Principal Software Engineer – AWS Cloud Modernisation Lead

Commonwealth Bank; Western Australia; On-site; AUD 180,000 - 260,000; Full time

Job summary

Commonwealth Bank in Perth/Western Australia is seeking a Principal Software Engineer to lead enterprise integration and cloud-native modernization efforts. You will shape target architectures and establish reusable capabilities while guiding multiple squads through re-platforming decisions.

The role demands deep AWS knowledge, strong API and event-driven architecture skills, and the ability to drive security, resilience and operational excellence across backend systems.

Qualifications

• Significant experience designing or modernising large-scale integration, distributed systems or enterprise platform capabilities.
• Deep knowledge of AWS and cloud-native architecture, including managed and serverless services.
• Understanding API design, event-driven architecture, enterprise messaging, streaming and asynchronous processing.
• Led major platform modernisation or replatforming initiatives while maintaining service continuity.
• Design for security, resilience, scalability, observability and operational excellence.
• Comfortable working primarily across backend engineering and architecture.
• Can work with .NET Core environments or have strong experience in another modern language with openness to .NET.
• Combine thought leadership and influencing skills with the technical depth to challenge designs and guide implementation.

Responsibilities

• Set the technical direction and target architecture for enterprise integration and communications capabilities.
• Shape modern patterns across APIs, event-driven architecture, messaging, streaming and asynchronous processing, with clear guidance on when each approach should be used.
• Lead the replatforming of critical capabilities to AWS using appropriate cloud-native, managed and serverless services.
• Establish reusable capabilities that reduce point-to-point integration, duplication and bespoke engineering.
• Define engineering standards across security, resilience, observability, scalability and developer experience.
• Create pragmatic migration and transition patterns that protect critical services while legacy platforms are progressively replaced.
• Partner with engineering teams, architects and other Principal Engineers to align solutions with the broader technology landscape.
• Remain technically hands-on enough to validate designs, explore new capabilities and solve complex engineering problems.

Skills

AWS cloud

Enterprise integration

Distributed systems

API design

Event-driven architecture

Security

Backend engineering

Tools

NET Core

Job description

Commonwealth Bank in Perth/Western Australia is seeking a Principal Software Engineer to lead enterprise integration and cloud-native modernization efforts. You will shape target architectures and establish reusable capabilities while guiding multiple squads through re-platforming decisions.

The role demands deep AWS knowledge, strong API and event-driven architecture skills, and the ability to drive security, resilience and operational excellence across backend systems.