated experience leading infrastructure projects, technical implementations, migrations, operational handovers, and transition-to-support activities.

· Ability to review infrastructure designs, assess risk, plan capacity, and recommend improvements for scalability, resiliency, security, and operational efficiency.

· Experience coordinating service delivery and technical escalations with vendors, clients, cloud providers, and internal stakeholders.

· Experience mentoring technical resources and providing technical leadership across Service Desk, L2 Support, SysAdmin, and Linux SysAdmin teams.

· Strong understanding of security hardening, vulnerability remediation, compliance requirements, change management, and operational risk management.

· Experience working with ITSM platforms such as ServiceNow, with strong technical documentation skills including diagrams, runbooks, standards, procedures, and knowledge articles.

· Ability to participate in on-call rotation and occasionally travel to client sites and data centers within the Greater Toronto Area.

Nice to Have

· VMware Certified Professional (VCP).

· Microsoft Certified: Azure Administrator Associate.

· Microsoft Certified: Identity and Access Administrator Associate.

· Windows Server Hybrid Administrator Associate or equivalent Microsoft infrastructure certification.

· Veeam Certified Engineer (VMCE) or equivalent backup-platform certification.

· Advanced Linux administration experience in enterprise or managed services environment.

· Experience with IBM Cloud, Rubrik, Zerto, IBM Spectrum Protect/TSM, Fibre Channel switches, or VTL.

· PowerShell scripting; working knowledge of Python, Ansible, or Infrastructure-as-Code tools.

· Experience with enterprise networking technologies, including LAN/WAN, TCP/IP, routing, switching, VPNs, firewalls, and network troubleshooting

Personal attributes

· Technical leadership and sound, risk-aware decision making under pressure.

· Strong ownership, accountability, reliability, and attention to detail.

· Ability to influence technical direction without direct authority.

· Proven mentoring, coaching, collaboration, and knowledge-transfer skills.

· Clear written and verbal communication with technical teams, management, vendors, clients, and non-technical stakeholders.

· Calm, structured incident response and strong analytical troubleshooting.

· Ability to balance operational priorities, client commitments, technical debt, and long-term infrastructure improvements.

· Strong planning, prioritization, documentation, and change-control discipline.

· Commitment to continuous improvement and service quality.

Disclaimer

The rate for this position is $90K-110K. The rate is subject to change and may be modified in the future.

What you'll get:

Competitive salary

Health benefits (medical, vision, dental)

Life insurance

Pension plan

Professional development

Amazing company culture

Free parking

Gym on-site

Join a team of professionals led by a diverse set of leaders from across the industry.

GlassHouse Systems commitment:

We believe that a diverse team is the key to innovation and growth. We are an equal opportunity employer that values diversity at our company and encourages all candidates to apply. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

GlassHouse Systems will accommodate individuals with disabilities through each stage of the recruitment process. Please advise us of any needs when your interview is booked and we will do our best to meet your needs.

Please note that all candidates have to be legally eligible to work in Canada.

Any offer of employment will be conditional upon a criminal record check.

GlassHouse Systems thanks all candidates for their interest, however only those selected to continue in the process will be contacted.

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More about this job

Responsibilities

The Senior Systems Administrator will design, deploy, and maintain enterprise infrastructure while providing technical leadership and mentorship to the team. This role serves as the primary escalation point for complex incidents and ensures operational excellence across internal and client environments.

Requirements

Candidates must have at least 8 years of progressive infrastructure administration experience in enterprise or managed services environments. A university degree or diploma in Computer Science or Information Technology is required, along with strong expertise in hybrid cloud and on-premises server management.

Skills

Infrastructure administration
Windows Server
Linux
Azure
Microsoft 365
VMware vSphere
Hyper-V
Active Directory
Entra ID
Disaster recovery
SAN/NAS storage
Technical leadership
Automation
Root cause analysis
Vulnerability remediation
ITSM

Benefits

Health benefits
Medical insurance
Vision insurance
Dental insurance
Life insurance
Pension plan
Professional development
Gym on-site
Free parking

Visa sponsorship

Not detected in the job text

Keywords

Systems Administration
Infrastructure
Managed Services
Azure
Microsoft 365
VMware
Hyper-V
Active Directory
Entra ID
Veeam
SAN
NAS
TCP/IP
DNS
DHCP
VPN
ServiceNow
Automation
Security Hardening
Compliance
Change Management
Root Cause Analysis
Cloud Computing
Identity Management
Lifecycle Management
IT Asset Management
Enterprise IT
Technical Leadership
Mentorship
Hybrid Infrastructure

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