Senior Network Security Engineer – Hybrid Cloud Defense

Westbury Partners; Sydney; On-site; AUD 140,000 - 190,000; Full time

Job summary

Westbury Partners in Sydney seeks a Senior Network Security Engineer to drive protection across hybrid environments. You will lead hands-on security engineering, incident response, and threat detection within a global team.

You will apply expertise in networks, security operations, cloud controls, and automation to strengthen cyber resilience and protect critical assets. Strong collaboration with IT and engineering is essential.

Qualifications

• 5+ years of experience in network engineering and/or security.
• Strong multi-vendor firewall experience and knowledge of modern network security technologies.
• Solid understanding of networking protocols and security principles across multiple layers.

Responsibilities

• Operate and maintain enterprise security technologies including firewalls, SASE, CASB, proxies, NAC, and cloud security controls.
• Provide hands-on support for security platforms within a global 24/7 follow-the-sun operating model, including rotational weekend coverage.
• Investigate and resolve complex security and network issues, taking ownership from identification through to resolution.
• Monitor and analyse security logs, alerts, vulnerabilities, and network traffic to identify and mitigate threats.
• Support network security architecture, including segmentation, encryption, secure remote access, and L7 security controls.
• Implement automated, scalable security solutions across hybrid, multi-cloud, and on-premises environments.
• Collaborate with IT, cloud, infrastructure, and engineering teams to embed security into technology and operational practices.
• Help design, implement, and enforce security policies, controls, and best practices.
• Use tools such as Wireshark and tcpdump for packet analysis and advanced troubleshooting.
• Contribute to vulnerability management, identity controls, endpoint protection, threat detection, and intrusion prevention.
• Apply an adversarial mindset to identify emerging threats and strengthen defensive capabilities.
• Lead projects, influence architectural decisions, and mentor less experienced team members.

Skills

Networking

Security engineering

Operating systems

Cloud technologies

Security operations

Programming

Tools

Wireshark

tcpdump

Firewalls

SASE

CASB

NAC

Job description

Westbury Partners in Sydney seeks a Senior Network Security Engineer to drive protection across hybrid environments. You will lead hands-on security engineering, incident response, and threat detection within a global team.

You will apply expertise in networks, security operations, cloud controls, and automation to strengthen cyber resilience and protect critical assets. Strong collaboration with IT and engineering is essential.