Network Security Engineer

Kaliba; City of Melbourne; On-site; AUD 120,000 - 180,000; Full time

Job summary

Kaliba is seeking a Senior Network Security Engineer (Level 3) for Melbourne-based managed services. You will be the top technical escalation point for the Network, Security & Cyber team, handling the toughest tickets, leading major incident responses and coaching junior engineers.

You will design, implement and troubleshoot Fortinet and Palo Alto environments, manage SD-WAN, plan changes with rollback options, and contribute to runbooks and automation while ensuring ITIL-aligned practices and

Qualifications

• 6+ years in network and security engineering with senior escalation experience.
• Fortinet experience with NSE 4 minimum; NSE 5/6/7 valued.
• Palo Alto firewalls and Panorama knowledge encouraged.
• Enterprise routing and switching knowledge (BGP, OSPF, VLANs, HA).
• Proven ability to resolve complex multi-vendor faults and perform RCAs.
• ITIL-aligned discipline for tickets, changes and problems.

Responsibilities

• Escalate and act as top technical point for L1/L2 incidents and changes.
• Lead P1/P2 major incidents, perform root cause analyses and write customer reports.
• Design, configure and troubleshoot firewall policies across Fortinet and Palo Alto.
• Plan changes with rollback plans and coordinate after-hours windows.
• Mentor L2 engineers and contribute to runbooks and automation.

Skills

L3 escalation

Fortinet NSE 4

Palo Alto Firewalls

VPN

Incident response

SLA/ITIL

On-call support

Tools

FortiGate

FortiManager

FortiAnalyzer

FortiSwitch

FortiAP

Panorama

Job description

Senior Network Security Engineer (Level 3) - Managed Services

Our client, a Melbourne-based managed services provider, is hiring a Level 3 Network & Security Engineer to be the top technical escalation point for its Network, Security & Cyber team. You'll take the toughest tickets, lead major incident response and coach the engineers coming up behind you.

What you'll do

• Act as the escalation point for L1/L2 engineers across incidents, service requests and changes
• Lead the technical response on P1/P2 major incidents, then own root cause analysis and deliver the customer-facing write-up
• Resolve complex, cross-domain and multi-vendor faults end to end
• Design, configure and troubleshoot firewall and routing policy across Palo Alto and Fortinet environments, including SD-WAN
• Plan and deliver changes with rollback plans, including after-hours windows, upgrades and migrations
• Pass chronic, recurring faults to the technical lead for formal problem management
• Mentor L2 engineers and contribute runbooks, knowledge articles and automation

What you'll bring

• 6+ years in network and security engineering, including 2+ years at L3 or senior escalation level within an MSP or MSSP
• Deep, hands-on Fortinet experience: FortiGate, FortiSwitch, FortiAP, Fortinet Secure SD-WAN, FortiManager and FortiAnalyzer. NSE 4 minimum; NSE 5/6/7 highly regarded
• Palo Alto Networks firewalls and Panorama: security policy, App-ID/User-ID, NAT, VPN, threat prevention. PCNSA/PCNSE highly regarded
• Enterprise routing and switching: BGP, OSPF, VLANs, STP, HA/clustering, QoS, IPSec and remote-access VPN
• A track record of independently resolving complex multi-vendor faults, with RCAs that hold up under customer scrutiny
• ITIL-aligned discipline across tickets, change and problem management, with comfort working to measured SLA and quality targets
• Australian work rights, and availability for on-call, after-hours work and customer site visits