Qureos

FIND_THE_RIGHTJOB.

Senior System Administrator

Ibra', Oman

  • Information Technology Services
  • Friday Oct 03, 2025

Job Function

The Senior System Administrator is responsible for the installation, configuration, operation, security, and maintenance of the organization’s systems, servers, storages and related infrastructure. The role ensures high levels of availability, performance, and security across enterprise IT environments, supporting both users and University objectives.

Responsibilities

System Administrator performs a wide range of duties as mentioned below:

  • Install, configure, monitor, and maintain Active Directory (AD), DNS, and DHCP environments for the enterprise.

2. Administer Active Directory domains, including replication, sites/services, and DNS functionality.

3. Manage Group Policies (GPOs) for system security, compliance, and optimization

4. Develop and maintain basic to intermediate PowerShell scripts for automation and administration tasks.

5. Manage, Monitor and Provide technical support for Microsoft Exchange, Office 365, and hybrid email environments, including configuration, testing, and client support.

6. Implement, configure, and maintain VMware virtual infrastructure, including vCenter and ESXi hosts.

7. Manage and Monitor Servers, Storages, system backups, replication, and recovery using Veeam Backup & Replication.

8. Install, configure, and maintain Windows and Linux servers to ensure availability and reliability.

9. Coordinate with vendors to implement and manage Annual Maintenance Contracts (AMCs).

10. Perform daily monitoring of the Disaster Recovery (DR) environment and ensure the successful execution of the annual DR test.

11. Monitor, review, and analyze system events and logs, taking corrective actions as required.

12. Plan and perform system upgrades and patch management to enhance functionality, performance, and security.

13. Coordinate and perform software and application installation, testing, and upgrades across systems.

14. Monitor systems daily and respond immediately to security, performance, or usability issues.

16. Provide technical support for both hardware and software issues for end users.

17. Respond to, resolve, and document helpdesk tickets and support requests in line with SLAs.

18. Assist in IT projects, including infrastructure upgrades, migrations, and expansion.

19. Apart from this any other duties and responsibilities related to your job / position can be added in the future by the line manager.

Experience

  • Minimum 6 years’ experience as a System Administrator.
  • Strong background in Active Directory, Domain Controllers, Exchange servers and Office 365 administration.


Technical Skills:

  • Advanced knowledge of Windows Server and Linux OS administration.
  • Proficiency in VMware virtualization and Veeam backup/replication solutions.
  • Experience in exchange servers and Office 365 administration and hybrid configurations.
  • Familiarity with PowerShell scripting for automation.
  • Strong troubleshooting and incident resolution capabilities.
  • Knowledge of IT security best practices (patching, hardening, access control, etc.).

Skills

  • Strong analytical, problem-solving, and decision-making skills.
  • Ability to prioritize tasks and deliver results under pressure.
  • Excellent communication skills in English (required) and Arabic (preferred).
  • Team player with the ability to train and guide junior staff.

Commitment to continuous learning and professional development.

Qualification

  • Bachelor’s degree in information technology, Computer Science, or a related field from an accredited institution.

Professional certifications (e.g., MCSE, MCSA, VMware VCP, Veeam, Office365) are preferred.

Job Overview

  • Job nature : Full Time
  • Posted date : Thursday Sep 18, 2025
  • Closing date : Friday Oct 03, 2025

Contact Information

© 2025 Qureos. All rights reserved.