Senior Cloud, Network & Security Engineer

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