Help us deliver like never before

We’re looking for a Cyber Security Specialist (SIEM Engineering) to join our diverse, talented and innovative digital technology team. Together, we design, build and maintain products, services and experiences that Australians love and trust, while delivering a sustainable future for Australia Post — and you could be part of that.

We’re empowered to deliver for our teams and delight our customers. You’ll be supported by an inclusive, collaborative culture that trusts people to do their best work and embraces modern technologies and ways of working — it’s an unexpectedly dynamic environment that feels more like a start‑up than a 213‑year‑old icon.

What you’ll deliver for us

As a 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 will:

• 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 who enjoys working deep in SIEM engineering and detection. You’re comfortable operating in complex environments, collaborating across teams, and translating security requirements into practical technical solutions.

You’ll bring:

• 4+ years’ experience working with SIEM technologies
• 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
• Automation using platforms like SOAR, Logic Apps etc
• DevSecOps and CI/CD pipelines
• Detection‑as‑Code (ARM / Bicep)
• Scripting (e.g. Python, SQL)
• Microsoft Azure / Sentinel or Industry certifications such as CISSP or GIAC (highly regarded)

How we’ll deliver to 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
• Hybrid ways of working – Melbourne‑based

We’re delivering together

At Australia Post, we acknowledge the Traditional Custodians of the land on which we operate, live and gather as employees.

We believe our business should reflect the diverse communities we operate in and are proud to be an inclusive workplace for people from all walks of life. We encourage applications from people of all ages, genders and backgrounds including Aboriginal and Torres Strait Islander peoples, People with Disability, LGBTQIA+ and Refugees.

We are one of the largest organisations in Australia to successfully achieve Disability Confident Recruiter status. We are committed to providing an inclusive and barrier-free recruitment process and workplace for those living with a disability and are committed to reviewing and removing bias in our processes to create a gender-equitable recruitment experience and workplace. If you have any questions about accessibility, please contact our Diversity & Inclusion team on inclusivecareers@auspost.com.au