Senior L3 Network Engineer

Sydney or Melbourne | 12-Month Fixed-Term Contract Job Description: Are you a seasoned Network Engineer who thrives in complex, mission-critical environments? We're partnering with a global operator of large-scale digital infrastructure that powers cloud services, AI workloads, and some of the world's most demanding technology environments. As part of a high-performing Infrastructure Support Services team, you'll play a key role in maintaining the reliability, security and performance of enterprise-scale data centre networks.

This is a hands-on Level 3 engineering role for someone who enjoys solving complex technical challenges, leading incident resolution, mentoring support teams and continuously improving large-scale network environments. What You'll Be Doing 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 document