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About the Role

This role is for a senior network security expert responsible for designing, governing, and managing secure network architectures and platforms, ensuring compliance with security standards and best practices. It involves collaboration with engineering, cyber security, and operations teams to design and approve secure solutions, drive security improvements, provide technical leadership, and support risk assessment and incident response.

Responsibilities

Lead PIR and rep CSE across all problem management related engagements
Design, implement, and maintain firewall solutions using Fortinet (FW, Proxy, VPN) and Check Point platforms
Provide Tier-3 technical support to resolve complex and critical network security incidents
Translate business, security, and network requirements into scalable and secure firewall designs
Deliver firewall migrations, upgrades, policy optimisation, and high-availability implementations
Apply routing and switching knowledge to interpret network architectures and security traffic flows
Work closely with Network, Cyber Security, and Operations teams to ensure secure end-to-end designs
Perform security assessments, troubleshooting, and root-cause analysis for firewall and VPN services
Contribute basic scripting and automation to improve operational efficiency and repeatability
Ensure designs align with security standards, best practices, and lifecycle (EOL/EOS) requirements

Requirements

At least 8 years’ experience in telecommunications or large enterprise environments
Strong expertise in Fortinet and Checkpoint
Solid understanding of operational processes, fault management, and diagnosing customer issues
Proven ability to manage major faults across multiple platforms
Proven ability to communicate effectively with senior stakeholders (up to GM level)
Experience in testing/PoC environments, including understanding methodologies and platform limitations
Background in large-scale network design and implementation

Skills

Fortinet (FW, Proxy, VPN)
Check Point platforms
Routing
Switching
Scripting (e.g., Python, Perl)

Location

Australia

Work Type

Full-time

Experience Level

Senior
8+ years

Education Level

Degree in Telecommunications Engineering (or related field) or equivalent experience

Benefits

Competitive remuneration
Employee discounts ($80 monthly credit and 25% off Optus products)
Unique shopping discounts with retail partners
Competitive leave policies
Additional 'Connected’ days
Up to 16 weeks paid Parental Leave
Employee-led networks and diversity initiatives
Free access to counselling and support services, 24/7

About the Company

Optus is an Australian telecommunications company delivering mobile, broadband and digital solutions.
At Optus, we are strengthened by others and that means valuing diversity and saying ‘yes’ to embracing individual differences.
For more information on Diversity, Inclusion & Belonging at Optus, please visit https://www.optus.com.au/about/inclusion-diversity

Equal Opportunity

We are committed to ensuring that our application process provides an equal employment opportunity to all job seekers, including individuals from diverse gender, cultural and linguistic backgrounds, individuals with a disability, individuals identifying as being part of the LGBTQIA+ community, individuals who may have served in the armed forces or who identify as Aboriginal and/or Torres Strait Islander.
If you require any adjustments or accessibility support to participate fairly and equitably in the recruitment process, please email AccessibleRecruitment@optus.com.au or call 1800 309 170.