Top Network Engineer Jobs in Sydney

Monitor, detect and respond to security alerts on edge security platforms; investigate threats, perform incident response and remediation; configure and optimise vendor security services; conduct traffic analysis, log correlation and threat hunting; support vulnerability assessments and post-incident reviews; collaborate with internal teams and vendor partners and maintain operational documentation.

Provide first- and second-level network support, monitor and troubleshoot LAN/WAN/Wi-Fi/VPN and connectivity issues; assist with device configuration, patching, provisioning, user access, incident management, documentation, stakeholder engagement and vendor collaboration. Contribute to infrastructure improvements and perform occasional interstate travel.

The Network Engineer Tier 3 is responsible for supporting diverse network infrastructures, troubleshooting complex issues, and providing technical leadership. Tasks include network design, implementation, maintenance, and evaluation of network performance. The role also involves documentation and compliance with standards.

The Network Engineer Tier 2 supports diverse network infrastructures, ensuring compliance and troubleshooting across various networks while integrating new technologies.

Lead global corporate and cloud network architecture and roadmap. Design, deploy and operate secure, highly available hybrid LAN/WAN/Wi‑Fi/VPN across multi‑cloud and multi‑region sites. Own incident response, vendor hardware configuration, international connectivity (including China), infrastructure-as-code automation, documentation, mentoring, and participate in global on‑call rotations.

Build and design proxy infrastructure from scratch, implement rotation systems, manage IP reputation, optimize for performance, and develop reverse proxy systems for various proxy types.

Manage and secure cloud and on-prem network infrastructure, optimise firewalls and SD-WAN, provide L2/L3 operational support, automate deployments with IaC, collaborate on cloud networking architecture, and participate in a 24x7 on-call roster and incident reviews.

Design, build, automate, and operate secure, scalable cloud networking across AWS (with alignment to GCP and NSX). Develop reusable Terraform modules, drive best practices, collaborate with DevOps and security teams, provide technical leadership and mentorship, own operational support and incident escalation, and maintain architecture and process documentation.

Support and manage ASX core network infrastructure (datacentre, internet, office, service provider), respond to incidents, perform capacity planning and monitoring, assist with network deployments and projects, operate within ITIL processes, design and support F5 and Palo Alto devices, and liaise with stakeholders to deliver mission-critical network solutions.

Deliver complex network projects from design through production across LAN/WAN/SD‑WAN/MPLS/VPN/wireless. Lead discovery, configure routers/switches/firewalls, perform cutovers and post‑migration stabilization, produce designs and plans, engage stakeholders, and improve project delivery processes.

The role involves supporting infrastructure deployments, managing LAN/WAN environments, optimizing capacity and reliability, and collaborating with teams for network solutions.

The Senior Software Engineer will design and implement automation for complex network workflows, collaborate with telco teams, and employ AI-assisted tools for efficient solutions.

Support and maintain LAN, WAN, WLAN, voice and security infrastructure; provide Level 2 support, monitor capacity and performance, assist in network projects, maintain firewalls, email/internet filtering and VoIP systems, and produce documentation.

Support and operate Optiver's APAC network and security infrastructure across offices and data centers. Deploy and manage LAN/WAN, multi-zone firewall architectures, and DC environments using IaC tools. Monitor performance, respond to incidents, collaborate with internal teams and vendors, and drive capacity, reliability, and latency optimizations.

Lead and execute design, migration and build-out of core LAN and switching infrastructure for a data-centre relocation. Plan and raise changes, implement layer 2/3 fibre switching, configure routing protocols, ensure fault tolerance, test and sign off, assist DR client migrations and minimise user impact.

Lead and execute a federal datacentre relocation: design and implement IP/X.25 networks, layer 2/3 fibre and core switching, configure WAN/LAN hardware, manage OSPF/BGP/NAT/VLANs, support VoIP/PABX, create migration plans and test/signoff, and produce technical/operational documentation.

The Senior Network Engineer will architect and deliver solutions for QRT's network infrastructure, focusing on low latency trading environments. Responsibilities include managing complex networks, collaborating with teams, and staying informed on industry trends.

Seeking a Senior Network Automation Engineer to enhance and maintain our Perl-based network automation systems, focusing on API development, technical debt reduction, and mentoring junior engineers.

Own customer-facing support for Point One's correction network: troubleshoot complex incidents, lead incident response and RCA, build monitoring/alerting and scalable support processes, surface operational insights, and coach a growing ops/support team.

The Network Engineer will design, implement, and support enterprise networking infrastructure, manage Cisco equipment, FortiGate firewalls, and participate in troubleshooting and optimization tasks across multiple sites.