Job Description

What’s the Role:

The Principal Security Engineer is a senior technical authority, accountable for the development, delivery and operation of enterprise‑scale application security capabilities across the Westpac Group. This role owns and maintains strategic application security platforms and services and provides expert leadership across application security controls and capability. The role ensures application security solutions remain compliant, effective, resilient and available to the developer community, while enabling secure software delivery at scale across a complex and regulated technology environment.

Key Responsibilities:

• Act as a principal hands-on technical authority for application security, providing deep expertise across modern application security controls at enterprise scale.
• Design, develop and deliver application security solutions spanning static application security testing, software composition analysis, secrets management, container security and software supply-chain security.
• Own, operate and maintain application security platforms and services, ensuring they are compliant, effective, resilient and highly available to the developer community.
• Lead the continuous improvement and operational management of application security tooling, ensuring scalability, sustainability and fitness for use across Group development platforms.
• Partner with engineering and platform teams to integrate application security controls into developer workflows, enabling automated and repeatable security outcomes.
• Define and deliver reusable application security patterns, guardrails and reference implementations that enable consistent adoption with minimal developer friction.
• Drive automation-led vulnerability identification, remediation and prevention at scale, reducing systemic and repeat security issues across the SDLC.
• Deliver application-focused security education and enablement for developer teams, translating real-world threats and findings into practical, buildable guidance.
• Experience in application security, including secure software development practices and vulnerability management
• Background in security solution engineering and solution design within complex environments
• Strong software development experience, with the ability to work closely with engineering teams
• Exposure to or interest in AI and agentic development capabilities
• Demonstrated service ownership, including accountability for outcomes and continuous improvement
• Ability to act as a subject matter expert, providing technical guidance and direction
• Strong technical communication skills, able to translate complex concepts for varied audiences
• Experience supporting developer education and enablement through guidance, standards, or tooling

What do I need?

• Experience in application security, including secure software development practices and vulnerability management
• Background in security solution engineering and solution design within complex environments
• Strong software development experience, with the ability to work closely with engineering teams
• Exposure to or interest in AI and agentic development capabilities
• Demonstrated service ownership, including accountability for outcomes and continuous improvement
• Ability to act as a subject matter expert, providing technical guidance and direction
• Strong technical communication skills, able to translate complex concepts for varied audiences
• Experience supporting developer education and enablement through guidance, standards, or tooling

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

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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