Lead Network Security Engineer

Lead Network Security Engineer (EL1 equivalent)

We are seeking Lead Network Security Engineers to support the operation, maintenance and uplift of critical network infrastructure within the Defence environment. This role focuses on securing and hardening complex network systems that support sensitive operations. You will work onsite in Canberra as part of a collaborative technical team, providing hands‑on engineering support and practical security advice.

Key responsibilities

Plan, implement and operate secure network services across hardware and virtual environments

Maintain and test network infrastructure, including firewalls, routers, servers and related devices

Assess network architectures and device configurations and provide recommendations to improve security

Apply defence‑in‑depth principles to network design and configuration

Support the protection of network communications against advanced threats

Contribute to technical advice on hardening and defending critical systems

Required experience

Minimum 5 years’ experience in a cyber or network security role

Strong experience implementing and maintaining secure network practices

Hands‑on configuration of network security components (e.g. firewalls, routers, servers)

Proven ability to assess network security architectures and recommend improvements

Experience securing network communications in complex environments

Eligibility requirements

Australian citizen

Must already hold NV1 security clearance

Ability to successfully complete Defence suitability assessments

Willing to work onsite in Canberra

Contract details

Initial 12‑month contract, with extension options

40 hours per week

Start date: June 2026

Please apply with current resume in Microsoft Word format only (.doc or .docx). If you would like to have a confidential discussion, please contact Terry Park on terry.park@davidsonwp.com, quoting reference JN‑012026‑42137.

Want to know more about Davidson? Visit us at www.davidsonwp.com

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