Open to opportunities

Ali Mrehach

@alimrehach

Cybersecurity consultant and admin. usign technologies to imrpve the level of services. I also teach IT and cyber security for more than 10 years.

Canada

Message

What I'm looking for

I seek roles where I can lead security operations or advisory work, improve enterprise security posture, mentor teams, and use Microsoft security technologies to drive measurable risk reduction.

I am a cybersecurity consultant with over 20 years of progressive IT experience, focused on cybersecurity operations, vulnerability management, identity and access control, and incident response support.

I have extensive hands-on experience with Microsoft security technologies including Microsoft Defender, Azure AD (Entra ID), and Microsoft Sentinel, and I lead assessments, remediation planning, and SIEM monitoring for enterprise clients.

I combine technical expertise with client consulting and training experience, delivering practical security improvements, mentoring teams, and translating complex threats into actionable remediation and policy guidance.

Experience

Work history, roles, and key accomplishments

Current

Senior System Administrator

Current

Insight Canada

Jan 2022 - Present (4 years 1 month)

Led cybersecurity improvement initiatives for enterprise clients, performing vulnerability assessments and secure configuration reviews across Azure AD, Microsoft 365, and on-prem Active Directory while administering Microsoft Defender and Sentinel for alert triage and incident investigations.

Microsoft Defender Azure Sentinel Vulnerability Assessment Incident Response PowerShell Security Advisory

Current

Cybersecurity Instructor

Current

CDI College

Dec 2020 - Present (5 years 2 months)

Delivered applied cybersecurity training and hands-on labs for SOC analysts and incident responders, developing real-world attack and remediation scenarios and mentoring learners in security best practices.

Curriculum Development SOC Incident Response Mentoring Risk Assessment

Cyber Security Expert Tutor

TripleTen

Oct 2024 - Oct 2025 (1 year)

Delivered practical cybersecurity training and designed simulated attack/defense scenarios in Windows and Linux environments to mentor professionals transitioning into SOC and consultant roles.

Network Security Vulnerability Management Incident Response Mentoring

Senior Systems Support Professional

Jolera

Dec 2020 - Jan 2022 (1 year 1 month)

Supported incident response and SOC operations by conducting log reviews, IOC investigations, remediation validation, and vulnerability assessments to improve defensive security and escalation processes.

Incident Response Log Analysis Vulnerability Assessment SOC Support Remediation Validation Documentation