Network Security Engineer

NRI Australia & New Zealand; Melbourne; Hybrid; AUD 140,000 - 190,000; Full time

Job summary

NRI Australia & New Zealand is seeking an experienced Senior Network Engineer in Melbourne to support and enhance enterprise networks. You will design, implement and troubleshoot Cisco environments across data centres, routing, switching and security, while enabling hybrid work arrangements and travel as needed.

Lauded candidates will have strong Cisco expertise, hands-on BAU experience, and the ability to deliver high‑quality designs and documentation within a dynamic, regional team.

Qualifications

• Extensive hands-on experience with Cisco enterprise networks.
• Experience with Cisco ACI, Nexus, spine-leaf, SDN, IPN.
• Strong routing and switching with Catalyst switches.
• Experience with Cisco WLCs, APs, anchoring, WIPS, CMX.
• Knowledge of Cisco ISE and Firewalls.
• Familiar with Catalyst Centre/DNAC, Cisco DNA, Nexus Dashboard, Firepower Management Centre.
• Experience producing technical designs and maintaining network documentation.
• Strong troubleshooting and BAU operational support.
• Valid driver’s licence.

Responsibilities

• Provide BAU network support, troubleshooting and break/fix services.
• Design, implement and maintain Cisco networking solutions.
• Support Cisco ACI, Nexus and spine-leaf data centre environments.
• Manage enterprise routing, switching, WAN and wireless infrastructure.
• Support Cisco security technologies, including ISE and firewalls.
• Produce high-level and low-level designs and maintain technical documentation.
• Participate in rotational on-call support, including P1/P2 incidents and out-of-hours activities.
• Travel to different sites as required, with expenses reimbursed.

Skills

Cisco networking

Cisco ACI

Cisco Nexus

Spine-Leaf

SDN

IPN

Routing & Switching

Catalyst 9300

WLAN Controllers

Access Points

WIPS

CMX

Cisco ISE

Cisco Firewalls

Catalyst Centre/DNAC

Cisco DNA

Nexus Dashboard

Firepower Management Centre

Network Design

Documentation

Troubleshooting

BAU Support

Driver's Licence

Education

IT-related degree (completed or in progress)

CCNP certification or equivalent Cisco expertise

Tools

Catalyst Centre/DNAC

Cisco DNA

Nexus Dashboard

Firepower Management Centre

Job description

At NRI, we bring together deep technology expertise, capability and real‑world industry experience to help organisations solve complex challenges and shape what's next. From IT advisory and enterprise transformation to quality engineering, cyber, cloud and managed services, we work across the full technology lifecycle - turning ideas into outcomes that make a difference. With a global heritage and a strong presence across Australia, New Zealand and Asia, we combine the scale and capability to take on complex challenges with the agility, collaboration and the personal connection of a local team.

THE OPPORTUNITY

Our Managed Services team helps organisations maximise the value of their technology investments by ensuring critical systems remain secure, resilient, high‑performing and ready for the future. Working across cloud, infrastructure, networks, cybersecurity, applications and service management, we deliver proactive, outcome‑focused services that support the technology environments businesses depend on every day. Leveraging automation, AI‑driven insights and deep technical expertise, we help clients improve reliability, optimise performance, reduce risk and drive continuous improvement. Joining our team means collaborating with talented specialists, working across diverse technologies and contributing to meaningful outcomes for some of Australia's leading organisations.

We're looking for an experienced Senior Network Engineer with strong Cisco expertise to join our team, supporting and enhancing complex enterprise network environments. This is a hands‑on role combining BAU support, network design, implementation and troubleshooting across data centre, routing and switching, wireless and network security technologies.

You'll be responsible for maintaining, supporting and improving enterprise network infrastructure, working across both operational support and technical project delivery. The role requires someone comfortable troubleshooting complex network issues, delivering technical solutions and providing support across a broad Cisco environment.

We offer hybrid working arrangements, balancing time in the office each week with the flexibility to work remotely, depending on role and location.

KEY RESPONSIBILITIES

• Provide BAU network support, troubleshooting and break/fix services.
• Design, implement and maintain Cisco networking solutions.
• Support Cisco ACI, Nexus and spine‑leaf data centre environments.
• Manage enterprise routing, switching, WAN and wireless infrastructure.
• Support Cisco security technologies, including ISE and firewalls.
• Produce high‑level and low‑level designs and maintain technical documentation.
• Participate in rotational on‑call support, including P1/P2 incidents and out‑of‑hours activities.
• Travel to different sites as required, with expenses reimbursed.

SKILLS & EXPERIENCE

• Strong hands‑on experience supporting complex Cisco enterprise networks.
• Experience with Cisco ACI, Nexus, spine‑leaf architecture, SDN and IPN.
• Strong routing and switching knowledge, including Cisco Catalyst 9300 and legacy Catalyst switches.
• Experience with Cisco wireless LAN controllers, access points, anchoring, WIPS and CMX.
• Knowledge of Cisco ISE and Cisco Firewalls.
• Familiarity with Cisco management platforms, including Catalyst Centre/DNAC, Cisco DNA, Nexus Dashboard and Firepower Management Centre.
• Experience producing technical designs and maintaining network documentation.
• Strong troubleshooting skills and previous BAU operational support experience.
• Current driver's licence and access to a motor vehicle.

Highly Regarded:

• CCNP certification or equivalent Cisco expertise.
• Degree in an IT‑related field, completed or in progress.

WHY YOU'LL LOVE WORKING AT NRI

At NRI, we believe great careers are built through solving complex challenges, continuous growth and the opportunity to make an impact. Whether you're deepening your technical expertise, developing as a leader or exploring where your career can take you next, you'll have the opportunity to build capability, make an impact and shape what's next.

Build expertise that makes an impact. Work alongside talented technologists, consultants, industry specialists and problem‑solvers on complex challenges that create real outcomes for our clients. You'll be surrounded by people who are generous with their knowledge and invested in helping each other grow.

Shape your career. Your career is yours to build. With clear career pathways, structured development, technical certification opportunities, leadership programs and access to extensive learning resources, you'll have the support to develop your expertise and explore new opportunities.

Make your expertise count. From performance and technology delivery, transformation, quality engineering and managed services, you'll have the opportunity to take on challenging and rewarding work, contribute your ideas and see the impact of what you do.

Bring your perspective, belong here. We want NRI to be a place where people feel respected, included and able to do their best work. We value different experiences, perspectives and ways of thinking, and are committed to creating an environment where everyone can belong and contribute.

YOUR EXPERIENCE MATTERS, YOUR POTENTIAL IS YOURS TO EXPLORE

You don't need to tick every box to belong at NRI. We value curiosity, capability, attitude and the willingness to learn and we encourage you to apply if you can see yourself growing into this role – or another opportunity across NRI.

At NRI, we value different experiences, perspectives and ways of thinking. We are committed to an inclusive workplace where everyone has the opportunity to belong, contribute and grow.

This role is based on [Indigenous Place Name] Land (Sydney). Change for each region.