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https://bayt.page.link/ZcX3cT5XhCP1hhMn9
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Senior System & Network Administrator

30+ days ago 2026/03/25
Other Business Support Services
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Job description

General Overview:We are looking for a highly skilled and proactive Senior System & Network Administrator for our client, a reputable organization in the UAE. The ideal candidate must bring strong, hands-on expertise in managing complex IT infrastructures, advanced network environments, cybersecurity tools, and enterprise-level systems.
This role focuses heavily on network administration, firewall management, system security, server infrastructure, and high-availability environments. You will play a critical part in ensuring the stability, resilience, and security of the organization’s IT landscape.
Key Responsibilities:
Network & Infrastructure Management
  • Design, manage, and optimize core IT network infrastructure including LAN/WAN, VLAN segmentation, Wi-Fi networks, routing, and switching.
  • Configure, administer, and troubleshoot SonicWall firewalls (SSL & Site-to-Site VPNs, NAT, content filtering, IPS/IDS).
  • Perform network security hardening, performance tuning, firmware upgrades, and real-time monitoring of traffic and devices.
  • Implement, test, and maintain backup, failover, and disaster recovery strategies to ensure business continuity.
  • Maintain comprehensive network documentation including IP addressing, topology diagrams, and configuration records.
System Administration & Security
  • Administer and support Windows Server environments (AD, DNS, DHCP, GPO, file services).
  • Manage NAS storage systems, ensuring optimized performance, high availability, and secure access.
  • Oversee endpoint protection through Trend Micro Apex One, ensuring robust malware defense, policy enforcement, and compliance.
  • Monitor, analyze, and enhance system and network security, proactively identifying risks and vulnerabilities.
Support & IT Operations
  • Provide advanced (Level 2/3) technical support for system, network, and security-related issues.
  • Handle service requests and incidents through an IT ticketing system, ensuring SLA compliance.
  • Conduct IT asset management including hardware lifecycle, software licenses, and inventory control.
  • Collaborate with vendors, service providers, and cross-functional teams for IT upgrades, deployments, and projects.
  • Lead and participate in infrastructure enhancement initiatives assigned by management.
Key Requirements:
  • Bachelor’s degree in computer science, Information Technology, or a related field.
  • 4–6 years of strong, hands-on experience in system and network administration within enterprise environments.
  • Deep expertise in:
  • SonicWall firewalls & VPN technologies (SSL & Site-to-Site)
  • Windows Server administration & domain services
  • NAS storage systems and data access controls
  • Trend Micro Apex One and Email Gateway security
  • Networking protocols: TCP/IP, VLANs, DNS, DHCP, routing, switching
  • IT support operations and ticketing systems
  • Preferred certifications: CCNA, Network+, MCSA, Security+, or equivalent industry credentials.
Key Competencies:
  • Strong problem-solving and analytical abilities with a security-first mindset.
  • Excellent communication and stakeholder management skills.
  • Ability to work independently, manage priorities, and perform under pressure.
  • Proactive, detail-oriented, and committed to maintaining high system availability and security standards.
Desirable Skills:
  • Knowledge of ITIL framework and service desk operations.
  • Experience with scripting/automation (PowerShell, Bash).
  • Exposure to Microsoft 365, Azure, or cloud infrastructure solutions.

This job post has been translated by AI and may contain minor differences or errors.
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