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.

Key Responsibilities

Identity & Directory Services

• Manage Microsoft 365 users, groups, roles, and licenses.
• Administer Azure Entra ID (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.

Federation & Access Management

• 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, OneDrive, and Copilot.
• Control guest access and cross-tenant collaboration.
• Enforce security and compliance policies across collaboration tools.
• Manage enterprise email signature solutions.

PKI, DNS & Infrastructure Services

• 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.

Application Integration & Security

• Integrate enterprise applications with AD and Entra ID.
• 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.

Requirements

Experience

• Strong experience with Microsoft 365, Azure Entra ID, 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.

Education & Certifications

• Bachelor’s degree in IT, Computer Science, or related field.
• Identity & Access Administrator Associate.

Technical Skills

• Active Directory (AD DS, AD CS, AD FS)
• Hybrid Identity & Directory Synchronization
• DNS & Domain Management
• PKI & Certificate Lifecycle Management

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