Principal Engineer, Data & AI Platforms

Westpac Group; Sydney; Hybrid; AUD 180,000 - 260,000; Full time

Benefits offered by this job

Flexible work

Leave options

Learning & development

Volunteer programs

Diversity & inclusion

Job summary

Westpac Group in Sydney is seeking a Principal Engineer to tackle complex cross‑domain engineering challenges and deliver safer, simpler and more reliable technology across Shared Data and AI, Digital, and Contact Centre platforms. You will combine deep expertise in at least one engineering domain with broad systems thinking to influence multiple squads and reduce risk across services, data and APIs.

You will lead through technical authority, guide important design decisions, validate uncertain

Qualifications

• Demonstrated experience solving complex engineering problems across services, platforms or data domains.
• Broad knowledge of distributed systems, integration, data, security and production operations.
• Strong design judgement for APIs, events, and asynchronous workflows.

Responsibilities

• Clarify complex problems and guide key design decisions across squads.
• Prototype high-risk elements to validate feasibility and security.
• Create reusable patterns and boundaries to enable autonomous squad delivery.
• Partner with engineers, product, design, data, architecture, cyber and risk teams to raise production readiness.

Skills

Complex engineering problems

Distributed systems

APIs design

Cloud platforms

Security & risk mindset

Coaching engineers

Clear communication

Tools

Git

CI/CD

Containers

Cloud services

Terraform

Observability

Job description

Westpac Group in Sydney is seeking a Principal Engineer to tackle complex cross‑domain engineering challenges and deliver safer, simpler and more reliable technology across Shared Data and AI, Digital, and Contact Centre platforms. You will combine deep expertise in at least one engineering domain with broad systems thinking to influence multiple squads and reduce risk across services, data and APIs.

You will lead through technical authority, guide important design decisions, validate uncertain