We are looking for a Senior Network & Security Engineer for an initial 6 month contract located in the Sydney CBD. You will join a team of 4 and will be responsible for the secure & reliable operation and continuous improvement a number of enterprise network and security platforms.

This is a senior role that will require you to own critical platforms end to end whilst upholding cyber security standards.

Responsibilities

- Provide high level support for complex incidents, including incident leadership, root cause analysis, and remediation.
- Own the enterprise network and security platforms across on‑prem, data centre, cloud (AWS), and branch environments.
- Configure and optimise firewall policies, threat prevention, and traffic inspection.
- Support cloud and hybrid networking, with a robust focus on AWS networking.
- Apply cyber risk management practices (NIST, CISM)
- Mentor junior members of staff.




- Have the ability to work after hours when required for critical responses.

What we need:

- 8+ years' experience in senior network and security engineering roles within large enterprises - financial services a bonus but not essential.
- Excellent experience with Cisco (Routing, Switching, DC, Wireless), 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.
- Experience with network automation.
- Strong understanding of network security, vulnerability management, and compliance.
- Ability to multi-task and find solutions to complex issues.

The role requires 2 days a week in the Sydney CBD office. You must hold a visa with full working rights for this role.

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📌 Senior Network Security Engineer (Sydney)
🏢 Sustainrecruit
📍 Sydney