Senior System Engineer

About the role

We are looking for a Senior Systems Engineer to own and evolve our Microsoft identity and messaging infrastructure. You will administer Active Directory, ADFS, Microsoft Entra ID, Exchange and DNS, keeping these systems secure, stable and well documented. You will work closely with the security, network and helpdesk teams to resolve complex authentication and connectivity issues and deliver upgrades and migrations.

Key responsibilities

• Administer, maintain and optimize Active Directory, including OU structure, GPOs, replication and site topology.
• Manage ADFS for federated authentication and SSO, and Microsoft Entra ID for conditional access and hybrid identity (Entra Connect).
• Manage Exchange Server / Exchange Online, including mailboxes, mail flow, transport rules and distribution groups.
• Administer and troubleshoot internal and external DNS.
• Monitor the health, performance and security of AD and identity infrastructure.
• Plan and execute upgrades, migrations and patching across AD, ADFS, Exchange and related systems.
• Troubleshoot complex authentication, identity and connectivity issues.
• Maintain infrastructure documentation and runbooks, collaborate with security, network and helpdesk teams, and join the on‑call rotation as needed.

Required profile

• 8+ years of experience in systems engineering or infrastructure administration.
• Bachelor’s degree.
• Microsoft Certified: Azure Administrator.
• Native Arabic and advanced English communication.

Required skills

• Active Directory
• ADFS (claims rules, trust configuration)
• Microsoft Entra ID / Azure AD
• Exchange Server and/or Exchange Online
• DNS
• Windows Server administration
• PowerShell scripting for automation
• Strong troubleshooting skills