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Network Operations Engineer - Contract

Optiver
🇦🇺SydneyMediorContractorPosted June 22, 2026

About the Role

The Network Operations Engineer is responsible for the network and security infrastructure that underpins Optiver's trading and business operations across the Asia Pacific region. This role encompasses office networks, data centre environments, and complex international WAN management. You will provide reliable, fast, and well-supported network infrastructure while optimizing reliability, capacity, scalability, and latency.

  • Support end-to-end infrastructure deployments in Asia Pacific data centers including network and security platforms
  • Drive research, innovation, and implementation of infrastructure capacity and reliability optimizations
  • Build, manage and support complex international LAN/WAN and security environments using modern Infrastructure as Code tooling
  • Collaborate with developers, researchers and hardware engineers on projects requiring stable and scalable platforms
  • Monitor the health and performance of network and infrastructure systems, investigating alerts and proactively identifying operational issues
  • Participate in incident response, working with internal teams and vendors to diagnose and resolve service impacting problems

Requirements

  • 3-8 years of experience working as a network engineer in an operational environment
  • Experience in managing network systems using Infrastructure as code (IaC) methodology
  • Experience working in a multi zone, multi tier firewall architecture across APAC
  • Solid understanding of network transport and routing protocols such as TCP/UDP, OSPF, BGP, and Multicast
  • Experience designing, implementing and supporting DC environments
  • Experience in monitoring and managing diverse international WAN networks
  • Strong knowledge of L2/L3 networking, firewalls, and network security
  • Experience managing infrastructure using Infrastructure as Code approaches and tools such as Git, Terraform, or Ansible
  • Certifications such as Arista ACE, PCNSE, CCNP, or CCIE are a plus

What You'll Get

  • Competitive remuneration and additional leave entitlements
  • Training, mentorship and personal development opportunities
  • Gym membership plus weekly in-house chair massages
  • Daily breakfast, lunch and an in-house barista
  • Regular social events including a company trip every two years
  • The chance to work alongside best-in-class professionals
  • Reasonable adjustments during the recruitment process