Senior AI Engineer - Intelligence & Protection

Westpac Bank; Sydney; Hybrid; AUD 180,000 - 240,000; Full time

Job summary

Westpac Bank's AI Services unit seeks a Senior AI Engineer to own complex intelligence and protection workstreams, building production-ready products across governed data, APIs, AI workflows and human review experiences.

You will contribute to Financial Crime Prevention initiatives (Fraud, AML) and ensure traceability, safety and human authority in all decisions. Hybrid Sydney/Melbourne based with strong delivery ownership.

Qualifications

• Strong full-stack engineering across backend services, APIs, data stores and modern web apps using Go or Python, SQL, TypeScript, React and Next.js.
• Strong API, event and data-contract design including identity, entitlements, durable state, audit and recovery.
• Data engineering expertise covering lineage, quality, event time, knowledge time, corrections and purpose-based access.
• Practical graph and investigation engineering across entity resolution, typed relationships, bounded traversal and evidence paths.
• Strong AI service engineering across ML signals, LLMs, RAG, agents, evaluation, monitoring, controls and safe fallbacks.
• Domain experience has featured fraud and financial crime protection.
• Strong judgement about when rules, SQL, conventional ML, graphs or generative AI are the right solution.

Responsibilities

• Own detailed design, implementation, verification, release and operational readiness for a complex workstream.
• Build reliable contracts connecting source data, events, services, models, agents, user journeys and downstream systems.
• Maintain traceable evidence across entities, facts, signals and review outcomes.
• Ensure missing, stale, denied, incomplete and unavailable information is represented correctly.
• Implement agent boundaries using typed inputs, approved tools, access checks, limits, citations, audit and safe failure.
• Protect sensitive data through least privilege, minimisation, pseudonymisation and controlled disclosure.
• Own versioning, deployment, rollback, recovery, diagnostics, incident support and continuous improvement.

Skills

Go

Python

SQL

TypeScript

React

Next.js

API design

Data contracts

AI service engineering

Fraud/financial crime

Job description

• Financial Crime Domain Experience Sought
• Sydney or Melbourne Based / Hybrid Working
• Own complex, evidence-led AI solutions where safety, traceability & human authority matter.

Opportunity Knocks

Join AI Services as a Senior - hands-on - AI Engineer owning complex intelligence and protection workstreams.

You will build production-ready products across governed data, backend services, APIs, AI workflows and human review experiences.

The role supports business critical Financial Crime Prevention (Fraud, AML), plus employee, customer or operational decisions.

Your Core Focus

• Own detailed design, implementation, verification, release and operational readiness for a complex workstream.
• Build reliable contracts connecting source data, events, services, models, agents, user journeys and downstream systems.
• Maintain traceable evidence across entities, facts, signals and review outcomes.
• Ensure missing, stale, denied, incomplete and unavailable information is represented correctly.
• Implement agent boundaries using typed inputs, approved tools, access checks, limits, citations, audit and safe failure.
• Protect sensitive data through least privilege, minimisation, pseudonymisation and controlled disclosure.
• Own versioning, deployment, rollback, recovery, diagnostics, incident support and continuous improvement.

What you will bring

• Strong full-stack engineering across backend services, APIs, data stores and modern web applications, using technologies such as Go or Python, SQL, TypeScript, React and Next.js.
• Strong API, event and data-contract design, including identity, entitlements, durable state, audit and recovery.
• Data engineering expertise covering lineage, quality, event time, knowledge time, corrections and purpose-based access.
• Practical graph and investigation engineering across entity resolution, typed relationships, bounded traversal and evidence paths.
• Strong AI service engineering across ML signals, LLMs, RAG, agents, evaluation, monitoring, controls and safe fallbacks.
• Domain experience has featured fraud and financial crime protection.
• Strong judgement about when rules, SQL, conventional ML, graphs or generative AI are the right solution.

You will combine senior delivery ownership with specialist intelligence and protection engineering, making evidence, provenance, uncertainty and limitations clear while preserving human decision authority.

You will help deliver practical AI outcomes while applying Westpac engineering, security, privacy, Responsible AI, risk and operational resilience requirements.

Approved AI tools may support delivery, but people remain accountable for design, controls, review and production decisions.

Ready to build what matters?

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 ourwebsite.