System Administrator Job Muscat area,Oman,IT/Tech

Position: System Administrator at Green Umbrella Recruitment

Apply for System Administrator at Green Umbrella Recruitment in Muscat, MA, OM. This Full time on site position offers great opportunities for career growth.

Job Information Job Opening Date Opened 04/07/2026 Job Type Full time Work Experience 3+ Job Opening Status Open Industry IT Services Degree Bachelor's Job Role IT City Muscat State/Province Masqat Country Sultanate of Oman Zip/Postal Code 0000

1. Active Directory (AD) Manage and maintain Active Directory (AD) infrastructure, including creating and managing users, groups, and organizational units (OUs). Configure and enforce Group Policies (GPOs) to ensure security and compliance. Implement and maintain AD roles, including DNS, DHCP, and Certificate Services. Monitor replication and resolve AD synchronization issues between domain controllers. Perform periodic audits of AD permissions, accounts, and roles to ensure compliance.

Plan and execute domain migrations or integrations during organizational changes.

2. Exchange Server Install, configure, and manage Microsoft Exchange Server environments. Monitor email flow, queues, and mailbox databases for performance and health. Configure and manage email security policies, spam filters, and data loss prevention (DLP). Perform Exchange migrations, including on-premises to Office 365 or hybrid setups. Manage email archiving, retention policies, and compliance requirements. Troubleshoot issues related to mail delivery, access, or synchronization across devices.

3. Virtualization Deploy and manage virtualization platforms, such as VMware vSphere, Microsoft Hyper‘-V, Nutanix AHV and OLVM. Monitor and optimize the performance of virtual machines (VMs) and hosts. Create and manage virtual networks, storage, and resource pools. Perform VM backups and recoveries, ensuring business continuity. Implement high‘-availability and disaster recovery solutions for virtualized environments. Plan and execute upgrades of hypervisors and virtual infrastructure.

4. Linux Administration Install, configure, and maintain Linux servers (e.g., Oracle Linux, Ubuntu, Red Hat). Manage user accounts, permissions, and secure access using SSH or PAM. Monitor Linux system performance. Configure and manage Linux‘-based services, such as web servers (Apache), databases, and DNS. Apply patches, updates, and security hardening.

5. Backup Administration Configure and manage enterprise backup solutions (Veeam). Develop and maintain backup policies. Ensure backups are tested regularly for recoverability and compliance with RTO/RPO. Manage tape backups, offsite storage, and replication to disaster recovery sites. Integrate database‘specific backup tools like Oracle RMAN. Monitor backup jobs and troubleshoot failures or performance bottlenecks.

6. Storage Management Manage and monitor SAN/NAS/VSAN storage systems and ensure optimal performance. Configure RAID levels (e.g., RAID 1, RAID
5) for redundancy and performance. Allocate and manage storage volumes and LUNs for server and application needs. Monitor storage capacity and plan for future expansions. Implement data deduplication, compression, and replication where applicable.

7. Monitoring Deploy and manage monitoring tools, such as Manage Engine tools. Configure alerts and notifications for critical system, network, or application metrics. Monitor CPU, memory, disk usage, and network performance for anomalies. Analyze logs to identify trends, potential issues, or security breaches. Generate and distribute reports on system health, performance, and capacity planning. Automate monitoring tasks using scripts.

Qualifications and Skills:

1. Educational

Qualifications:

+ Bachelor‘s degree in Computer Science, Information Technology, or a related field.

2.

Work Experience:

+ At least 3…