Cyber Security Specialist

Australia Post; Melbourne; Hybrid; AUD 120,000 - 170,000; Full time

Job summary

Australia Post is seeking an SIEM Cyber Security Specialist to bolster our enterprise SIEM platform across cloud, data centre and OT environments. You will design ingest pipelines, tune detections, and work with Cloud, Network and Security teams to strengthen threat detection and response capabilities.

You’ll be part of a technically strong team delivering enterprise-scale SIEM capabilities, with hybrid and flexible work options to support collaboration and impact across Australia.

Qualifications

• 4+ years’ experience with SIEM technologies (Microsoft stack)
• Experience designing and building log ingestion and onboarding
• Strong detection engineering and threat use‑case development
• Scripting (e.g. Python, SQL, PowerShell)
• Knowledge of MITRE ATT&CK and NIST frameworks

Responsibilities

• Support and enhance the SIEM platform ensuring availability and data quality
• Design and build log ingestion pipelines from diverse platforms
• Engineer, tune and maintain detections, alerts and dashboards
• Apply threat intelligence to detection engineering
• Build automation to improve Threat Detection & Response processes
• Collaborate with internal teams to ensure end-to-end detection validity

Skills

SIEM engineering

Threat detection

KQL queries

Python scripting

CI/CD pipelines

Tools

Azure Sentinel

Job description

Working in tech at Australia Post is where innovation and problem solving meets great people and agile working. You’ll work with bright people on building and maintaining products and services that you and every other Australian get to benefit from every day. Whether you’re working from our modern office or your one at home, you’ll be part of a culture of collaboration and connection, making long-lasting impact right across Australia.

About the Opportunity

As SIEM Cyber Security Specialist, you’ll play a critical role in supporting and enhancing Australia Post’s SIEM platform, which underpins all Threat Detection & Response capability across cloud, data centre and operational environments.

Australia Post is investing heavily in cyber security as part of a major enterprise transformation. You’ll be part of a technically strong, collaborative team working closely with Cloud, Network, Identity, Architecture and Security teams across the enterprise and strengthen our ability to detect and respond to threats across large‑scale IT and OT environments. This is a technical, hands‑on role for someone who enjoys building, improving and operating SIEM capability at enterprise scale.

You’ll also

• Support and enhance the SIEM platform, ensuring availability, performance and data quality
• Design and build log ingestion and ETL pipelines to onboard data from diverse platforms and applications
• Engineer, tune and maintain detections, correlation rules, alerts and dashboards aligned to threat use cases
• Apply threat intelligence and threat landscape knowledge to detection engineering
• Build automation and improve operational processes across Threat Detection & Response
• Work closely with internal technology teams to ensure end‑to‑end detection validity from source to alert

About you

You’re a technically strong cyber security professional with strong experience in SIEM engineering and detection (Microsoft stack). You have worked in complex, large environments, collaborating across teams, and translating security requirements into practical technical solutions.

You’ll also need

• 4+ years’ experience working with SIEM technologies (Microsoft Technologies)
• Microsoft Azure / Sentinel or Industry certifications such as CISSP or GIAC (highly regarded)
• Designed and built log ingestion and log onboarding
• Strong experience in detection engineering and threat use‑case development
• Building data ingestion pipelines, DCRs, ETL, Codeless Connectors and Syslog
• Strong KQL capability (queries, detections, dashboards)
• Knowledge of frameworks such as MITRE ATT&CK and NIST
• DevSecOps and CI/CD pipelines
• Scripting (e.g. Python, SQL, Powershell)

How we’ll deliver for you

• Enterprise‑scale impact – Work on SIEM and detection capability covering IT and OT environments
• Transformation work – Be part of major, multi‑year cyber security programs
• Career growth and opportunities – Expand your skills
• Bring your whole self to work every day and be met by a welcoming bunch of people who respect and support you
• Flexible and hybrid working arrangements, like the opportunity to work from home two days per week
• Exclusive team member discounts and offers for more cash in your pocket, evolving policies for flexible working, leave types and access to health and wellbeing resources

All walks, one route

It takes a lot of us to deliver for every Australian – and it’s important to us that our people behind the parcels reflect the people receiving them. We come from all walks. Different backgrounds, different ages, different genders, different sexualities and different abilities, but we all believe in the same purpose.

We welcome people all ages, genders and backgrounds – including Aboriginal and Torres Strait Islander peoples, people with disability, LGBTQIA+ communities, and refugees. We’re a Disability Confident Recruiter, committed to making our hiring process and workplace inclusive and barrier-free. We’re also working hard to remove bias and build a gender-equitable experience for everyone who joins us. If you’ve got questions about accessibility, reach out to our Diversity & Inclusion team at [e-mail] or on 03 8737 9415.