Senior Engineer Data and AI

Westpac Group; Sydney; Hybrid; AUD 140,000 - 190,000; Full time

Benefits offered by this job

Flexible work arrangements

Leave options: Culture, Lifestyle and/

Learning and development opportunities

Westpac volunteering initiatives

Job summary

Westpac is seeking a Senior Engineer to lead engineering outcomes across squads, balancing design, code and production reliability. You will provide hands-on technical leadership, shape decisions, and mentor others while ensuring security, scalability and operability.

You will work in a hybrid Westpac Technology environment, contributing across web/mobile, APIs, data pipelines, cloud services and shared foundations. Location in Sydney, with flexible arrangements.

Qualifications

• Deep hands-on engineering capability in at least one stack.
• Confidence across design, data, CI/CD, security and observability.
• Sound judgement on migration, concurrency and failure recovery.
• Ability to create risk-aligned evidence through testing.
• Experience operating production systems with monitoring and incident response.
• Security and privacy mindful approach with accessibility and regulatory awareness.
• Experience coaching engineers through pairing and reviews.

Responsibilities

• Lead complex squad-level engineering outcomes through practical implementation and judgement.
• Clarify ambiguous problems and sequence work to deliver value safely.
• Improve service contracts and design for distributed failure and safe deployment.
• Review technical changes and provide clear guidance on acceptance or rejection.
• Foster team capability through documentation, pairing and mentoring.
• Help teams use shared platforms and tools instead of bespoke solutions.

Skills

Hands-on engineering

System design

Production experience

Coaching engineers

Communication

Technical judgement

Tools

AWS

Azure

GCP

Kubernetes

Terraform

Job description

Create your best future and join Westpac as a Senior Engineer

What's the role?

Ready to lead complex engineering outcomes while staying close to design, code and production?

Join Westpac as a Senior Engineer and help deliver safe, reliable and maintainable technology across Westpac's Technology teams.

You will provide hands-on technical leadership within a squad or bounded product area while demonstrating your expertise, judgement and coaching skills. Depending on the team, your work may include customer-facing web or mobile experiences, APIs and distributed services, data products and pipelines, AI-enabled capabilities, colleague tools, contact centre platforms, cloud services or shared engineering foundations.

You will shape ambiguous work, make and explain consequential technical decisions, implement high-value changes, and remain accountable for production outcomes. You will help the squad balance delivery speed with security, resilience, accessibility, operability and long-term sustainability.

You will also raise the capability of others through constructive design and code reviews, pairing, mentoring, clear documentation and incident learning. This is a technical contributor role. Formal people leadership may apply only where stated for a specific vacancy.

This is a hybrid role within Westpac Technology. Opportunities may be available across Westpac's Technology teams. Location and working arrangements will be confirmed for each vacancy.

What do I need?

• Deep hands-on engineering capability and sound code-quality judgement in at least one relevant engineering stack, with experience delivering and supporting production technology through its full lifecycle.
• Confidence working across service or interface design, data, distributed failure, automated testing, continuous integration and delivery, security and observability.
• Sound judgement with timeouts, retries, backoff, idempotency, concurrency, consistency, compatibility, migration and failure recovery, or equivalent concerns in your engineering domain.
• Experience diagnosing imperfect systems, identifying the material issue and implementing proportionate improvements rather than defaulting to broad rewrites.
• The ability to create risk-aligned evidence through unit, integration, component, contract, end-to-end, performance or resilience testing as appropriate.
• Experience operating technology in production, including logging, metrics, traces, alerts, dashboards, incident response, recovery and reducing recurring operational toil.
• A security, privacy and risk-aware approach, with attention to secure defaults, accessibility, customer outcomes and regulatory obligations.
• Experience coaching engineers through pairing, review and practical problem-solving, using specific and respectful feedback to increase their confidence and ownership.
• Clear and inclusive communication. You can explain technical choices, invite challenge, adapt to different audiences and work effectively across disciplines.

Experience that may be useful

You do not need experience in every area below. We encourage you to apply if your strengths are relevant or transferable and you are interested in developing domain-specific knowledge.

• Digital engineering, including web or mobile platforms, design systems, accessibility, customer identity, APIs or high-volume customer experiences.
• Data and AI engineering, including data platforms, streaming or batch pipelines, analytics, machine learning, generative AI, responsible AI controls, model operations, evaluation or observability.
• Contact centre technology, including colleague tools, interaction platforms, workflow automation, telephony, conversational experiences or customer-service integration.
• Cloud-native engineering using AWS, Azure, GCP, Kubernetes, Terraform or equivalent technologies, including networking, identity, secrets and platform services.
• Using AI-assisted engineering tools responsibly, including critically reviewing generated designs and code, validating outputs and retaining human accountability.
• Working in a regulated, high-availability or large enterprise environment.

How you'll make an impact

• Lead complex squad-level engineering outcomes through practical implementation, design judgement and influence.
• Clarify ambiguous problems, identify material constraints and sequence work to deliver value safely.
• Improve service, interface or data contracts and make trade-offs explicit, proportionate and reversible where possible.
• Design for distributed failure, production visibility, safe deployment, rollback and recovery.
• Review technical changes, including AI-generated work, and clearly explain what should be accepted, changed or rejected.
• Remove unnecessary complexity and help prevent recurring classes of defects or incidents.
• Create clear decisions, patterns and evidence so the squad can continue independently rather than relying on a single expert.
• Help the team use shared platforms and recommended tools instead of building reusable solutions

We're obsessed with becoming our customers' number one banking partner for life, and we're looking for people who want to help us achieve that goal. In return, we're committed to making Westpac a great place to work. Here are some of the ways we support our people:

• Special offers on banking products and discounts from leading brands, including eligible employee-only mortgage rates.
• Flexible work arrangements and a range of leave options, including Culture, Lifestyle and Wellbeing leave.
• Learning and development opportunities to deepen your craft and grow your career within the bank.
• Opportunities to support the community through Westpac volunteering initiatives.

Create your future today

We know capable people do not always meet every listed requirement. If this role interests you and your experience is relevant or transferable, we encourage you to apply.

We're committed to creating a supportive and inclusive workplace. We welcome applications from people of all ages, cultural backgrounds, genders, abilities and ways of thinking. We provide additional support for veterans, Aboriginal and Torres Strait Islander peoples, and neurodivergent people.