Senior Software Engineer - Unloan Full Stack (Typescript, React, GraphQL API, Node.js)

CommBank; Sydney; On-site; AUD 150,000 - 190,000; Full time

Job summary

CommBank’s Unloan team is seeking a Senior Software Engineer (Full Stack) to build world-class fintech platforms using TypeScript, React, Node.js and GraphQL. You’ll own end-to-end delivery in a modern, cloud-native environment and mentor peers while championing GenAI-driven innovation.

You’ll work across back-end and front-end systems, design scalable architectures, and contribute to high-performance services, security, and automated testing to delight customers and accelerate delivery.

Qualifications

• Experience building full-stack systems with TypeScript, React, Node.js and GraphQL.
• Ability to own end-to-end design and delivery of scalable services.
• Experience in cloud-native deployments (Azure or AWS) and CI/CD pipelines.
• Familiarity with automation, testing (Playwright/Jest) and observability.

Responsibilities

• Build secure, scalable platforms using TS/React/Node.js/GraphQL.
• Own end-to-end delivery from design to production for Unloan features.
• Design scalable architectures and lead cross-team initiatives.
• Mentor engineers and uphold engineering excellence in FinTech.

Skills

Typescript

React

GraphQL

Node.js

Azure

AWS

CI/CD

Docker

Kubernetes

GitHub Actions

Tools

Docker

Kubernetes

GitHub Actions

Azure

AWS

Job description

Senior Software Engineer - Unloan Full Stack (Typescript, React, GraphQL API, Node.js)

We’re seeking a Senior Software Engineer (Full Stack) to drive innovation and build world-class products using Typescript, React, Node.js and GraphQL.

You have deep technical expertise, a passion for innovation (GenAI), and the drive to deliver exceptional user experiences.

Together we will build tomorrow’s bank today, using world-leading engineering, technology, and innovation.

• We’re seeking a Senior Software Engineer (Full Stack) to drive innovation and build world-class products using Typescript, React, Node.js and GraphQL.

• You have deep technical expertise, a passion for innovation (GenAI), and the drive to deliver exceptional user experiences.

• Together we will build tomorrow’s bank today, using world-leading engineering, technology, and innovation.

Do work that matters

We’re Unloan – a forward-thinking business looking to revolutionise the lending industry. We’re a modern, agile, standalone brand backed by the Commonwealth Bank and we’re building the future of digital home lending.

As the Senior Software Engineer working for Unloan at CBA, you will help drive business growth by driving innovation at the intersection of technology, security, and intelligent automation. You will help in supporting the strategic design and architecture of Unloan’s platform, delivering complex, high-performance services and products that redefine digital lending.

Reporting to an Unloan Chapter Lead, you’ll operate in a modern full-stack, full-cycle engineering environment, owning end-to-end delivery from design to production. You’ll build secure, scalable solutions using TypeScript, React, Node.js, and GraphQL, while driving Agentic AI and automation to streamline operations and accelerate delivery across both back-end and front-end systems.

See yourself in our team

CBA’s Technology unit delivers world-class digital banking and safeguards the bank’s systems through leadership in data, infrastructure, cyber security, and resilience. It also empowers over 53,000 employees with cutting-edge workplace technology and tools to enhance collaboration and customer outcomes.

Join the Unloan technology team, part of CBA’s wider Digital and Technology Home Buying division within the Digital Technology function, where we’re redefining home lending from the ground up. Unloan is a digital-first platform built like a start-up but backed by the scale and trust of CommBank. We’re transforming a traditionally slow, complex process into a seamless, transparent, and empowering experience for our customers.

Our technology is cloud-native, GraphQL-driven, data-informed, and secure by design, enabling faster decisions, smarter automation, and continuous innovation. Every design and engineering choice supports our mission to make home loans fairer, simpler, and more rewarding, from effortless applications to our automatic loyalty discount that lowers rates every year At Unloan, innovation meets impact.

You’ll work with a tight-knit, high-performing team of engineers, designers, and product thinkers who believe technology can make banking better. We combine the agility of a start-up with the strength and stability of Australia’s largest bank, moving fast, experimenting boldly, and shipping meaningful features that change how Australians experience home ownership. Unloan is where modern engineering creates real-world impact.

We’re interested in hearing from people who

• Build exceptional cross-platform experiences using Typescript, React, Node.js and GraphQL, taking advantage of Expo’s open-source power to ship faster, reduce native complexity and deliver world-class services and product solutions.

• Bring deep full-stack engineering expertise with a proven ability to own end-to-end system design, leading full stack delivery across the full lifecycle, from building and guiding architecture through to deploying and operating scalable back-end services and intuitive front-end experiences, with robust integrations that deliver real business impact

• Shape Unloan’s technology direction by designing scalable architectures, aligning engineering decisions to business and customer goals and leading complex, cross-team initiatives from concept to delivery.

• Stay hands-on across the modern JavaScript ecosystem, applying deep expertise in, TypeScript, Node.js and GraphQL to build high-performing platforms and solve challenging technical problems.

• Own cloud-native engineering by deploying in Azure or AWS, using Docker (bonus for Kubernetes) and driving modern CI/CD pipelines with GitHub Actions s, TeamCity or Octopus Deploy.

• Champion innovation, quality and speed through strong observability, automated testing (e.g., Playwright) and a pragmatic approach that delivers fast while maintaining engineering excellence.

• Lift the entire team by mentoring engineers, setting high technical standards and fostering curiosity, creativity and a passion for solving hard problems in FinTech and home lending.

Tech skills

We use a broad range of tools, languages, and frameworks. We don’t expect you to possess knowledge of all, but experience or exposure with some, or their equivalents, will set you up for success in this team:

• Backend: Node.js, GraphQL, REST APIs

• Frontend: React, TypeScript, GraphQL

• Architecture: Microservices Architecture, Distributed Systems, System Design

• Cloud & Infrastructure: AWS, Azure, Docker, Kubernetes

• DevOps: Git, SonarQube

• CI/CD: GitHub Actions, CI/CD Pipelines

• AI: Generative AI, Agentic AI

• Quality & Testing: Jest, Playwright, Storybook, Automated Testing

• Observability & Operations: Observe, Application Insights

• Engineering Practices: Full Cycle Engineering, Production Readiness, FinTech Systems, Protected Environments

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