Job Description

Job Title: Resident Engineer (Microsoft, AD & Infoblox DNS)
Location: Egypt - CFC
Employment Type: Full-Time


We are seeking an experienced Core Infrastructure Engineer with strong hands-on expertise in on-premises Microsoft technologies. The role focuses on designing, operating, optimizing, and securing enterprise infrastructure services including Active Directory, Exchange Server (On-Prem), SCCM, DPM/Backup solutions, and Infoblox DNS. The ideal candidate will play a key role in ensuring high availability, security compliance, automation, and disaster recovery readiness for mission-critical services.
Key Responsibilities
Active Directory & Identity ServicesPerform daily operations and health monitoring for Microsoft Active Directory to ensure stability, performance, and security. Design, implement, and optimize Active Directory architecture in enterprise environments. Manage updates, upgrades, and patching of Domain Controllers and related AD components. Monitor and troubleshoot AD replication, DNS integration, authentication, and Group Policy issues. Enforce security policies using Group Policy Objects (GPOs), access controls, auditing, and logging. Apply CIS (Center for Internet Security) benchmarks and hardening standards to enhance AD security posture. Integrate Active Directory with other enterprise systems to ensure seamless identity synchronization and authentication. Develop and maintain PowerShell automation scripts for user provisioning, group management, and access control.

Microsoft Core InfrastructureArchitect and manage on-prem Microsoft infrastructure solutions aligned with Microsoft best practices. Administer and support Exchange Server (On-Prem), including configuration, maintenance, and troubleshooting. Manage Microsoft Endpoint Configuration Manager (SCCM) for OS deployment, patching, and application delivery. Support system backup and recovery solutions such as DPM or equivalent enterprise backup platforms. Perform infrastructure health checks, performance tuning, and security hardening. Provide advanced (L3) support and troubleshooting for complex infrastructure issues.

Disaster Recovery & Business ContinuityDesign, maintain, and support Disaster Recovery (DR) and High Availability (HA) strategies for core infrastructure services. Perform regular DR testing and coordinate with headquarters to ensure failover readiness. Ensure backup, restore, and recovery procedures are documented, tested, and validated.

Infoblox DNS AdministrationAdminister and maintain Infoblox DNS/DDI infrastructure ensuring high availability, performance, and security. Manage DNS records, zones, and subdomains across internal and external environments. Conduct regular health checks and performance monitoring using Infoblox dashboards and reporting tools. Implement DNS security features such as DNSSEC, RPZ (Response Policy Zones), and threat intelligence feeds. Troubleshoot DNS resolution issues, latency, and propagation delays across distributed environments. Monitor DNS query traffic and analyze logs to detect anomalies, misconfigurations, or potential threats. Support DNS backup, restore, and disaster recovery planning and validate failover scenarios. Coordinate with network and security teams to align DNS architecture with enterprise standards.

Documentation & CollaborationDevelop and maintain technical documentation, architecture diagrams, and operational runbooks. Collaborate with internal IT, network, and security teams to align infrastructure operations with organizational standards. Contribute to infrastructure roadmaps, audits, and continuous improvement initiatives.

Requirements5+ years of hands-on experience with Microsoft infrastructure technologies in enterprise environments. Strong expertise in Active Directory, Group Policy, DNS, DHCP, and Windows Server administration. Deep understanding of Exchange Server (On-Prem) architecture and operations. Proven experience with SCCM / Microsoft Endpoint Configuration Manager. Solid understanding of networking fundamentals and infrastructure security. Experience with high availability, disaster recovery planning, and enterprise backup solutions. Strong problem-solving, analytical, and documentation skills.

Preferred QualificationsMicrosoft certifications such as Windows Server Hybrid Administrator Associate, MCSA, or MCSE. Hands-on experience with Infoblox DDI platforms. Strong PowerShell scripting and automation skills. Experience with virtualization platforms (VMware, Hyper-V). Exposure to hybrid identity and infrastructure scenarios (Azure AD Connect, Azure Arc). * Strong communication skills and ability to work effectively in cross-functional teams.