About the role:

We are seeking a highly capable Senior Infrastructure & Security Engineer to join our growing technology team.

This role is ideal for a hands-on infrastructure and security professional with strong experience across enterprise networking, Microsoft cloud security, security operations, and incident response.

You will play a key role in securing and supporting the organisation’s infrastructure across on-premise and cloud environments, ensuring high availability, resilience, and strong cybersecurity controls across critical business systems.

Key Responsibilities

• Design, implement and maintain LAN/WAN infrastructure, routing, switching, VPN, and network connectivity

• Administer and optimise enterprise firewalls, network security controls, and secure remote access solutions

• Manage and secure Microsoft Azure and Microsoft 365 environments

• Administer Microsoft Entra ID, including Conditional Access, MFA, Privileged Identity Management (PIM), and Identity Governance

• Manage and optimise Microsoft Defender XDR, including Defender for Endpoint, Defender for Office 365, Defender for Identity, and Defender for Cloud

• Configure and maintain security monitoring and threat detection capabilities using Microsoft Sentinel

• Conduct proactive threat hunting, vulnerability assessments, and remediation tracking

• Lead security incident investigation, containment, remediation, and root cause analysis

• Monitor infrastructure and network performance and implement optimisation initiatives to improve uptime and resilience

• Provide Tier 2 / Tier 3 support for complex infrastructure, network, and security-related incidents

• Collaborate with infrastructure, application, and business teams to improve overall security posture

Requirements

• Bachelor’s Degree in Information Security, Cybersecurity, Computer Science, Information Technology, or related field

• Minimum 8 years of experience across infrastructure, network engineering, and cybersecurity

• Minimum 3 years of hands-on experience with Microsoft Azure and Microsoft 365 security

• Strong hands-on experience in:

• LAN / WAN / Routing / Switching

• Firewalls (Fortinet / Cisco / Palo Alto preferred)

• Microsoft Azure Security

• Microsoft Entra ID

• Microsoft Defender XDR

• Microsoft Sentinel

• Threat Detection & Incident Response

• Vulnerability Management

• Strong understanding of Zero Trust architecture, cloud security, identity management, and security operations

• Experience with infrastructure monitoring, security audits, and compliance initiatives

• Strong troubleshooting, analytical, and problem-solving skills

• Strong PowerShell scripting / automation skills preferred

Preferred Certifications

• Microsoft Certified: Cybersecurity Architect Expert

• Microsoft Certified: Security Operations Analyst Associate

• AZ-500

• CISSP / CISM / CCSP

• CCNP Security / Fortinet certifications (advantage)