Senior Network Security Engineer

Level 3 Network & Security Engineer | Managed Services

Overview

FinXL has partnered with a leading Australian based IT engineering company that specialises in digital infrastructure, including network, security, and cloud solutions designed for mid to large scale organisations. We are seeking a Level 3 Network & Security Engineer on a permanent basis to join their Network, Security & Cyber Managed Services team.

About the Role

In this role, you will act as the senior technical escalation authority within the team. You will lead the resolution of complex multi-vendor architecture faults, manage P1 and P2 major incidents, and resolve chronic operational issues while mentoring Level 2 engineers. This position is Melbourne based and offers a hybrid working arrangement.

Key Responsibilities

• Serve as the senior technical escalation point for L2 engineers across incidents, service requests, and complex change activities.

• Lead technical response on P1 and P2 major incidents, own root cause analysis (RCA), and produce written documentation for customers.

• Resolve complex cross-domain faults end to end across multi-vendor network and security environments.

• Configure, optimise, and troubleshoot Palo Alto Networks and Fortinet estates, including Forti SD-WAN, Panorama, FortiManager, and FortiAnalyser.

• Plan and execute scheduled technical changes, upgrades, and migrations during maintenance windows with comprehensive rollback strategies.

• Partner with the Client Technical Lead to transition recurring faults into formal problem management workflows.

• Mentor L2 engineers and contribute to operational efficiency by creating runbooks, knowledge base articles, and automation routines.

Skills & Experience Required

• 8+ years of experience in network and security engineering, with at least 2 years operating at an L3 or senior escalation level within an MSP or MSSP environment.

• Deep hands-on experience with the Fortinet ecosystem: FortiGate, FortiSwitch, FortiAP wireless, Fortinet Secure SD-WAN, managed via FortiManager and FortiAnalyser (NSE 4 minimum; NSE 5/6/7 well regarded).

• Proven expertise in Palo Alto Networks firewalls and Panorama, including security policy, App-ID, User-ID, NAT, VPN, and Threat Prevention (PCNSA/PCNSE well regarded).

• Strong technical mastery of enterprise routing and switching protocols: BGP, OSPF, VLANs, STP, HA/clustering, QoS, IPSec, and remote-access VPN.

• Proven track record of independently resolving complex multi-vendor faults and delivering written RCAs that withstand customer scrutiny.

• Solid ITIL alignment with strong discipline across ticket, change, and problem management within strict SLA targets.

• Full Australian work rights, availability for rostered on-call and after-hours change work, and comfort with a hybrid working arrangement in Melbourne (Rowville, Southbank, and WFH).

If this opportunity sounds like a challenge you have been looking for, please apply online today. Please note, only shortlisted individuals will be contacted. (M10)