Principal Software Engineer – Full Stack, React, Next.js, Node.js, .Net

Commonwealth Bank

. Shape the next generation of assisted technology and modernise platforms supporting branch, customer and colleague experiences .

Posted 10/23/2026full-timeMelbourne • AustraliaLeadWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates principal-level expertise in Full-Stack Engineering with a focus on TypeScript, React, Next.js, and .NET, while leading large-scale modernization efforts and influencing architectural direction across multiple engineering teams. Proficient in designing cloud-native, distributed systems and integrating complex APIs with a strong emphasis on secure, resilient, and observable practices.

Highest-signal resume keywords

Full-Stack Engineering ExpertiseCloud-Native System DesignIntegration Engineering ExperienceTechnical Leadership and InfluenceArchitectural Stewardship

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

TypeScriptReactNext.jsNode.js.NETAPIsCloud ComputingMicroservicesEvent-Driven ArchitectureInfrastructure as Code

Soft Skills

MentoringInfluencing Across TeamsSystems ThinkingProblem SolvingCollaboration

Tools & Technologies

AWSTerraformGitHub ActionsPrometheusGrafanaKafkaOracle PL/SQLMongoDBTurboRepoGenerative AI Tools

Industry Keywords

Cloud-NativeDistributed SystemsLegacy ModernizationObservabilitySecure-by-Design

Tech Stack

Tools & technologies

AWSCloudDistributed SystemsGrafanaJavaScriptKafkaMicroservicesMongoDBNext.jsNode.jsOraclePrometheusReactSQLTerraformTypeScript.NET

About the role

Key responsibilities & impact

Shape the next generation of assisted technology and modernise platforms supporting branch, customer and colleague experiences
Define architecture, simplify complexity and build modern services at scale
Anticipate customer, colleague and engineering needs and turn uncertainty into action
Influence across teams, mentor engineers and own the health and direction of the broader technology landscape
Build intelligent concierge experiences, agentic appointment booking, customer-intent capture, skills matching and smarter branch operations
Work across TypeScript, Next.js, APIs, .NET and AI-enabled engineering
Influence architecture, engineering practices and technical direction
Establish technical direction across multiple engineering teams
Lead large-scale modernisation of interconnected legacy environments
Raise design and engineering standards while balancing hands-on technical credibility with architectural stewardship

Requirements

What you’ll need

Principal-level expertise across React, Next.js, Node.js, TypeScript, .NET and cloud
Deep systems-thinking and end-to-end architecture experience
Full-stack engineering breadth across TypeScript, React, Next.js and Node.js, with ability to support legacy technologies
Experience designing and delivering cloud-native, distributed systems end to end
Experience with APIs, event-driven architectures, SDKs, data, CI/CD, infrastructure as code, observability, resilience and complex integrations
Ability to turn ambiguous business and domain problems into clear technical options and architecture
Experience leading safe, large-scale modernisation of interconnected legacy environments
Strong integration engineering experience, including complex APIs, authentication, identity, biometrics, NFC or hardware-to-software integration
Practical use of AI-powered engineering and agentic tools across the software lifecycle
Secure-by-design, resilience, performance optimisation, observability and operational ownership practices
Principal Engineer-level technical leadership and influence
Experience in several listed technologies, including Node.js, Express, .NET Core C#, microservices, Web APIs, React, Next.js, TypeScript, Kafka, Oracle PL/SQL, MongoDB, AWS, AWS CDK, Terraform, AWS CloudFormation, GitHub Actions, testing frameworks, GitHub, TurboRepo, generative AI tools, Prometheus, Grafana and PagerDuty