Level 3 Service Desk Engineer

Senior Level 3 Service Desk Engineer to act as the primary escalation point for complex Windows Server, infrastructure, networking, and application incidents across a diverse client portfolio. This role is desk-based with occasional onsite visits in Sydney, supports and maintains Microsoft Server environments, Active Directory, DNS, DHCP, VPNs, and virtualization; performs server builds, migrations, upgrades, and client onboarding; manages firewall and network infrastructure; delivers primarily remote support with after-hours on-call; mentors Level 1 and 2 engineers; collaborates with vendors and internal teams to drive timely resolution and continuous improvement; focuses on documented client communication, ticket management, and project contributions including server builds and onboarding new client environments; requires 5+ years’ senior IT experience, strong communication, and ability to work directly with clients.