Senior Network Operations Engineer (On-Site, 24/7)

Singtel; Sydney; On-site; Confidential; Full time

Benefits offered by this job

Parental leave (inclusively paid)?

Paid leave (Connected Leave)

onsite facilities

Bus from Macquarie Uni

parking available

Job summary

Optus, based in Macquarie Park, Sydney, is seeking an IP & Security Technical Specialist to maintain and improve the network across mobile, broadband and digital solutions. The role operates on-site with 24x7 or 9-5 rosters, delivering high-quality support, leading incidents and driving improvements with vendors and engineering teams.

You will contribute to change governance, network upgrades and service reliability, while mentoring less experienced staff and aligning with Optus’ network

Qualifications

• Extensive hands-on expertise maintaining and troubleshooting multi‑vendor IP and security networks.
• Strong understanding of service provider network design, routing and security practices.
• Experience with network automation tools such as Python and Ansible is desirable.

Responsibilities

• Rapidly resolve complex network faults beyond the Managed Service’s scope and manage critical incident escalations to minimise customer impact.
• Lead root cause analysis, implement permanent corrective actions, and participate in change governance including representation at Change Advisory Board meetings.
• Recommend and approve network design changes to improve service reliability and support the introduction of new technologies and products.
• Ensure planned network upgrades and deployments are aligned with quality and performance standards, and contribute to network expansion strategies.
• Work closely with Engineering, Vendors, and Managed Service Suppliers to align operational processes and architecture standards, ensuring technical supportability.
• Provide regular technical insights into KPIs and SLAs, identify performance gaps, and support resolution efforts through stakeholder collaboration.
• Drive continuous improvement initiatives through automation of incident management and alarm handling, while contributing to the evolution of operational tools and strategies.

Skills

IP/MPLS routing

Multi-vendor networks

Security practices

Network design & routing

Python

Ansible

CCNP SP (desirable)

Tools

Cisco

Juniper

Nokia

Fortinet

Check Point

Job description

Optus, based in Macquarie Park, Sydney, is seeking an IP & Security Technical Specialist to maintain and improve the network across mobile, broadband and digital solutions. The role operates on-site with 24x7 or 9-5 rosters, delivering high-quality support, leading incidents and driving improvements with vendors and engineering teams.

You will contribute to change governance, network upgrades and service reliability, while mentoring less experienced staff and aligning with Optus’ network