Description Principal Engineer – CSGO (Data Platforms) Location: Sydney or Melbourne Based Hybrid Working Make your mark today! We’re seeking a Principal Engineer to act as the senior‑most technical authority across Customer Solutions & Group Operations (CSGO) with our Data Platforms (DP) area within Westpac. You’ll own end‑to‑end technical design and quality across enterprise batch and streaming data platforms, set engineering standards, mentor senior technologists, and act as the escalation point for complex, cross‑domain data challenges in a regulated environment. Please note that this is a hands‑on, senior individual contributor role — i.e. not a people manager or delivery manager position, however your highly developed stakeholder management and people influencing ability will be key to the role’s success - complemented with your deep technical engineering skills and expertise. Core responsibilities … Own and govern end‑to‑end data solutions across batch and real‑time streaming pipelines Define and assure architecture aligned to enterprise standards, security, risk and regulatory controls Design scalable solutions using Azure data platforms (ADLS, Synapse Spark/SQL, Event Hubs, Cosmos DB) Lead event‑driven and real‑time architectures (Kafka, Event Hubs, APIs; lambda/kappa patterns) Set and enforce standards across design, data modelling, code quality, CI/CD and DevSecOps Act as the technical escalation point for complex data integrity, reconciliation and performance issues Mentor senior engineers and uplift capability through design reviews and reusable patterns Apply Agentic AI and engineering copilots safely to accelerate delivery in regulated environments Essential Ingredients for Success … 10 years’ experience in data engineering, solution engineering or data architecture within large, complex environments Proven delivery of enterprise‑scale data and reporting platforms (regulated or financial services environments preferred) Strong hands‑on expertise in streaming and real‑time data architectures, Azure data ecosystems, SQL, data modelling and performance optimisation, enterprise data platforms (e.g. Teradata / Snowflake), and ETL / ELT tooling (e.g. Informatica) Strong architectural judgement balancing batch streaming for analytics and reporting Why join us? We’re obsessed with becoming our customers' 1 banking partner for life and we’re looking for people who are passionate about helping us achieve that goal. In return, we’re committed to making Westpac the best place to work in the country. Here are just a few of the ways we’re already doing that: Special offers on banking products and discounts from top brands, including generous employee-only mortgage rates! Flexible work arrangements to help you achieve a greater work/life balance, and a variety of leave options including Culture, Lifestyle and Wellbeing leave. Tailored learning and development opportunities to help grow your career within the bank. Lots of opportunities to ‘give back’ to the Community by getting involved in our many volunteering initiatives. Create your future today! To get started, simply click on the APPLY or APPLY NOW button. 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 our website .