Mattamy Homes

Senior Security & Compliance Administrator

Mattamy Homes • $70K — $110K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • College Diploma or University Degree in Information Systems, Computer Science, Cybersecurity, or a related discipline.
  • 5+ years of hands-on IT security and compliance administration experience across multiple sites and technologies.
  • Proficiency with SIEM (e.g., Microsoft Sentinel) and endpoint detection and response tools (e.g., Microsoft Defender).
  • Experience with Microsoft 365/Azure security tools, including Conditional Access, Purview, and Intune.
  • Working knowledge of NIST CSF and IT general controls (ITGCs), with experience supporting external audits.
  • Solid networking/firewall fundamentals, ideally with Fortinet, in corporate and OT environments.
  • Strong documentation habits and the ability to communicate effectively with non-technical stakeholders.

Responsibilities

  • Lead SAMI's security and compliance program across IT and OT environments.
  • Administer and monitor SAMI's security suite and manage incident response.
  • Oversee security controls in SAMI's hybrid AD/Entra environment including MFA and Intune.
  • Run vulnerability management processes for servers, endpoints, and networks.
  • Audit network security controls for IT/OT environments.
  • Manage data protection and disaster recovery operations.
  • Coordinate with external auditors and lead internal audit readiness.

Benefits

  • Opportunity to own security posture from day one in a fast-growing start-up.
  • Hands-on role at the intersection of cybersecurity, robotics, and manufacturing.
  • Participation in an annual bonus program based on business and individual performance.
  • Support for professional development and growth in security and compliance.
  • Engagement with emerging AI and automation technologies.
Full Job Description
Role:

Senior Security and Compliance Administrator

Location:

Etobicoke & Mississauga, Ontario

Company:

Stelumar Advanced Manufacturing Inc.

Department:

Information Technology

Employment Type:

Full-Time, Permanent

Reports to:

Senior IT Manager

What we offer

This is a hands-on role at a fast-growing Canadian start-up using robotics, automation, and AI to take on the housing crisis. As our Senior Security and Compliance Administrator, you'll own the security posture and compliance program protecting SAMI's Greater Toronto Area manufacturing and corporate sites, from identity, endpoint, and network security to audits and the IT/OT security boundary. You'll have real ownership from day one and work at the leading edge of where cybersecurity meets the factory floor. We're looking for someone rigorous and dependable, with sharp risk judgment and the confidence to act on it.

What you'll do
  • Lead SAMI's security and compliance program across IT and OT environments, spanning Cabinetry, Panel, Modular, and Stelumar Communities.
  • Administer and monitor SAMI's security suite (Sentinel SIEM, Defender for IoT/Endpoint/O365), and lead incident response end-to-end, from triage in the ITSM platform through resolution.
  • Manage security controls across SAMI's hybrid AD/Entra environment, including Conditional Access, MFA, privileged access, Purview, and Intune compliance policies.
  • Run vulnerability management end-to-end: scanning, patch compliance, and remediation tracking across servers, endpoints, and network infrastructure.
  • Administer and audit Fortinet network security controls and the IT/OT network security boundary for PLC environments.
  • Oversee SAMI's data protection and backup verification program (Cohesity, SQL Server Always On AGs) and support Tier 2 DR/BCP delivery.
  • Manage the day-to-day relationship and audit cycle with SAMI's external auditors, including PwC, coordinating evidence, walkthroughs, and control testing; lead internal audit readiness and track findings to close.
  • Administer security aspects of SAMI's ERP (Odoo) and MES-connected systems, including access reviews and segregation of duties.
  • Run security awareness training and phishing simulations, and support security review of new SaaS tools and vendors.
  • Support secure deployment of AI and automation tools in partnership with IT leadership.
  • Other duties as assigned.


What you bring
  • College Diploma or University Degree in Information Systems, Computer Science, Cybersecurity, or a related discipline.
  • 5+ years of hands-on IT security and compliance administration experience across multiple sites and technologies.
  • Demonstrated proficiency with SIEM (e.g., Microsoft Sentinel) and endpoint detection and response tools (e.g., Microsoft Defender).
  • Hands-on experience with Microsoft 365/Azure security and compliance tooling, including Conditional Access, Purview, and Intune compliance policies.
  • Working knowledge of NIST CSF and IT general controls (ITGCs), with hands-on experience supporting external audits and evidence requests.
  • Solid networking/firewall fundamentals, ideally with Fortinet, across corporate and OT environments.
  • Strong documentation habits, organization, and discretion handling sensitive security and compliance matters.
  • Clear communicator who can explain risk and controls to non-technical stakeholders, auditors, and plant teams.


Bonus Points
  • Industry certification such as Security+, SC-200, SC-300, SC-401, or CISSP (or working toward one).
  • Prior experience as the auditee contact for PwC or another Big Four/national audit firm, or audit-side experience (SOC 2, ISO 27001).
  • Hands-on exposure to OT/PLC network security in a manufacturing or industrial setting.
  • Experience with FreshService, SolarWinds, or comparable ITSM and monitoring platforms.


Compensation

The expected base salary range for this position is $70,000 - $110,000. Actual pay may vary depending on your job-related knowledge, competencies, and skills. We recognize that exceptional situations may fall outside this range, and we encourage all interested candidates to apply.

You are also eligible to participate in Stelumar's annual bonus program which gives you the opportunity to increase your total compensation if business and individual goals are achieved.

We encourage applicants who meet most of the role requirements to hit that submit button and apply! It's okay if you don't have 100% of the requirements. If you're the right candidate, we'll help you learn and grow.

About Mattamy Homes

Mattamy Homes is the largest privately owned homebuilder in North America, with operations across Canada and the United States. The company was founded in 1978 by Peter Gilgan, and has built over 100,000 homes in hundreds of communities. Mattamy Homes is known for its innovative home designs, attention to detail, and commitment to customer satisfaction. The company offers a wide range of homes, from affordable townhomes to luxury estates, and has won numerous awards for its quality and design. Mattamy Homes is headquartered in Oakville, Ontario, and has regional offices in Calgary, Edmonton, and Vancouver in Canada, and in Phoenix, Tucson, Jacksonville, Orlando, Charlotte, Raleigh, and Minneapolis in the United States.
Learn more about Mattamy Homes
Size
2,000 employees
Industry
Net Income
$100 million
Founded
1978
5 Year Trend
+10%
Revenue
$2 billion

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