Senior Cloud Network And Security Engineer

alkalma Wellbeing Centers; Abu Dhabi; On-site; AED 320,000 - 480,000; Full time

Job summary

alkalma Wellbeing Centers in Abu Dhabi seeks an experienced IT Infrastructure & Security professional to implement, manage, and secure the organisation’s multi-cloud and on-premises network. You will handle firewalls, switches, Wi‑Fi, NAC, telephony, and security audits across Azure, AWS, Alibaba, and Tencent clouds.

The role requires hands-on experience with HPE Aruba, Fortinet, and Cisco Meraki, plus NAC deployment and strong Azure security expertise.

Qualifications

• 5–8 years of relevant experience spanning network infrastructure, network security, and cloud security.
• Hands-on experience with HPE Aruba, Fortinet, and Cisco, including switching, firewalls, and enterprise Wi-Fi.
• Practical experience implementing, administering, and troubleshooting NAC solutions.
• Strong Azure security expertise and practical experience securing additional cloud platforms.
• Working knowledge of IP telephony, VoIP, SIP, and voice-network troubleshooting.

Responsibilities

• Manage HPE Aruba, Fortinet, and Cisco Meraki infrastructure, including switching, enterprise Wi‑Fi, and FortiGate firewalls.
• Maintain routing, VLANs, VPNs, SD-WAN, and high availability; troubleshoot connectivity and performance issues.
• Implement, administer, and troubleshoot Aruba ClearPass NAC (802.1X, RADIUS, TACACS+).
• Support IP telephony, VoIP, and centralised call centre infrastructure, including PBX connectivity and QoS.
• Coordinate with SOC on monitoring coverage, incident investigation, response and remediation.

Skills

Network security

Cloud security

NAC deployment

Azure security

SOC coordination

Firewall management

PowerShell

Python scripting

Tools

HPE Aruba

Fortinet

Cisco Meraki

Job description

Job Description:

Experience: 5–8 years of relevant experience

Reports to: IT Infrastructure & Security Manager

Role Overview

Responsible for implementing, managing, securing, and troubleshooting the organisation's network and multi-cloud infrastructure across all sites. The role covers firewalls, switching, Wi-Fi, telephony, cloud security, and NAC, alongside SOC coordination and support for security audits.

Key Responsibilities

• Manage HPE Aruba, Fortinet, and Cisco Meraki infrastructure, including switching, enterprise Wi-Fi, and physical and cloud-hosted FortiGate firewalls.
• Maintain routing, VLANs, network segmentation, VPNs, SD-WAN, and high availability; troubleshoot connectivity, wireless coverage, roaming, and performance issues.
• Implement, administer, and troubleshoot Aruba ClearPass NAC, including 802.1X, RADIUS/TACACS+, device profiling, guest access, certificate-based authentication, and access enforcement.
• Support IP telephony, VoIP, and centralised call centre infrastructure, including PBX connectivity, SIP trunks, call routing, QoS, and call-quality troubleshooting.
• Secure workloads and applications across Azure, AWS, Alibaba Cloud, and Tencent Cloud, covering network protection, encryption, logging, web application firewalls, DDoS protection, and secure application publishing.
• Administer identity and privileged access controls, including Microsoft Entra ID, MFA, Conditional Access, and PAM solutions such as Wallix.
• Support Microsoft Defender and Intune security controls and their integration with NAC and security monitoring.
• Coordinate with the SOC on monitoring coverage, incident investigation, response, and remediation; review service effectiveness.
• Conduct security configuration reviews, coordinate vulnerability assessments and penetration testing, and track remediation and retesting.
• Support Windows/Linux hardening and core infrastructure services, including Active Directory, DNS, DHCP, NTP, PKI, and TLS certificate management.
• Monitor infrastructure availability and capacity; manage firmware updates, configuration backups, and changes with appropriate testing and rollback plans.
• Support backup security, restoration testing, infrastructure failover, and disaster recovery planning.
• Automate routine administration and security checks using PowerShell, Python, or infrastructure-as-code tools.
• Maintain network diagrams, operating procedures, asset and licence inventories; coordinate vendor support, escalations, and renewals.
• Support audits against applicable ADHICS, DoH, and DHA requirements, including evidence preparation, control validation, and closure of findings.

Candidate Requirements

• 5–8 years of relevant experience spanning network infrastructure, network security, and cloud security.
• Hands-on experience with HPE, Fortinet, and Cisco, including switching, firewalls, and enterprise Wi-Fi.
• Practical experience implementing, administering, and troubleshooting NAC solutions.
• Strong Azure security expertise and practical experience securing additional cloud platforms.
• Working knowledge of IP telephony, VoIP, SIP, and voice-network troubleshooting.
• Experience with SOC coordination, incident response, vulnerability management, and security audit support.
• Relevant HPE, Aruba, Fortinet, Cisco, or cloud security certifications preferred; healthcare-sector experience is an advantage.
• Healthcare-sector experience is an advantage