Full-time

Active Directory Support Engineer

Posted by Astra North Infoteck Inc. • Toronto, ON, Canada

📍 Toronto, ON 🕒 June 03, 2026

About the Role

Job Summary We are seeking an experienced Active Directory Support Engineer to support and maintain enterprise-level AD infrastructure. The ideal candidate will have strong expertise in AD operations, security hardening, troubleshooting, and automation, along with the ability to work in a fast-paced, production environment. Key Responsibilities Security Hardening: Implement and enforce Active Directory security best practices, including securing LDAP channels, disabling legacy protocols (e.g., NTLM), and managing privileged accounts. Migration & Upgrades: Lead and support AD migrations, functional level upgrades, domain consolidations, and Windows Server upgrades. AD Health Monitoring: Monitor domain controllers, replication processes, and DNS integration to ensure high availability and prevent outages. Production Changes: Execute patches, promote domain controllers, and manage configuration updates under strict change control processes (often during nights/weekends). Troubleshooting: ...

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