Senior Cloud, Network & Security Engineer

5–8 years of relevant experience

IT Infrastructure & Security Manager

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.

• Manage HPE Aruba, Fortinet, and Cisco Meraki infrastructure, including switching, enterprise Wi‑Fi, and physical and cloud‑hosted Forti Gate 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 Clear Pass 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 , 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 Power Shell, 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.

• 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