Mō te tūranga | About the Role
The Senior Data Engineer is responsible for designing, developing and maintaining high quality data solutions, with a strong emphasis on Java engineering within the Data Platforms and AI team. This role leads the development of scalable, secure and high performing data platforms, leveraging Java and related technologies to support Westpac New Zealand’s innovative banking products and services. The Senior Data Engineer collaborates with cross functional teams to deliver robust data pipelines, streaming solutions and APIs, ensuring data is managed effectively and supports business decision making. By adopting agile, DevOps and cloud practices, this role drives continuous improvement and contributes to Westpac’s commitment to a customer centric, future focused organisation.
Nā tāu rourou | What will you bring?
• Strong hands-on experience with Snowflake, including developing, optimising, and operating modern cloud-based data warehouses.
• Practical experience with dbt (Data Build Tool) for data transformation, ELT development, and analytics engineering.
• Advanced Python development skills with proven experience building data solutions on modern cloud data platforms.
• Strong SQL development expertise, including query optimisation, performance tuning, troubleshooting, and complex data transformations.
• Experience using Apache Spark (PySpark/Spark SQL) for large-scale data processing and distributed computing.
• Proven experience designing, building, and maintaining scalable and reliable data pipelines.
• Experience building, scheduling, and orchestrating workflows using Apache Airflow.
• Strong understanding of data warehousing, data modelling, and modern data architecture principles.
• Experience developing and delivering cloud-based data solutions using Snowflake, dbt, Python, SQL, and Azure.
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
Applications close:
11 October 2026Skills Required
- Strong hands-on experience with Snowflake, including developing, optimising, and operating modern cloud-based data warehouses.
- Practical experience with dbt for data transformation, ELT development, and analytics engineering.
- Advanced Python development skills with proven experience building data solutions on modern cloud data platforms.
- Strong SQL development expertise, including query optimisation, performance tuning, troubleshooting, and complex data transformations.
- Experience using Apache Spark, PySpark, or Spark SQL for large-scale data processing and distributed computing.
- Proven experience designing, building, and maintaining scalable and reliable data pipelines.
- Experience building, scheduling, and orchestrating workflows using Apache Airflow.
- Strong understanding of data warehousing, data modelling, and modern data architecture principles.
- Experience developing and delivering cloud-based data solutions using Snowflake, dbt, Python, SQL, and Azure.
Westpac Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Westpac and has not been reviewed or approved by Westpac.
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Leave & Time Off Breadth — Extensive paid and unpaid leave options span wellbeing leave, Culture/Lifestyle/Wellbeing days, purchased leave up to 12 weeks, career breaks, and various specialized leaves. This breadth supports work-life balance and accommodates a wide range of personal circumstances.
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Parental & Family Support — Parental provisions include 16 weeks full pay (or 32 at half pay) for primary carers, four weeks for support carers, and continued superannuation during unpaid parental leave. Additional supports cover domestic and family violence leave, Family Pathways leave, and grandparental leave.
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Wellbeing & Lifestyle Benefits — Wellbeing resources include counselling and coaching services, workplace mental health training, free nutrition advice, and health insurance access with pre‑existing conditions covered if joined promptly. Financial and lifestyle perks include banking discounts for employees and families and the myDiscounts program.
Westpac Insights
What We Do
Westpac is Australia’s oldest bank and company, one of four major banking organisations in Australia and one of the largest banks in New Zealand. We provide a broad range of banking and financial services in these markets, including consumer, business and institutional banking and wealth management services. We also have offices in key financial centres around the world including London, New York, Hong Kong and Singapore. Westpac Group's portfolio of financial services brands and businesses is focused on our vision, which is "To be one of the world’s great service companies, helping our customers, communities and people to prosper and grow.”
