Senior L3 Network Engineer | Data Centre & Security

Logicalis Australia; Sydney; On-site; AUD 180,000 - 260,000; Full time

Benefits offered by this job

Flexible working arrangements

Industry-leading training

Wellness program

Job summary

Logicalis Australia seeks a seasoned Network Engineer to join our Infrastructure Support Services team in Sydney or Melbourne. This Level 3 role focuses on escalating and resolving critical network incidents, leading root cause analyses, and improving large-scale data centre networks.

You will mentor L1/L2 teams, manage P1/P2 incidents, and drive automation, monitoring, and security across enterprise environments. Availability for 24x7 on-call is required.

Qualifications

• 10+ years of Network Engineering experience.
• Proven Level 3 escalation experience.
• Strong troubleshooting across switching, routing, firewalls and wireless.
• Experience supporting enterprise, managed services, critical infrastructure or data centre environments.
• Root cause analysis for P1/P2 incidents.
• ITIL service management practices.
• Excellent communication and stakeholder engagement skills.
• Mentoring L1/L2 support teams.
• Certifications: Cisco, Palo Alto, Fortinet or Juniper.
• Experience with hyperscale, cloud or data centre environments.
• Automation and scripting experience.
• NV1 Security Clearance (Nice to Have)
• Australian Citizenship (mandatory) / eligibility to obtain Government Security Clearance.

Responsibilities

• Act as the Level 3 escalation point for critical network incidents and technical issues.
• Lead troubleshooting, root cause analysis and permanent remediation activities.
• Support highly available data centre and enterprise network environments.
• Participate in a 24x7 on-call roster supporting Priority 1 and Priority 2 incidents.
• Perform network lifecycle management including patching, upgrades and technology refreshes.
• Drive operational excellence through automation, monitoring and service improvement initiatives.
• Work closely with vendors, internal support teams and project stakeholders.
• Maintain network security, resilience and performance across critical infrastructure platforms.
• Produce and maintain technical documentation, runbooks and operational procedures.

Skills

Network engineering

L3 escalation

Troubleshooting

P1/P2 incident management

ITIL

Stakeholder engagement

Mentoring L1/L2

Automation & scripting

Vendor collaboration

Tools

Cisco

Palo Alto

Fortinet

Juniper

FortiGate

Job description

Logicalis Australia seeks a seasoned Network Engineer to join our Infrastructure Support Services team in Sydney or Melbourne. This Level 3 role focuses on escalating and resolving critical network incidents, leading root cause analyses, and improving large-scale data centre networks.

You will mentor L1/L2 teams, manage P1/P2 incidents, and drive automation, monitoring, and security across enterprise environments. Availability for 24x7 on-call is required.