Senior Data Scientist

Mō te tūranga | About the Role

Step into a role where your technical expertise shapes real outcomes. You’ll turn complex datasets into clear, actionable insights that power bank‑wide strategy. From building sophisticated calculators and models to optimising existing processes, you’ll be hands‑on with the tools and code that drive decision‑making across the WNZL portfolio.

You’ll work deeply across data domains, interpreting patterns, solving tough business problems, and designing scalable, reusable data assets that lift the bank’s capability. Alongside your technical contribution, you’ll also support and mentor other data professionals, helping them deliver high‑quality, well‑engineered solutions.

If you love using data to solve meaningful challenges and want to influence how the bank thinks, builds and innovates, this is where you’ll make your mark.

Nā tāu rourou | What will you bring?

• 5+ years’ experience applying advanced analytics and data science techniques to deliver meaningful business outcomes in complex environments.

• Strong experience in at least one analytical programming environment (e.g. Python, R, SQL), with the ability to work across multiple tools and platforms.

• Experience working with SAS or other enterprise analytics platforms, with an openness to transitioning to modern, cloud‑based analytics tooling over time.

• Comfortable working with large, complex and imperfect datasets, applying sound analytical judgement to generate high‑quality insights.

• Demonstrated ability to confidently lead conversations with stakeholders at all levels to gather requirements, align expectations, and drive outcomes.

• Experience using source control and collaborative development practices (e.g. Git).

• Proven ability to build strong relationships with stakeholders, translating analytical outcomes into clear, actionable recommendations.

• Strong verbal and written communication skills, including the ability to present complex concepts to non‑technical audiences.

• Knowledge of the financial services industry, including familiarity with retail and/or business banking products, performance metrics, and regulatory considerations.

• A demonstrated growth mindset and willingness to embrace new technologies, tools, and ways of working.

• Tertiary qualification in a relevant quantitative discipline (e.g. statistics, mathematics, data science, engineering, economics, computer science).

 
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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