Principal Software Engineer – Cloud-Native Backend Platform

Commonwealth Bank

City of Melbourne

On-site

AUD 180,000 - 240,000

Full time

14 days+

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Job summary

Commonwealth Bank is seeking a Principal Software Engineer within the Digital & Assisted Lending Crew of Business Banking Technology. You will shape backend platforms, APIs, and distributed systems, owning architecture, delivery, and reliability at scale.

Lead technical strategy across service domains and platform modernization, while mentoring engineers and championing secure-by-design practices. The role combines hands-on coding with strategic leadership, driving engineering excellence and

Qualifications

Experience designing, building, and operating large-scale backend platforms.
Technical leadership across platform architecture and APIs.
Proven ability in cloud-native, distributed, service-oriented architectures.
Proficiency with AWS, microservices, event-driven patterns.
Hands-on coding and architectural decision-making responsibilities.
Mentoring senior engineers and driving engineering culture.

Responsibilities

Lead architecture and strategy for backend platforms and APIs in lending tech.
Own delivery, reliability, and security across distributed systems.
Collaborate with product, architecture, and engineering leaders to shape scalable solutions.
Drive AI-enabled engineering practices as an accelerator, not a sole focus.