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Systems Engineer - Enterprise Infrastructure Services Administrator

Job Description - 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.







Collaboration & Governance



- 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.



- Microsoft certifications preferred:



- Azure Administrator Associate



- Identity & Access Administrator Associate



- Microsoft 365 Enterprise Administrator







Technical Skills



- Azure Entra ID (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


Benefits



- Competitive Salary + Benefits Package



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