Tower Lead - Cyber Security / Windows Defender || Calgary, AB - Onsite || Fulltime FTE

Tower Lead Cyber Security / Windows Defender

Location: Calgary, AB
Work Arrangement: Onsite
Job Type: Contract / Full-Time

Job Summary

We are seeking an experienced Cyber Security Tower Lead / Windows Defender Architect to lead enterprise security operations and endpoint protection initiatives. The ideal candidate will have expert-level knowledge of Microsoft Windows Defender and strong experience leading cybersecurity tool towers in complex enterprise environments.

Key Responsibilities

• Lead the Cyber Security Tools Tower and provide technical leadership for endpoint security initiatives.

• Act as the Windows Defender Architect / SME , providing expert guidance on Microsoft Defender solutions.

• Design, implement, and optimize Windows Defender security solutions across enterprise environments.

• Lead security tool strategy, architecture, deployment, configuration, and ongoing optimization.

• Monitor and improve endpoint protection, threat detection, incident response, and security posture.

• Collaborate with Cyber Security, Infrastructure, Network, Cloud, and Operations teams.

• Provide technical leadership, troubleshooting, and resolution of complex security issues.

• Establish security standards, best practices, governance, and operational procedures.

• Lead security tool upgrades, migrations, integrations, and technology transformation initiatives.

• Mentor technical teams and provide expert-level guidance on Microsoft Defender technologies.

• Prepare technical documentation, architecture diagrams, operational procedures, and reports.

Required Skills & Qualifications

• 7+ years of experience in Cyber Security / Endpoint Security / Security Engineering.

• Expert-level experience with Microsoft Windows Defender / Microsoft Defender .

• Strong experience as a Windows Defender Architect / Technical Lead / SME .

• Proven experience leading a Cyber Security Tools Tower or similar security technology function.

• Strong understanding of endpoint protection, threat detection, EDR/XDR, and security monitoring.

• Experience with enterprise-scale security architecture, implementation, and troubleshooting.

• Strong leadership, stakeholder management, and communication skills.

• Ability to work onsite in Calgary, AB .

Preferred Certification

• Microsoft Defender / Windows Defender certification or relevant Microsoft Security certification is highly preferred.