Senior Quantitative Analyst, Enterprise Models

You’ll join Westpac’s independent Model Risk team, where you’ll help review and challenge how enterprise‑wide models are designed, built and used across the Group. These models support critical areas such as capital, funding, liquidity, operational risk, conduct, compliance and financial crime.

In this role, you’ll carry out hands‑on model validations, looking closely at how models work in practice, from underlying logic and data through to implementation and documentation. You’ll work closely with model owners, risk partners and senior stakeholders across the bank, providing practical insights that support stronger risk management and regulatory confidence.

You’ll also help uplift validation approaches by contributing to tools, frameworks and, where needed, building challenger models to test and improve outcomes.

This is a 12‑month max-term contract, based in Sydney or Melbourne, with flexible work arrangements available.

To succeed in this role, you’ll bring strong analytical thinking and a practical approach to model risk, along with:

• Experience developing, reviewing or analysing quantitative or mathematical models.
• Confidence working with data and programming tools such as SQL, Python, R or SAS.
• The ability to clearly document findings and explain complex concepts to varied audiences.
• Strong critical thinking skills, with a constructive mindset when challenging assumptions.
• The ability to work independently while collaborating effectively with diverse stakeholders.

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