Principal Software Engineer – Backend Platforms & Service Domains

We solve complex engineering challenges to create faster, smarter and more personalised customer journeys, helping business customers access the funding they need with greater speed, transparency and confidence.

As part of this team, you'll help build scalable, cloud-native platforms that support millions of customer interactions every year.

Working alongside talented engineers, architects, product specialists and business leaders, you'll shape the future of business lending through innovative technology, modern engineering practices and customer-centric design.

The solutions we deliver have a direct impact on businesses across Australia, powering growth, supporting investment and helping communities thrive.

This is an opportunity to work on meaningful technology at scale while contributing to one of the most significant digital transformations in Australian banking.

We’re interested in hearing from people who:

• Have deep experience designing, building, and operating large-scale backend platforms and distributed systems, with end-to-end ownership across architecture, delivery, reliability, and operational excellence.
• Are recognised technical leaders in domain-driven design, service decomposition, and platform modernisation, with a proven track record transforming complex legacy environments into scalable, cloud-native service ecosystems.
• Bring strong expertise across AWS, microservices, APIs, event-driven architectures, Kafka, EventBridge, serverless technologies, and modern integration patterns that support high-volume, business-critical workloads.
• Think platform-first, establishing engineering standards, architectural guardrails, reusable frameworks, developer tooling, and platform capabilities that accelerate delivery and create leverage across multiple engineering teams.
• Champion engineering excellence through DevSecOps, CI/CD, automated testing, observability, SRE practices, resilience engineering, and secure-by-design principles.
• Remain highly hands-on, contributing directly to solution design, coding, code reviews, technical decision-making, and the resolution of complex performance, scalability, and reliability challenges.
• Demonstrate full-stack and full-cycle engineering capability, with a pragmatic understanding of how backend platforms, user experiences, data, infrastructure, and operational concerns come together to deliver customer value.
• Have experience leveraging AI-powered engineering practices, automation, and developer productivity tooling to improve engineering effectiveness, software quality, and delivery outcomes at scale.
• Influence engineering strategy beyond their immediate team, mentoring senior engineers and technical leaders while driving a strong culture of ownership, accountability, continuous improvement, and "you build it, you own it" engineering.

Tech skills

We don't expect you to know everything, but experience in several of the following will set you up for success:

• Back End: C#, .NET Core, Python, Java
• Front end: React, Next.js
• Architecture: Distributed Systems, Microservices, Domain Driven Design, Event-Driven Architecture