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Added 29 mins ago
Senior GIS Data Analyst
City of Niagara Falls
Niagara Falls, ON
$71,655 to $89,570 CAD / year
Contract
Providing technical assistance and support to both the GIS Administrator and GIS Senior Project Analyst as workload dictates and/or at the discretion of the Manager of GIS Services.
Added 29 mins ago
Windows Server Administrator
Hays
Toronto, ON
Full-time
Added 29 mins ago
Application Specialist
Toronto Public Library
Toronto, ON
$93,948.4 to $106,000 CAD / year
Full-time
Acting as the Application Systems Administrator and as a technical Subject Matter Expert for assigned applications.
Added 59 mins ago
Design Manager – Defence & Federal Projects
GHD Group Pty Ltd
Toronto, ON
Responsible for developing or verifying the technical scope of a project and working with disciplines to provide pricing during proposal, and subsequently work planning following project…
Added 59 mins ago
Bilingual Account Manager - Small Business Consulting, Gallagher Benefit Services
Gallagher
Ottawa, ON
Full-time
At Gallagher Benefit Services, you’re a trusted partner to organizations navigating some of their most important people decisions. We help clients build better workplaces, where people feel…
Added 1 hour ago
Senior Plan Administrator (Group Benefits)
First Canadian Financial Group
Edmonton, AB
Full-time
A division of an established Canadian financial services organization, we have the stability and resources behind us to build for the future while remaining small enough that talented…
Added 1 hour ago
Data Entry Analyst (Administrator) - Coquitlam, BC
Intertek Canada
Coquitlam, BC
By delegation from the Lab Manager, Construction Services, the Data Entry Analyst (Administrator) is responsible for providing effective and competent support to Intertek Testing Services…
Added 2 hours ago
Lead PET Technologist S2 Up to 8 FTE
Provincial Health Services Authority
Kelowna, BC
Full-time
…policies of BC Cancer, performs supervisory, administrative and technical duties within the Functional Imaging Department. Duties include supervising designated staff, coordinating the work…
Added 8 hours ago
Windows Server Administrator
The Citco Group Limited
Toronto, ON
Full-time
Armed with superior services, smart people, and strong technology, we tackle our customers’ complicated challenges by developing sophisticated solutions driven directly by their demands.…
Added 9 hours ago
Data Analyst (Community Services)
Region of Waterloo
Waterloo, ON
…prioritize homes for all, climate aligned growth, equitable services and opportunities and a resilient and future ready organization. Our mission is to provide essential services that…
Added 9 hours ago
Project Manager, IT Project Management
Health Sciences North
ON · Sudbury, ON
…quality implementation of Information Technology (IT) systems and services, utilizing project management best…
Added 9 hours ago
Project Manager, IT Project Management
Health Sciences North
ON · Sudbury, ON
…quality implementation of Information Technology (IT) systems and services, utilizing project management best…
Added 12 hours ago
Salesforce Technical Architect - Financial Services Cloud, Marketing Cloud & Data360 - Manager
EY
Toronto, ON · Montreal, QC
We're looking for a senior, hands-on technical architect - someone with deep Financial Services Cloud implementation experience who still configures, codes, and builds, not just designs on…
Added 14 hours ago
Office Admin
Lifemark Health Group
Mississauga, ON
Up to $40,000 CAD / year
Full-time
We are seeking an energetic, enthusiastic, and highly proactive Office Administrator to join our fast-paced team. The ideal candidate is a quick-thinking professional who thrives in a…
Added 14 hours ago
Finance & Administrative Coordinator
Simon Fraser University
Burnaby, BC
Full-time
The ideal candidate is a detail‑oriented and proactive administrator with strong financial acumen and a collaborative approach to problem‑solving. They excel at interpreting financial…
Added 15 hours ago
Facility Manager III
BGIS
Montreal, QC
Full-time
Facility Management Administrator Designation through Building Owners and Managers Institute (BOMI).
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Lease Administrator - Corporate Services
Graham
Calgary, AB
Full-time
Graham is actively recruiting for a Lease Administrator supporting the Corporate Services Division. Reporting to the Facilities Director the Lease Administrator plays a key role in…
Added 16 hours ago
Sr. System Administrator
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AB · Calgary, AB
Full-time
The Senior Systems Administrator owns DIRTT's core infrastructure platforms: compute (VMware, Hyper-V, and AWS), storage (NetApp ONTAP), and identity and access management (Active Directory…
Added 16 hours ago
Technical Administrator
Sanofi
Toronto, ON
Full-time
Train technical staff comply to cGMP, HSE and SOP requirements.
Added 16 hours ago
Senior Programmer/Database Administrator - Initiatives/Opportunities
Fanshawe College
London, ON
Full-time
Mandatory five years experience with SQL Server, SQL Server Integration Services, and SQL Server Reporting Services
Added 16 hours ago
Infra / Cloud & GenAI Architect
Tata Consultancy Services
Calgary, AB
Full-time
…the country's leading organizations. As one of the largest IT services providers in Canada and globally, TCS is aiming to become the world's largest AI-led technology services company and…
Added 16 hours ago
Factory IT Technician - Bolton Pet Plant
Mars
Bolton, ON · BPP-Mars Canada Inc.
Full-time
Ensure delivery of Factory OT/IT related services to the site, provides support and first point of contact for all production OT/IT related systems while following applicable…
Added 17 hours ago
Level 2 3 Network Administrator & Projects Specialist (35949)
Myticas Consulting
Ottawa, ON
Full-time
…onboardings, they are looking to add an experienced Level 2/3 Network Administrator & Projects Specialist to their Professional Services…
Added 17 hours ago
Senior Backup Administrator
Hays
Toronto, ON
Full-time
Develop and maintain operational documentation, runbooks, knowledge base articles, technical diagrams, and standard operating procedures.
Added 17 hours ago
Senior Software Developer
ADGA Group Consultants Inc
Ottawa, ON
$100,000 to $125,000 CAD / year
Full-time
ADGA Group is a Canadian-owned defence and security company that provides integrated, mission-critical technical solutions to Government and industry, specializing in C5ISRT, simulation and…

Perseus Group, Constellation Software

Senior Systems Administrator – M365 & Infrastructure

Markham, ON, Canada

Job type: Full-time
Experience: 7+ years of IT infrastructure and systems administration experience
Posting language: English
Posted: Sep 28, 2026

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Applications open in a new tab.

Original job description

Position Summary

Constellation HomeBuilder Systems is seeking a Senior Systems Administrator / M365 & Infrastructure Administrator to join our Information Technology team in Markham, Ontario.

This role will be responsible for the administration, security, governance, and strategic operation of our Microsoft 365 environment, Microsoft Entra ID platform, endpoint management systems, and collaboration technologies. The position will own technology services and responsibilities transitioning from shared corporate IT services as part of our integration with Jonas.

The successful candidate will serve as a senior technical resource responsible for identity and access management, Microsoft 365 administration, endpoint management, collaboration platforms, security governance, and infrastructure support. This individual will work closely with leadership, business stakeholders, and external vendors to ensure secure, reliable, and scalable technology services across the organization.

Primary Responsibilities

Identity & Access Management

Administer and maintain Microsoft Entra ID

Manage user provisioning, deprovisioning, and lifecycle management

Configure and maintain Single Sign-On (SSO) integrations

Design and administer Conditional Access policies

Manage Multi-Factor Authentication (MFA) technologies

Administer external collaboration and B2B access

Conduct identity governance reviews and access certifications

Manage Microsoft licensing and group-based assignments

Maintain role-based access controls and security standards

Microsoft 365 Administration

Administer Microsoft 365 services including:

Exchange Online

Teams

SharePoint Online

OneDrive

Power Platform

Power BI

Manage retention and compliance policies

Configure and maintain mail flow and transport rules

Administer SPF, DKIM, and DMARC configurations

Implement and maintain Microsoft security controls

Support tenant governance and security best practices

Monitor service health and platform performance

Evaluate and implement new Microsoft 365 capabilities

Endpoint Management

Administer Microsoft Intune

Manage Windows Autopilot deployments

Develop and maintain device compliance policies

Manage application deployment and lifecycle management

Oversee workstation configuration standards

Manage endpoint patching and security updates

Support remote workforce technologies

Voice & Collaboration

Administer Microsoft Teams Phone

Support TouchPoint and related communication systems

Troubleshoot voice and collaboration issues

Coordinate with telecom and technology vendors

Manage call routing, auto attendants, and user provisioning

Ensure reliable collaboration services across the organization

Infrastructure & Security

Support core Windows infrastructure services

Participate in infrastructure modernization initiatives

Assist with cloud and hybrid infrastructure administration

Maintain security baselines and operational standards

Participate in security investigations and remediation efforts

Create and maintain system documentation, procedures, and standards

Participate in disaster recovery and business continuity planning

Qualifications

Required

7+ years of IT infrastructure and systems administration experience

5+ years administering Microsoft 365 environments

Strong experience with Microsoft Entra ID

Experience implementing and supporting SSO and Conditional Access

Experience with Exchange Online, SharePoint Online, and Teams

Experience administering Microsoft Intune and Windows Autopilot

Strong understanding of Microsoft licensing and tenant governance

Experience supporting cybersecurity and compliance initiatives

Strong troubleshooting, analytical, and problem-solving skills

Excellent written and verbal communication skills

Preferred

Microsoft certifications such as:

Microsoft Certified: Identity and Access Administrator

Microsoft Certified: Enterprise Administrator Expert

Microsoft Certified: Security Administrator Associate

Microsoft Certified: Endpoint Administrator Associate

Experience with Teams Phone

Experience with Power BI administration

Experience with Palo Alto Networks security solutions

Experience supporting mergers, acquisitions, or tenant migrations

Experience working in SaaS or software organizations

Knowledge of Azure services and cloud administration

Success Measures

The successful candidate will:

Maintain a secure and compliant Microsoft 365 environment

Ensure timely onboarding and offboarding processes

Maintain high endpoint compliance and patching standards

Deliver reliable collaboration and communication services

Improve operational efficiency through automation and standardization

Maintain accurate documentation and governance processes

Successfully assume and operate services transitioning from shared corporate IT functions

Salary Range (Ontario & BC Only):

The estimated base salary range for this role is CAD$90,000.00 - CAD$110,000.00 per year. We include salary ranges in job postings only where required by applicable pay transparency laws, based on the jurisdictions in which the role may be performed. The posted range is a good faith estimate and reflects factors that are subject to change. Final offer amounts may vary based on job-related factors, including work location, candidate experience and expertise, and other relevant considerations.We recognize the value and importance of diversity and inclusion in our communities and in the workplace. We celebrate diversity and one of our goals as an employer is to create an inclusive work environment for all employees. We are an equal opportunity employer and do not discriminate against any employee or applicant because of race, religion, sex, sexual orientation including gender identity or expression, pregnancy, national origin, age, marital status, veteran status, disability status, or any other category or characteristic protected by law.Applicants with disabilities who would like to require a reasonable accommodation related to any part of the application process may contact us at Perseus_HR@constellationhbs.com.#HB HO

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More about this job

Responsibilities

The Senior Systems Administrator will manage the Microsoft 365 environment, including identity and access management, endpoint security, and collaboration platforms. They will also oversee infrastructure modernization and ensure secure, scalable technology services across the organization.

Requirements

Candidates must have at least 7 years of IT infrastructure experience, with 5 years specifically in Microsoft 365 administration. Proficiency in Microsoft Entra ID, Intune, and security governance is essential for this role.

Skills

Microsoft 365
Microsoft Entra ID
Identity and Access Management
Microsoft Intune
Windows Autopilot
Exchange Online
SharePoint Online
Microsoft Teams
Conditional Access
Endpoint Management
Security Governance
Power Platform
Power BI
Infrastructure Administration
Troubleshooting

Visa sponsorship

Not detected in the job text

Keywords

Microsoft 365
Microsoft Entra ID
Intune
Windows Autopilot
Exchange Online
SharePoint Online
Teams
Power Platform
Power BI
Identity and Access Management
SSO
Conditional Access
MFA
Endpoint Management
Security Governance
SPF
DKIM
DMARC
Infrastructure Administration
Disaster Recovery
Business Continuity
SaaS
Palo Alto Networks
Cloud Administration
Azure
IT Infrastructure
Systems Administration
Compliance
Cybersecurity
Tenant Governance

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