Senior Network Security Engineer

The Decipher Bureau; City of Brisbane; On-site; AUD 160,000 - 190,000; Full time

Job summary

The Decipher Bureau in Brisbane is seeking a Senior Security Engineer to own hands-on security design and delivery. You’ll lead the design, implementation and management of security infrastructure services, working across firewall, VPN, DNS and cloud security in complex enterprise environments.

This permanent, full‑time role requires autonomy, strong incident response skills and the ability to translate technical requirements into practical security solutions, with on‑call duties and close

Qualifications

• Hands-on experience with enterprise network security infrastructure.
• Experience with enterprise firewall technologies including Palo Alto, Juniper SRX, Cisco or Check Point.
• Strong knowledge of DNS and VPN technologies.
• Experience designing and delivering technical security solutions.
• Knowledge of Azure and/or AWS security and connectivity.
• Strong networking fundamentals across routing and switching.
• Experience with IDS/IPS, load balancing and Linux/Windows.
• Excellent troubleshooting, problem‑solving and incident resolution skills.
• Ability to work autonomously and manage competing priorities.
• Strong communication and technical documentation skills.

Responsibilities

• Lead the design, implementation and management of security infrastructure services
• Manage and troubleshoot firewalls including Palo Alto, Juniper SRX, Cisco and/or Check Point
• Support secure VPN, DNS and protective DNS services
• Design, build and deploy new security service offerings
• Identify and implement improvements across existing security services
• Investigate and resolve complex network and security incidents
• Capture technical requirements and deliver appropriate security solutions
• Work across Azure and AWS security and connectivity environments
• Support technologies including routing, switching, IDS/IPS and load balancing
• Maintain clear technical documentation and build strong relationships with stakeholders
• Participate in an out‑of‑hours on‑call roster

Skills

Firewall management

VPN technologies

DNS security

Azure/AWS security

Linux/Windows

Incident response

Documentation

Autonomous work

Tools

Palo Alto

Juniper SRX

Cisco

Check Point

Job description

Setting the Scene
Our client is a large-scale technology services organisation delivering critical security and infrastructure services across complex enterprise environments.
Joining an established Security Operations team, you’ll work across firewall management, secure VPN, protective DNS and broader security infrastructure services. This is a hands‑on senior role with the opportunity to design new solutions, improve existing services and tackle complex technical challenges.

The Role
This role is suited to a Senior Security Engineer, Network Security Engineer or Security Infrastructure Specialist who enjoys hands‑on technical work and taking ownership of solutions. You’ll work autonomously across a broad technology stack while contributing to new security offerings and the ongoing improvement of existing services.

Key responsibilities:

• Lead the design, implementation and management of security infrastructure services
• Manage and troubleshoot firewalls including Palo Alto, Juniper SRX, Cisco and/or Check Point
• Support secure VPN, DNS and protective DNS services
• Design, build and deploy new security service offerings
• Identify and implement improvements across existing security services
• Investigate and resolve complex network and security incidents
• Capture technical requirements and deliver appropriate security solutions
• Work across Azure and AWS security and connectivity environments
• Support technologies including routing, switching, IDS/IPS and load balancing
• Maintain clear technical documentation and build strong relationships with stakeholders
• Participate in an out‑of‑hours on‑call roster

What you’ll bring

• Strong hands‑on experience across network and security infrastructure
• Experience with enterprise firewall technologies including Palo Alto, Juniper SRX, Cisco or Check Point
• Strong knowledge of DNS and VPN technologies
• Experience designing and delivering technical security solutions
• Knowledge of Azure and/or AWS security and connectivity
• Strong networking fundamentals across routing and switching
• Experience with technologies such as IDS/IPS, load balancing and Linux and/or Windows
• Excellent troubleshooting, problem‑solving and incident resolution skills
• Ability to work autonomously and manage competing priorities
• Strong communication and technical documentation skills

Experience with scripting, automation or MSP/managed services environments would be highly regarded. Certifications such as CISSP, PCNSE, JNCIP-SEC, CCNP or relevant vendor certifications will be viewed favourably.

What’s in it for you?

• $173k package including 12.75% super + 17.5% annual leave loading
• Permanent, full‑time opportunity
• Brisbane CBD location
• Senior hands‑on role with genuine technical ownership
• Work across complex enterprise security infrastructure
• Exposure to firewall, VPN, DNS and cloud security technologies
• Opportunity to design new security services and drive technology improvements
• Join an established and high‑performing security team
• Meaningful work supporting critical technology services

Equal opportunity and diversity are a priority. We encourage applicants from all backgrounds to apply.