Top Network Engineer Jobs in Sydney

Performs network optimization, capacity planning, traffic analysis, forecasting, and bottleneck identification. Designs, deploys, supports, and troubleshoots IP, WAN, mobile, and fixed network solutions. Develops Python automation scripts, conducts root cause analysis, supports network upgrades and modernization, and collaborates with operations, architecture, and vendors. Requires 6+ years of network engineering experience, telecom exposure, and strong routing and switching fundamentals.

Designs, implements, and optimizes carrier-grade IP/MPLS and SRv6 service provider networks. Provides advanced L3 operational support, troubleshoots complex issues, leads root cause analysis for critical incidents, and supports network transformation and migration programs. Develops network automation using Python, Ansible, YANG, and NETCONF/RESTCONF while managing configuration and continuous operational improvements.

Plan, design, implement, and support enterprise Exchange transformation initiatives, including data center migrations, site consolidations, upgrades, hybrid deployments, tenant migrations, and cloud modernization. Manage mail flow, high availability, Active Directory integration, security, troubleshooting, automation, and reporting. Collaborate with infrastructure, security, cloud, and business stakeholders to execute migrations with minimal disruption and maintain service availability.

Designs, implements, and supports enterprise data center network transformation and migration initiatives. Responsibilities include Cisco data center infrastructure administration, routing and switching, network security and load balancer integration, troubleshooting, infrastructure assessments, technology refreshes, documentation, and stakeholder coordination. The engineer supports large-scale modernization programs while ensuring network availability and performance.

Designs, deploys, and operates resilient data center network fabrics supporting GPU, AI, storage, and high-performance computing infrastructure. Responsibilities include hardware evaluation, BGP and EVPN-VXLAN network design, congestion management, connectivity integration, automation, monitoring, documentation, vendor collaboration, troubleshooting, and technical escalation. The role also develops network architectures, supports deployments, and provides technical guidance to leadership and customers.

Hands-on Network Engineer responsible for designing, deploying, optimizing, and automating enterprise network infrastructure across traditional, cloud, and hybrid environments. The role requires expertise in routing, DNS, DHCP, VPNs, cloud networking, dedicated connectivity, network security, Infrastructure as Code, and highly available multi-region architectures. The engineer will support complex, multi-site environments and use Terraform or CloudFormation to automate network provisioning.

Designs, configures, maintains, and troubleshoots complex LAN, WAN, wireless, cloud, and multi-site network environments. Supports Cisco security devices, F5 load balancers, VPNs, routers, switches, firewalls, and network virtualization technologies. Maintains documentation, monitoring, ticketing, change management, service levels, and assigned projects while participating in a 24/7 on-call roster.

Designs and supports network security infrastructure as a firewall engineer, performs remediation work, and uses DevOps tools including Bitbucket, Jenkins, JIRA, GitHub, Terraform, and Vault. The role requires at least six years of experience.

Designs, implements, maintains, and optimizes enterprise voice, data, security, WAN, and SD-WAN infrastructure. Provides Level 3 technical support, manages telecommunications carriers and vendors, monitors service performance, maintains documentation and security, supports incidents and on-call escalation, and leads network infrastructure projects and improvements.

Own and continuously improve enterprise network and security platforms across on-premises, data center, cloud, and branch environments. Provide Tier 3 incident support, lead root cause analysis, manage firewalls and secure traffic flows, design AWS and hybrid-cloud networking, mitigate vulnerabilities, and maintain operational standards. The role also involves stakeholder and vendor collaboration, mentoring junior engineers, network automation, documentation, and alignment with cybersecurity and regulatory requirements.

Build out and expand Cloudflare's global network by provisioning and maintaining datacenter hardware and network devices, performing remote server administration via IPMI/BMC, configuring network equipment, managing contractors, automating tasks with Python/Changie and agentic AI, creating SOPs/runbooks, and coordinating cross-connects and deployments.

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.

Leads cross-functional air network projects across Asia-Pacific, advising on customer linehaul requests and designing cost-effective routing, capacity, and schedule solutions. Coordinates with airline partners, vendors, operations, procurement, and planning teams to implement network solutions. Develops automation tools and planning-system improvements while tracking performance, supporting route launches, and managing operational execution.

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

Maintain, troubleshoot, and optimize high-performance, low-latency infrastructure supporting global financial exchanges. Responsibilities include tuning RHEL systems, managing highly available routing and multicast networks, implementing security and disaster recovery controls, coordinating maintenance windows and upgrades, and improving automation, configuration management, observability, and operational tooling using Ansible, Zabbix, and Python.

Design, implement, and troubleshoot local and wide-area network solutions (IP/VoIP), lead network projects, create proof-of-concepts, coordinate vendor installs, and support go-live and maintenance. Support monitoring, virtualization (SDN/SD‑WAN), and emerging wireless/5G technologies while communicating requirements to teams and customers.

Lead network operational evolution toward SRE and IaC, automate virtual appliances, resolve major incidents, support hybrid cloud migrations and data centre decommissioning, and collaborate with architecture, security, and infrastructure teams to improve reliability and automation.

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.

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.