Senior Network Security Engineer — AI Cloud (Onsite Sydney)

Iren Group; Sydney; On-site; AUD 130,000 - 190,000; Full time

Benefits offered by this job

Competitive salary range

Incentive programs

Job summary

IREN in Sydney is seeking a Senior Network Security Engineer to design, deploy and operate security controls for our AI cloud data centres and WAN. You will harden firewalls, manage VPNs, and lead incident response across data centres, the WAN, and edge.

You will work with Python or Go to automate security policies and contribute to secure HPC/GPU environments, while aligning with ISO 27001, SOC 2 and NIST standards.

Qualifications

• Solid experience in network security engineering in data centre, cloud or service provider environments.

Responsibilities

• Build, operate and harden firewalls, VPNs and segmentation across data centres, network locations and cloud connections.
• Own firewall and access policy: rule reviews, clean-up, change control and enforcement of least privilege.
• Secure remote and administrative access to network infrastructure, including multi-factor authentication and privileged access paths.
• Protect the network edge, including BGP security, route filtering and DDoS readiness with our carriers.
• Monitor and investigate network security events using SIEM, IDS/IPS and flow data, and lead network incident response.
• Run vulnerability management for network devices, from firmware advisories through patching and verification.
• Automate security operations, including firewall policy deployment, configuration compliance checks and alert enrichment, so that controls are enforced by code.
• Develop and maintain security tooling with Git, code review and CI/CD, and use AI to speed up investigation and triage.
• Support audits and customer security requirements, such as ISO 27001 and SOC 2, with clear evidence and documentation.

Skills

Network security engineering

Firewalls

VPNs

Segmentation

Routing and switching

SIEM/IDS/IPS

Python/Go

HPC/GPU security

ISO 27001 / SOC 2 / NIST

Written communication

Tools

Fortinet

Palo Alto Networks

Cisco

Juniper

Arista

Job description

IREN in Sydney is seeking a Senior Network Security Engineer to design, deploy and operate security controls for our AI cloud data centres and WAN. You will harden firewalls, manage VPNs, and lead incident response across data centres, the WAN, and edge.

You will work with Python or Go to automate security policies and contribute to secure HPC/GPU environments, while aligning with ISO 27001, SOC 2 and NIST standards.