Senior Security Analyst

Decipher Bureau; Melbourne; Hybrid; AUD 171,000 - 209,000; Full time

Benefits offered by this job

Melbourne-based

3 days in office

Job summary

Decipher Bureau is seeking a Senior Security Analyst for a 2-year fixed-term contract in Melbourne. You will work across cloud, data centre and enterprise environments, strengthening security controls and responding to AI‑driven threats.

The role offers hands‑on exposure to SIEM/EDR, vulnerability management and secure cloud configurations in Azure and AWS, with a pathway towards Cyber Engineer capabilities in a large transformation program.

Qualifications

• Broad cybersecurity fundamentals across networks, platforms and threat detection.
• Hands‑on with security tooling and incident response processes.
• Experience aligning security controls with cloud and data centre environments.

Responsibilities

• Build, configure and maintain security technologies across IT, cloud and data centre environments.
• Enhance SIEM, EDR and monitoring capabilities to detect anomalies and AI‑enabled threats.
• Turn threat intelligence into practical detection rules, dashboards and automated responses.
• Run vulnerability scans and coordinate remediation with infra and apps teams.
• Implement secure configurations in Azure and AWS, including IAM and logging.
• Support access controls, monitoring and data protection in data centres.
• Apply security baselines to servers and cloud workloads.
• Assist in incident investigation, containment and recovery.

Skills

Networking fundamentals

Operating systems

Core security principles

SIEM

EDR

Firewalls

Vulnerability scanners

Cloud security tools

Incident triage

Investigation

Containment

Communication

Education

Degree in Cyber Security / IT / Computer Science

Relevant certifications (Security+, CEH, AZ-500, CISSP)

Tools

SIEM

EDR

Firewalls

Vulnerability scanners

Cloud-native security tools

Job description

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 strong 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

Additional information

• Up to $190K incl. super, on a 2-year FTC
• Melbourne Based - 3 days in office
• A clear pathway from analyst into cyber engineering