Senior Security Analyst | 2-Year Fixed Term Contract | Melbourne

Are you a cyber all-rounder who enjoys variety and wants hands-on exposure across cloud, data centre and enterprise environments? Or are you an analyst ready to move closer to engineering work? This role gives you both: broad technical scope now, and a clear runway towards a future Cyber Engineer career.

The Opportunity
Our client is a large, well-known Australian critical infrastructure organisation in the middle of a significant cyber transformation program. They're looking for a Senior Security Analyst to join the program team on a 2-year FTC, helping strengthen their security posture across enterprise IT, cloud platforms (Azure and AWS) and a secure data centre environment.

A major focus of the program is uplifting defences against emerging AI-driven threats. That means you'll be working on genuinely current problems, like automated attack chains and AI-enabled adversary behaviour, rather than just maintaining the status quo.

What You'll Be Doing

- Building, configuring and maintaining security technologies across IT, cloud and data centre environments
- Enhancing SIEM, EDR and monitoring capabilities to detect anomalies, automated attack patterns and AI-enabled threats
- Turning threat intelligence into practical detection rules, dashboards and automated responses
- Running vulnerability scans, analysing findings and working with infrastructure and application teams on remediation
- Implementing secure configurations in Azure and AWS, including IAM, workload protection and logging
- Supporting access controls, monitoring and data protection within a secure data centre environment
- Applying security hardening baselines to servers, endpoints and cloud workloads
- Supporting incident investigation, containment and recovery




- Improving security tooling and workflows to make operations more efficient
- Maintaining runbooks, architecture diagrams and technical documentation
- Partnering with IT, Cloud Engineering, DevOps, data centre operations, Risk & Compliance and external vendors

About You

- Strong grounding in networking, operating systems and core security principles
- Hands-on experience with some combination of SIEM, EDR, firewalls, vulnerability scanners and cloud-native security tools
- Familiarity with incident triage, investigation and containment
- Understanding of frameworks such as ISO 27001, NIST CSF and the ASD Essential Eight
- Interest in, or exposure to, AI-enabled threats and how to defend against them
- Experience securing data centre environments or sensitive data zones (highly regarded)
- A collaborative, positive working style. You enjoy partnering with technical and non-technical people and can communicate clearly with both
- A degree in Cyber Security, IT, Computer Science or a related field (desirable)
- Certifications such as Security+, CEH, AZ-500, AWS Security Specialty or CISSP (advantageous)

You don't need to tick every box. If you're a broad cyber generalist, or a robust analyst keen to build engineering skills, we'd like to hear from you.

Why Apply?

- Up to $190K including Super (dependent on experience)
- Broad, hands-on exposure across enterprise, cloud and data centre security
- Work on emerging AI threat defence at the forefront of the field
- A clear opportunity to develop towards a Cyber Engineer role
- 2 years of stable, meaningful work within a well-funded transformation program
- A collaborative team environment within a large, respected organisation

Interested?

Click Apply to submit your CV, or reach out to ••••@decipherbureau.com pr ••••@decipherbureau.com for a confidential conversation.

📌 Senior Security Analyst (Melbourne)
🏢 The Decipher Bureau
📍 Melbourne