Senior Network and Security Engineer

About this role

Senior Network Security Engineer Clerk Grade: 9/10 $133,348 - $146,945 plus super Ongoing Full-Time opportunity Location: McKell or Parramatta – hybrid working available with 2 days per week required in office About us The Government Shared Services (GSS) Division within the Department of Customer Service delivers critical corporate and technology services that support NSW Government agencies and enable better outcomes for the people of NSW. About the role As the Senior Network Security Engineer, you will play a pivotal role in protecting and enhancing the network infrastructure that supports critical services across NSW. In this role, you'll be responsible for designing, implementing and maintaining secure, resilient, and high-performing network environments. You'll work with leading technologies, contribute to strategic initiatives, and provide expert guidance to ensure our systems remain secure, available and future-ready. If you're passionate about network security, thrive on solving complex technical challenges, and want to work in an environment where your expertise is genuinely valued, we'd love to hear from you. This role participates in a 24x7 on-call roster for level 3 escalations supporting critical business services. Key responsibilities As a Senior Network Security Engineer, you'll: *Design, implement and maintain secure, resilient and high-performing network infrastructure, including firewalls, VPNs, load balancers, routing, switching and cloud networking technologies. *Provide expert Level 3 operational support through advanced troubleshooting, incident resolution and proactive monitoring to ensure optimal network performance, availability and security. *Strengthen and protect the organisation's cyber security posture by identifying vulnerabilities, enforcing security controls, supporting audits and mitigating operational risks. *Support the delivery of strategic technology projects by evaluating emerging technologies and integrating new products and services into the operational environment. *Drive continuous improvement through change governance, operational reporting, process optimisation and the development of technical standards, procedures and documentation. About you *You are a highly experienced Network Security professional with a passion for delivering secure, resilient and high-performing network environments. You bring: *Extensive experience in senior network engineering and security roles within complex enterprise environments. *A degree in Information Technology, Computer Science or a related discipline. *Professional certifications such as Cisco CCNP/CCDP, Palo Alto Networks and/or F5 certifications (highly regarded). *Extensive hands-on experience managing complex enterprise network environments across routing and switching, wireless networking, security, load balancing, data centre and cloud technologies. *Strong expertise in technologies including Palo Alto Firewalls, Cisco ISE, Cisco ACI, Cisco Nexus, Cisco WLC, F5 BIG-IP, SD-WAN, AWS and Azure. *Experience with network protocols and services such as BGP, OSPF, DNS, DHCP, SSL/TLS certificates and VPN technologies. *Strong analytical and problem-solving skills, with the ability to troubleshoot and resolve complex technical issues. *Experience with scripting and automation technologies (desirable). *Excellent communication, documentation and stakeholder engagement skills. *The ability to work independently, manage competing priorities and perform effectively in a fast-paced, high-pressure environment. *Available to participate as an escalation point in a 24x7 on-call roster How to apply If this role sounds like you click the apply now button and include a resume (max 5 pages) and cover letter (max 2 pages) outlining how your skills and experience match the role. Why work for us? There are lots of reasons why a role with us is rewarding - working with us gives you: *The opportunity for meaningful work that matters to all of us in NSW *We have a hybrid work model (in-office and from home) with opportunity for flexible or condensed hours, with our offices always open to you balancing flexibility and connection *Flexible leave so you can recharge and make time for what counts *Much more than just a job, you can build a career here *Access to health and well-being programs including Fitness Passport Click Here to access the Role Description . For enquiries relating to recruitment please contact Bryan Kreltszheim via Bryan.Kreltszheim@customerservice.nsw.gov.au. Visit the Capability Application Tool to prepare for the recruitment process by accessing practice application and interview questions based on the focus capabilities listed in the role description. A talent pool may be created as part of this recruitment process and will be valid for up to 18 months. The talent pool may be used to fill future ongoing or temporary vacancies of the same or similar role. Closing Date: Friday 7th August 2026 @9.59 am Careers at Department of Customer Service A career at the Department of Customer Service (DCS) gives you the opportunity to help improve government services and be part of reform that benefits people across NSW. We are focused on delivering excellent customer service, digital transformation, and regulatory reform. Come join us and influence the future of our great state. Belong in our diverse and inclusive workplace The strength of our workforce lies in its diversity and embracing difference, while the key to our success is leveraging the contributions of employees with different backgrounds and perspectives. You can view our full diversity and inclusion statement here. We provide adjustments to the recruitment process for candidates, including individuals with disability. If you require an adjustment during the recruitment process, including alternate formats or have questions about the support available, please contact Talent Operations on 02 8276 8130 or csrecruitment@customerservice.nsw.gov.au. For more information, please visit Information on some of the different types of disabilities Information on adjustments available for the recruitment process