Lead Engineer - Siebel

Westpac's UNITE program is a multi-year, business-led technology transformation initiative aimed at simplifying the bank's operations, reducing costs, and improving customer and employee experiences.

It involves consolidating systems, streamlining processes, and modernizing technology infrastructure to achieve greater efficiency and agility.

This Lead Engineer role sits within the Customer & UNITE Technology division within Westpac.

This role will act as a Siebel UCM/Oracle Customer Hub SME.

In addition, this role will also help drive the adoption of AI driven, agentic development across the Customer Domain —automating coding, testing, documentation, and change delivery while meeting the bank’s regulatory and security obligations.

About the team:

We’re a team of passionate engineers transforming our technology stack.

Our mission is to simplify, modernise, and enhance scalability, reliability, security, and compliance, establishing AI first engineering practices where intelligent agents assist—and increasingly lead—software and data development.

We work collaboratively, embrace modern technologies (Java, Python), and use agile and DevSecOps approaches to shape the future of our technology landscape.

• Design, develop, and support data integration solutions using Oracle Customer Hub (OCH / UCM)
• Solid understanding of APIs, relational databases, and enterprise-grade application development.
• Act as a subject matter expert for Oracle Customer Hub, defining standards, patterns, and best practices.
• Collaborate with Architects, Business Analysts, Project Managers, SMEs, and solution providers to contribute to accurate and timely cost estimates for design and development phases.
• Engineer for non functional excellence: reliability, security, performance, observability, and operability.
• Apply an AI first approach to automate coding, testing, data mappings, orchestration, and documentation

What do I need?

• Seven+ years of experience in Information Technology, primarily in systems development, support and maintenance
• Experience in Oracle Customer Hub (Siebel UCM) & Informatica
• Experience in systems integration
• Expert knowledge in at least one technical specialism, such as a domain or language; Java, Git, Bitbucket, Kafka
• Strong problem solving and analytical skills
• Excellent communication and teamwork skills

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 your 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.

We’re all about helping our people grow and succeed.

Whether you’re a current employee, trainee, or intern, we’re committed to your career development Check out our FAQs and internal support resources here.