Software Engineer - Data

Mō te tūranga | About the Role

We are seeking a Software Engineer - Data to join our Product Engineering team and support the delivery of secure, scalable, and reliable data driven software solutions across Westpac. This role plays an important part in enabling trusted data access, improving data quality, and helping the business make better, more informed decisions.

You will work end to end across the software development lifecycle while contributing to engineering standards, automation, and continuous improvement. This role is key to strengthening our data platforms and supporting analytics, regulatory reporting, customer insights, and digital product experiences.

Ko tō mahi | What you’ll do

• Design, develop, test, and maintain data driven software solutions such as data pipelines, services, APIs, and platform components.

• Translate business, analytics, and regulatory requirements into well engineered, scalable technical solutions.

• Apply modern engineering practices such as clean code, modular design, and automated testing.

• Build and evolve integrations between core banking systems, data platforms, analytics tools, and downstream consumers.

• Support the growth of cloud based data platforms and shared data services.

• Make improvements to performance, reliability, and cost efficiency of data processing and storage.

• Ensure solutions meet Westpac standards for data quality, accuracy, security, and observability.

• Embed privacy by design, security controls, and responsible data use.

• Build monitoring, logging, and alerting that supports strong operational resilience.

• Improve engineering practices through automation, refactoring, and adoption of modern tools and patterns.

• Support technical standards, documentation, and knowledge sharing across the community.

Nā tāu rourou | What will you bring?

• Strong background in software engineering with experience in data pipelines, services, APIs, and platforms.

• Proficiency in languages such as Python, Java, or Scala.

• Experience with relational and non relational data stores, data modelling, and data integration.

• Demonstrated experience with CI/CD, automated testing, and infrastructure as code.

• Familiarity with event driven architectures, APIs, and distributed systems.

• Strong understanding of engineering principles including testability, maintainability, and observability.

• Ability to diagnose and resolve issues across multiple layers of the engineering stack.

• Understanding of data governance, data quality, and responsible data use.

• Ability to deliver high quality data solutions that meet enterprise standards.

• Reduction of defects and incidents through strong engineering controls.

• Strong communication skills and the ability to work effectively with technical and non technical teams.

• Commitment to engineering excellence, best practice, and continuous improvement.

Westpac Hei Wāhi Mahi | Working at Westpac

In addition to immersing yourself in a supportive team environment, you'll receive some great job perks and benefits including:

• 4 weeks standard holiday + 5 additional days of wellbeing leave to support you to be your best

• Additional purchased leave options up to 4 weeks per year

• Banking benefits, insurance discounts and superannuation scheme

• Growth and development – we provide opportunities for development and promote internal mobility

• Recognition - we recognise and reward our star performers

• School holiday subsidy - help you balance work and family during school holiday

• 2 Volunteer days per year

Ko mātou tēnei | Our Organisation
At Westpac, we’re working together to build a fairer and stronger New Zealand for our people, customers, and communities. For over 160 years we’ve been driven by our purpose to Create Better Futures Together.

What makes us unique are the incredible people we’re lucky enough to have walk through our doors every day. The giant ‘W’ on our building doesn’t just stand for Westpac – it says, double you. We’re a place that values, rewards and recognises individuality. Where you can be your whole self, your true self, and your best self. We’re recognised as a place where talent is developed, where passions are fuelled and where ambitions of all shapes and sizes thrive. And it all starts with you!

Tono mai ināianei! | Apply Now!

Apply today with your CV and Cover Letter. 

The people of Aotearoa, New Zealand hail from many cultures and backgrounds. At Westpac New Zealand, we draw on this enormous talent pool to cultivate a team rich in ability and empowered to reach its full potential. Our aim is to be brave challengers, celebrating our differences and relentlessly advocating for our customers. It starts with us – we believe that when we care deeply and do our best for our people, they’ll do their best for our customers. We encourage people from all walks of life to apply, including those who are neurodiverse, have chronic health conditions or disabilities – your attitude and passion are as important to us as your experience, qualifications and capabilities. 

Mahi tahi tātou, kaha ake tātou | Together Greater

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