Senior Network Security Architect — Fortinet/Check Point

Optus; Sydney; On-site; AUD 180,000 - 240,000; Full time

Benefits offered by this job

Employee discounts

Parental leave

Counselling services

Diversity networks

Job summary

Optus is seeking a senior network security expert based in Macquarie Park, Sydney. You will design, govern and manage secure network architectures, leading engineering, cyber security and operations to deliver secure firewall solutions, including Fortinet and Check Point platforms.

The role drives security improvements and risk assessment while mentoring others. You will contribute hands-on scripting, support incident response, and ensure designs meet security standards and lifecycle

Qualifications

• Degree in Telecommunications Engineering or equivalent.
• 8+ years in telecommunications or large enterprise environments with Fortinet/Check Point expertise.
• Strong understanding of operational processes and fault management.
• Proven ability to manage major faults across platforms and communicate with senior stakeholders.
• Experience in testing/PoC environments and understanding methodologies.
• Background in large-scale network design with scripting as an advantage.

Responsibilities

• Lead PIR and rep CSE across problem management engagements.
• Design, implement, and maintain firewall solutions using Fortinet and Check Point.
• Provide Tier-3 technical support to resolve complex security incidents.
• Translate business, security, and network requirements into scalable firewall designs.
• Deliver firewall migrations, upgrades, and high-availability implementations.
• Apply routing and switching knowledge to analyze network architectures.
• Collaborate with Network, Cyber Security, and Operations teams for end-to-end security designs.
• Perform security assessments and root-cause analysis for firewall/VPN services.
• Contribute scripting to improve operational efficiency and repeatability.
• Ensure designs align with security standards and lifecycle requirements.

Skills

Firewall design

Network security

Stakeholder comms

Scripting (Python, Perl)

Incident response

Education

Degree in Telecommunications Engineering

Tools

Fortinet

Check Point

Job description

Optus is seeking a senior network security expert based in Macquarie Park, Sydney. You will design, govern and manage secure network architectures, leading engineering, cyber security and operations to deliver secure firewall solutions, including Fortinet and Check Point platforms.

The role drives security improvements and risk assessment while mentoring others. You will contribute hands-on scripting, support incident response, and ensure designs meet security standards and lifecycle