Westpac Tech Stack

Australia's largest bank modernizing core systems with AI and cloud automation

Banking Sydney, NSW 10,001+ employees Founded 1817 Public Company

Westpac is Australia's oldest financial institution, serving over 200 years of customer history across personal, business, corporate, and institutional banking. The tech stack reveals a bank mid-transformation: legacy systems (Teradata, Oracle Database, SWIFT) coexist with cloud-native infrastructure (Azure, Kubernetes, Docker), while active adoption of Terraform, Jenkins, and GitHub Actions signals infrastructure-as-code maturity. Hiring velocity is accelerating across engineering (24 roles) and data (6 roles), with active projects spanning CI/CD automation, RPA bot development, and gen-AI agentic platforms—indicating a shift from manual controls toward automated compliance and AI-driven customer acquisition.

Tech Stack 110 technologies

Core StackInformatica Kafka Python TensorFlow PyTorch scikit-learn RAG Java SWIFT Oracle Database Playwright Azure DevOps Jenkins Selenium Cypress JavaScript AWS Node.js React Angular Vue Excel Word Teradata Azure Machine Learning Synapse Azure AI Services Azure SQL REST Assured+74 more

AdoptingTerraform Jenkins GitHub Actions Docker Kubernetes Informatica IDMC

ReplacingHadoop

What Westpac Is Building

◆Challenges

Compliance and risk management
Control gaps
Protecting customers from financial crime
Home loan settlement targets
Acquiring new customers
Manual or ineffective controls
Customer acquisition and retention
Manual regression testing
Pipeline issues
Complex migrations

▲Active Projects

Ci/cd pipeline integration for automated tests
Automated test suite for key banking journeys
Scalable automation frameworks
Home loan referral uplift
Data migration as a service (dmaas)
Westpac png community initiatives
Rpa bot development
Gen-ai training program
Ai‑driven agentic development platform
Idmc pipeline automation

Hiring Activity

Accelerating140 roles · 65 in 30d

Department

Finance

Sales

Engineering

Ops

Data

Marketing

Legal

Seniority

Senior

Manager

Junior

Mid

Lead

Intern

Director

Principal

Notable leadership hires: Lead Mob, Lead Our Mob, Quality Engineering Lead, Performance Test Lead, Relationship Director

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About Westpac

Westpac Banking Corporation is Australia's oldest bank (founded 1817) and operates as a public company with 10,000+ employees headquartered in Sydney. The institution serves personal, business, corporate, and institutional customers across Australia and Papua New Guinea, with specialized offerings in agribusiness, migrant banking, and private wealth. Core operations span retail lending (home loans, deposits), commercial and institutional banking, and managed investments. The bank maintains regulatory responsibilities under Australian banking and credit licensing frameworks while managing customer protection initiatives (SaferPay, SafeCall) and climate commitments (Equator Principles signatory).

HeadquartersSydney, NSW

Company Size10,001+ employees

Founded1817

Hiring MarketsPapua New Guinea, Australia

Frequently Asked Questions

What is Westpac's tech stack?

Westpac uses Teradata, Oracle Database, SWIFT, and Informatica for core systems; Azure, Kafka, Synapse, and Python for data and ML platforms; and Jenkins, Azure DevOps, Docker, Kubernetes for modern deployment. The bank is adopting Terraform, GitHub Actions, and Informatica IDMC while migrating off Hadoop.