Systems Engineer - Enterprise Infrastructure Services Administrator

Black & Grey HR is recruiting for a leading technology solutions provider in Doha, Qatar. Our client is seeking an experienced Systems Engineer - Enterprise Infrastructure Services Administrator who will be responsible for managing enterprise identity, directory, and access management services across hybrid and multi‑cloud environments, ensuring secure, scalable, and compliant IAM operations across Microsoft 365, Azure, Active Directory, and enterprise collaboration platforms.

• Manage Microsoft 365 users, groups, roles, and licenses.
• Administer Azure Entra  (Azure AD), MFA, Conditional Access, and Identity Protection.
• Maintain on‑premises Active Directory (AD DS), GPOs, domains, and replication.
• Support Azure AD DS and hybrid identity environments.
• Manage Google Directory Services in hybrid/federated setups.
• Design and support hybrid identity solutions.

• Configure AD FS, SAML, OAuth2, OpenID Connect, and federation services.
• Implement and manage Single Sign‑On (SSO) solutions.
• Manage RBAC, privileged access, and least‑privilege models.
• Support Privileged Identity Management (PIM) and JIT access.

• Manage Microsoft 365 licensing and utilization reporting.
• Administer access for Teams, SharePoint, One Drive, and Copilot.
• Control guest access and cross‑tenant collaboration.
• Enforce security and compliance policies across collaboration tools.
• Manage enterprise email signature solutions.

• Administer Active Directory Certificate Services (AD CS).
• Manage SSL/TLS certificates, renewals, and revocations.
• Manage internal/external DNS environments and domain services.
• Coordinate domain registrations and DNS configurations.
• Support cloud and hybrid infrastructure connectivity.

• Integrate enterprise applications with AD and Entra .
• Support LDAP, SAML, OAuth, and directory‑based integrations.
• Collaborate with security and application teams on IAM integrations.
• Support audits, compliance reviews, and risk assessments.
• Maintain technical documentation and SOPs.

• Strong experience with Microsoft 365, Azure Entra , and Active Directory.
• Hands‑on experience with hybrid identity and directory synchronization.
• Experience with SSO, federation, DNS, and PKI services.
• Knowledge of enterprise IAM integrations and security best practices.

• Bachelor’s degree in IT, Computer Science, or related field.
• Microsoft certifications preferred:
• Azure Administrator Associate
• Identity & Access Administrator Associate
• Microsoft 365 Enterprise Administrator

• Azure Entra  (Azure AD) & Microsoft 365
• Active Directory (AD DS, AD CS, AD FS)
• Hybrid Identity & Directory Synchronization
• DNS & Domain Management
• PKI & Certificate Lifecycle Management
• SSO, LDAP, SAML, OAuth & Federation

Competitive Salary + Benefits Package