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Senior AI Security Engineer

Westpac Group -
Sydney NSW

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Job Details

Full-time

Qualifications

CI/CD
Law
Master's degree
AI

Full Job Description

What’s the Role:

As a Senior AI Security Engineer, you will play a hands‑on role in building and embedding the security controls, guardrails and tooling required to support the safe use of AI across Westpac. You will develop production‑grade code and reusable patterns to protect AI‑powered applications and agent‑based workflows, while working across application security and AI engineering to ensure solutions are secure by design. The role focuses on enabling the adoption of technologies such as Large Language Models (LLMs) and autonomous agents within a complex and highly regulated environment.

Key Responsibilities:

Design and implement security guardrails for AI and agent‑based applications, including controls for input/output filtering, prompt injection and agent permissions
Develop production‑quality Python code for security controls, middleware and testing across LLM applications, RAG pipelines and multi‑agent systems
Build reusable security patterns, libraries and reference implementations to support secure AI development
Perform threat modelling and adversarial testing, covering risks such as data leakage, model evasion, prompt injection and agent misuse
Embed automated security checks into AI/ML pipelines, including supply chain validation, dependency analysis and runtime monitoring
Work with data, platform and engineering teams to integrate security into AI workflows and contribute to standards aligned with industry frameworks

What do I need?

Proven experience implementing security guardrails in AI and agent‑based applications, including prompt safety, data protection and agent control mechanisms
Experience building and delivering reusable AI security libraries, patterns and reference implementations used by engineering teams
Hands‑on experience integrating automated security testing and validation into CI/CD and ML pipelines
Demonstrated experience identifying and reducing AI‑related security risks through prevention, detection and control implementation
Experience developing or contributing to AI security standards, guidance and enablement materials for engineering teams
Strong background in AI/LLM security, Python‑based security engineering, application security and threat modelling, with exposure to agentic frameworks, ML pipeline security and cloud platforms

Why join us?

We’re obsessed with becoming our customers' #1 banking partner for life and we’re looking for people who are passionate about helping us achieve that goal. In return, we’re committed to making Westpac the best place to work in the country. Here are just a few of the ways we’re already doing that:

Special offers on banking products and discounts from top brands, including generous employee only mortgage rates!
Flexible work arrangements to help you achieve a greater work/life balance, and a variety of leave options including Culture, Lifestyle and Wellbeing leave.
Tailored learning and development opportunities to help your grow your career within the bank.
Lots of opportunities to ‘give back’ to the Community by getting involved in our many volunteering initiatives.

Create your future today

To get started, simply click on the APPLY or APPLY NOW button

We’re all about creating a supportive and inclusive community. We welcome everyone no matter your age, gender, background, or abilities. We also provide additional support to welcome our veterans, Indigenous Australians and neurodiverse community.

If you need any adjustments during the recruitment process, you can find out more information and additional contact details by visiting the "People with Disability and/or needing Accessibility Requirements" page on our website .

Apply Now

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