Principal Software Engineer – Financial Crime Technology
Location: Sydney/Melbourne
You're a deeply technical engineering leader who thrives on solving high-stakes, complex problems. We're modernising critical financial crime platforms and building cloud-native, AI-enabled systems that protect millions of Australians.
We aim to disrupt sophisticated criminal networks and strengthen the integrity of Australia's financial system. Nearly half of all Australian transactions flow through our systems, and within Corporate Technology we are rebuilding and modernising the platforms that power fraud detection, financial crime prevention, regulatory operations and risk systems across Retail, Commercial and Institutional Banking. This is a multi-year transformation—moving from legacy monolithic systems to modern, cloud-native architectures while scaling machine learning models and real-time intelligence systems to production.
What You'll Do
* Architect and build cloud-native systems (AWS) supporting fraud and financial crime detection
* Lead greenfield platform builds while pragmatically modernising legacy systems
* Guide teams (6–8 engineers) through full lifecycle delivery
* Embed secure-by-design and DevSecOps practices from day one
* Scale machine learning models into reliable, production-grade systems
* Collaborate across data, AI and platform engineering teams
* Mentor engineers and uplift engineering standards across crews
What Will Set You Apart
* Have built and operated large-scale distributed systems in production
* Have strong AWS cloud expertise and understand modern infrastructure patterns
* Have experience productionising AI/ML models (not just building prototypes – highly regarded)
* Are comfortable balancing technical debt with strategic evolution
* Can influence across domains and secure alignment on technical direction
Tools, Languages and Frameworks
* Experience building scalable, high-performance, secure APIs
* Solid experience building backend applications using Java, .NET, Python, Golang or similar languages
* Hands‐on experience developing and scaling full‐stack applications using modern JavaScript/TypeScript frameworks such as React, Next.js, Node.js, and NestJS
* Experience building cloud-native applications on AWS
* Familiarity with full‐cycle engineering, including test automation (unit, integration and end‐to‐end tests)
* Proficiency with relational databases (SQL) and NoSQL databases such as AWS DocumentDB
Why This Role Is Different
* You'll work on systems that directly protect victims of financial crime
* You'll operate at national scale
* You'll influence architecture in one of the bank's most critical domains
* You'll partner with senior technical leaders across the Group
* Your work blends greenfield innovation with high-stakes operational resilience
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