Westpac New Zealand Tech Stack

New Zealand's largest retail and commercial bank with 160+ year history

Banking New Zealand 5,001–10,000 employees Public Company

Westpac New Zealand operates a large, geographically distributed banking operation serving ~25% of New Zealand's population across retail, business, and agribusiness segments. The tech stack reveals a hybrid-legacy posture: heavy Microsoft enterprise (Exchange, 365, Graph API), traditional analytics (SAS, SQL, R), and modern web (React, Redux, Kubernetes, Docker). Recent adoption of Kotlin signals Java modernization efforts, while active pain points around legacy mobile apps, regulatory reporting, and platform resilience suggest the organization is mid-transformation—managing compliance-heavy workloads while building cloud-native capability.

Tech Stack 94 technologies

Core StackMicrosoft Exchange SAS Python JavaScript React Redux Jest Webpack Docker Jenkins Bitbucket Selenium Kubernetes Jira Confluence Java ServiceNow Microsoft 365 Microsoft Graph API Exchange Server PowerShell Excel SQL R Redux-Saga SASS HTML5 React Testing Library Git Sass+63 more

AdoptingKotlin

What Westpac New Zealand Is Building

◆Challenges

Modernising legacy mobile apps
Strengthening governance
Regulatory reporting
Meeting regulatory requirements
Ensuring data integrity
Migration between platforms
Platform resilience and security
Maintaining accurate customer profiles
Handling challenging customer conversations
Improving reporting accuracy

▲Active Projects

Credit risk model development for retail and non-retail portfolios
Hybrid messaging solution implementation
Rwa forecasting and stress testing
Corporate hosting events
Events strategy execution
Single view of wnzl events
Automating treasury disclosures
Enhancing daily p&l reporting
Establishing governance framework
Aml/cft policy development

Hiring Activity

Steady95 roles · 30 in 30d

Department

Finance

Engineering

Support

Ops

Product

Sales

Communications

Legal

Seniority

Mid

Manager

Senior

Junior

Lead

Principal

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About Westpac New Zealand

Westpac New Zealand Limited is one of the country's largest banks, serving personal, business, and agribusiness customers through nearly 100 physical branches and over 350 ATMs, plus digital channels. The company was established in 1861 as the Bank of New South Wales, rebranded to Westpac in 1982, and grew through acquisitions of the Commercial Bank of Australia and Trust Bank to form the current entity. The organization provides a full range of banking services: day-to-day accounts, home loans, personal and business lending, credit cards, insurance, and institutional banking. With 5,000–10,000 employees, the company maintains significant compliance and risk-management functions alongside technology and customer-facing operations.

HeadquartersNew Zealand

Company Size5,001–10,000 employees

Hiring MarketsNew Zealand, United States, India, Sri Lanka, South Africa, United Kingdom

Frequently Asked Questions

What tech stack does Westpac New Zealand use?

Microsoft 365, Exchange, and Graph API for enterprise collaboration; SAS, SQL, Python, and R for analytics; React, Redux, and JavaScript for web frontends; Docker, Kubernetes, and Jenkins for infrastructure; and Java as the primary backend language (now adopting Kotlin for modernization).

Is Westpac New Zealand hiring engineers?

Yes. Engineering has 21 active roles across mid-level (largest cohort), manager, senior, lead, and junior levels. The company is hiring in New Zealand, United States, India, Sri Lanka, South Africa, and United Kingdom.

What is Westpac New Zealand working on?

Current priorities include credit risk model development, hybrid messaging implementation, RWA forecasting and stress testing, automating treasury disclosures, enhancing P&L reporting, and establishing governance frameworks for regulatory compliance.