Credit Model Validation Lead (IRB/IFRS9)

NAB; Darwin; On-site; AUD 180,000 - 230,000; Full time

Job summary

NAB is seeking an Associate Director to join the Risk Frameworks, Execution and Models Team in Australia. The role focuses on leading independent validation of IRB, IFRS9 and credit decisioning models, ensuring robust data quality, calibration and performance testing across economic cycles.

You will partner with model owners, provide credible challenge, and influence capital usage and RWA outcomes whilst supporting regulatory reviews and supervisory engagement.

Qualifications

• Previous experience in banking/financial services, model development/validation, credit risk, and/or quantitative modelling roles (developing models, extracting data), and/or governance.
• Strong statistical and economic modelling skills with coding languages essential (Python, SAS).
• Strong engagement and influencing skills with the ability to work closely with multiple stakeholders, to convey complex ideas clearly and deliver outcomes.
• Understanding of how models affect credit decisions, capital, provisioning, stress testing and scenario analysis.
• Strong written communication skills with the ability to write detailed validation reports to outline findings and model rating outcomes backed by analytic evidence.
• Openness to adopt AI tools for credit validation and thought leadership in model risk.
• Excellent strategic thinking, resilience, autonomy, and a customer-focused mindset.

Responsibilities

• Leading independent validation of IRB, IFRS9 and credit decisioning models.
• Assessing conceptual soundness of rating philosophies, data quality, calibration and performance testing across economic conditions with state-of-the-cycle assessments.
• Oversee validation of model performance through the credit life cycle, including portfolio and segment level outcomes, interaction with RWA overlays, expert judgement and management adjustments.
• Provide credible challenge where outcomes diverge from expectations and risk appetite.
• Ensure validation conclusions are reflected in capital usage and RWA outcomes, credit decisioning frameworks, limitations, overlays and monitoring requirements.
• Partner with model owners to ensure findings are remediated appropriately.
• Act as line 2 technical authority on credit model validation matters.
• Support regulatory reviews, deep dives and supervisory engagement relating to IRB models.

Job description

NAB is seeking an Associate Director to join the Risk Frameworks, Execution and Models Team in Australia. The role focuses on leading independent validation of IRB, IFRS9 and credit decisioning models, ensuring robust data quality, calibration and performance testing across economic cycles.

You will partner with model owners, provide credible challenge, and influence capital usage and RWA outcomes whilst supporting regulatory reviews and supervisory engagement.