Senior Network Security Engineer

HCF group; Sydney; Hybrid; AUD 150,000 - 190,000; Full time

Benefits offered by this job

Flexible working arrangements

Mental health and wellbeing programs

18 weeks of parental leave

Job summary

HCF is seeking a Senior Network & Security Engineer to own and operate enterprise networks across on‑prem, data centre, cloud, and branch environments. You will lead complex incidents and drive improvements aligned with NIST/CISM principles and HCF standards.

You will mentor juniors, maintain runbooks and documentation, and collaborate with vendors to ensure secure, reliable outcomes in a complex, regulated setting.

Qualifications

• 8+ years in senior network and security roles in large enterprise or regulated environments.
• Hands-on experience with Cisco, Palo Alto, SD-WAN, Infoblox, and F5/NGINX.
• Experience designing and operating AWS networking (VPCs, Transit Gateway, security controls).
• Understanding of hybrid cloud networking (AWS/Azure) and network security/compliance.
• Strong scripting: Python and/or PowerShell; IaC experience with Terraform.

Responsibilities

• Own and operate HCF's enterprise network and security platforms across on‑prem, data centre, cloud, and branch environments.
• Provide Tier 3 support for complex incidents, including incident leadership, root cause analysis, and remediation.
• Maintain lifecycle management, upgrades, and vulnerability mitigation of enterprise networks.
• Act as technical authority for network availability, performance, segmentation, and secure traffic flows.
• Configure and optimise firewall policies, threat prevention, and traffic inspection.
• Support cloud and hybrid networking, with a strong focus on AWS networking.

Skills

Cisco Routing & Switching

Palo Alto

SD-WAN

AWS Networking

Network Security

Python

PowerShell

IaC Terraform

Vulnerability Management

Incident Response

Documentation

Stakeholder Management

Education

Bachelor's degree in IT/Computer Science

CCNP

PCNSE

AWS Solutions Architect

Tools

Cisco IOS

Infoblox

F5/NGINX

AWS VPC

Transit Gateway

Job description

The Senior Network & Security Engineer is responsible for the secure, reliable operation and continuous improvement of HCF’s enterprise network and security platforms across on premises, data centre, cloud, and branch environments. This is a hands on senior engineering role acting as a Tier 3 escalation point and technical authority across routing, switching, firewalls, wireless, SD WAN, and application delivery technologies. You will own critical platforms end to end, lead complex incident response, and drive improvements aligned with HCF cyber security standards and regulatory requirements.**Key responsibilities*** Own and operate HCF's enterprise network and security platforms across on‐prem, data centre, cloud, and branch environments.* Provide Tier 3 support for complex incidents, including incident leadership, root cause analysis, and remediation.* Maintain and update HCF's network systems, including lifecycle management, upgrades, and vulnerability mitigation of enterprise networks.* Act as a technical authority for enterprise networks, availability, performance, segmentation, and secure traffic flows.* Configure and optimise firewall policies, threat prevention, and traffic inspection.* Support cloud and hybrid networking, with a strong focus on AWS networking.* Apply cyber risk management practices aligned with NIST, CISM principles, and HCF standards.* Strong stakeholder management skills and ability to independently collaborate with vendors and service providers to deliver reliable, secure outcomes.* Mentor junior engineers and uplift engineering practices.* Maintain clear documentation, standards, runbooks, and operational procedures.**Essential Skills*** 8+ years’ experience in senior network and security engineering roles within large enterprise or regulated environments.* Strong hands‐on experience with Cisco (Routing, Switching, ACI, DC, Wireless, ISE), Palo Alto, SD‐WAN, Infoblox, and F5/NGINX.* Strong experience working on enterprise networks and managing complex environments.* Proven experience designing and operating AWS networking, including VPCs, Transit Gateway, and security controls.* Understanding of hybrid cloud (AWS and Azure) networking concepts.* Experience with network automation and monitoring tools* Scripting skills using Python and/or PowerShell and understanding of IaC(Terraform, CI/CD).* Strong understanding of network security, vulnerability management, and compliance.* Excellent problem‐solving, handling escalations, and stakeholder communication skills.**Desirable*** Experience with Security Service Edge (SSE) and Zero Trust architectures.* Background in healthcare or financial services.* Relevant certifications (e.g. CCNP, PCNSE, AWS Solutions Architect). **About HCF**At HCF, our purpose is to bring our human touch to healthcare. Since 1932 we’ve been putting our members and their health first. As Australia’s largest not-for-profit health fund, we cover 2 million members with health, life, travel and pet insurance and our vision is to make healthcare understandable, affordable, high quality and member centric. We want to be true health partners to our members, easily guiding the healthcare choices that are right for them. At HCF, our values are the way we do things and create the necessary culture to help us realise our purpose and deliver our Strategy. Living our values in action we step forward, walk in their shoes, stay human, make it better and get there together.**Culture & Benefits** *Purpose-driven passion* We’re united by a common purpose: to make healthcare affordable, understandable, high quality and member-focused. *Wellness and work-life balance* We’ll empower you with the necessary skills and tools to support your personal wellbeing journey, ensuring you perform at your best. Our offerings include:* Flexible working arrangements* 50% subsidy on HCF hospital and/or extras cover* Family-friendly certified employer* 18 weeks of parental leave for all new parents* Mental health and wellbeing programs, including workshops, fitness classes, flu vaccinations, skin checks and more* Discounts on HCF’s products, including life, pet and travel Insurance, as well as discounts at Fitness First gyms and on our eyecare products.*Collaboration and inclusivity* We embrace diversity as our strength and are committed to maintaining an inclusive and collaborative work environment. Our workplace is welcoming and safe for all our employees, irrespective of their unique characteristics including age, ethnicity, cultural or spiritual background, gender identity, disability, education and socio-economic status. *Continuous learning and growth* We believe in lifelong learning. HCF provides opportunities for personal and professional development. From workshops to mentorship programs, we encourage your growth and curiosity. **Next steps** If you **require any adjustments** to assist you in making your application or during the recruitment or onboarding process, please reach out to **Talent Acquisition –** **[e-mail]**to discuss or call 02 9290 0464. We encourage applicants to submit their applications at their earliest convenience, as at HCF, we review applications as they are submitted, and may have filled the role prior to the job closing date. Please be aware of recruitment scams, phishing, and impersonation attempts. HCF will never request payment or sensitive financial information at any stage of the recruitment process. If you receive suspicious communications claiming to be from HCF, please verify them through our Careers page or contact us directly.At HCF, we want our people to feel supported and empowered to be their best self at work. We create a flexible, inclusive, family-friendly culture so our employees are inspired and motivated to achieve the best for themselves and our members. Our purpose is to bring a human touch to every part of the healthcare system, in big ways and small. Our values inform the way we do things. They help us build the culture we need to realise our purpose. Our values are to:* Step Forward* Get There Together* Make it Better* Stay Human* Walk in Their Shoes.We’ve invested in our people and teams to ensure they’re equipped to reach their career goals. We help team members expand their skill sets and develop personally through various internal and external courses, as well as broaden their on-the-job experience through transfers, secondments or promotions.