Senior L3 Network Engineer – Data Centre & Automation Lead

Logicalis Group; Sydney; Hybrid; AUD 120,000 - 180,000; Full time

Job summary

Logicalis Australia is seeking a Senior L3 Network Engineer to join our Infrastructure Support Services team in Sydney or Melbourne on a 12-month fixed-term contract. You will serve as the Level 3 escalation point for mission-critical data centre networks, lead incident resolution, and mentor junior staff.

You will own troubleshooting, performance tuning, and security hardening across enterprise LAN/WAN environments, with opportunities to automate and improve operations.

Qualifications

• 10+ years of Network Engineering experience.
• Proven experience operating as an L3 escalation point.
• Strong troubleshooting skills across switching, routing, firewalls and wireless technologies.
• Experience supporting enterprise, managed services, critical infrastructure or data centre environments.
• Demonstrated experience managing P1/P2 incidents and performing root cause analysis.
• Strong understanding of ITIL service management practices.
• Excellent communication and stakeholder engagement skills.
• Experience mentoring L1/L2 support teams.
• Cisco, Palo Alto, Fortinet or Juniper certifications.
• Automation and scripting experience.

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

L3 escalation

Troubleshooting

ITIL

Mentoring

Automation

Security

Tools

Cisco

Palo Alto

Fortinet

Juniper

Job description

Logicalis Australia is seeking a Senior L3 Network Engineer to join our Infrastructure Support Services team in Sydney or Melbourne on a 12-month fixed-term contract. You will serve as the Level 3 escalation point for mission-critical data centre networks, lead incident resolution, and mentor junior staff.

You will own troubleshooting, performance tuning, and security hardening across enterprise LAN/WAN environments, with opportunities to automate and improve operations.