Senior Software Engineer, x15ventures

Let’s introduce ourselves 

We’re a venture-scaler powered by CommBank. That means we build, buy, and invest in startups that could benefit the bank’s 15 million customers and beyond.  

Because of what we do, we’re really neither corporate, nor startup – instead we’re happily navigating the space between both worlds. We're close enough to benefit from the bank’s strategy, scale and stability, but separate enough that we have the autonomy to try new things. To be a sandbox for change  

What about your team? 

We are looking for a Senior Software Engineer with knowledge and a broad range of concepts, technology, and domain insights to develop and deliver world-class software solutions.  

You will be primarily responsible for building software in fast-paced, greenfield environments, using the latest cloud tooling & frameworks to create early-stage prototypes & MVP releases that help advance business cases for new products. 

Along with the initial build, there is an expectation you can help establish and evolve these initiatives to help expand our portfolio of ventures.   

Key Responsibilities 

Experience 

The ideal candidate will bring the following qualifications and expertise: 

• Experience as a product-minded engineer, working from customer problems through to MVP solutions while helping shape product direction and delivering high-quality software 

• Design, implement, and run full-stack applications, ensuring seamless integration across front-end, back-end, and database layers with high test coverage 

• Implement and maintain robust CI/CD pipelines and Infrastructure as Code for a full stack project using AWS 

• Proactively identify, prioritize, and address technical debt, ensuring sustainable code quality and alignment with long-term project goals 

• Take initiative and provide expert guidance to the business on how to scope & develop new products 

We are interested to hear from people who have experience in  

• Strong experience in software design, including designing scalable, maintainable, and well-structured systems with clear separation of concerns and sound engineering trade-offs 

• Strong experience with automated testing across the whole testing pyramid, including unit, integration, and end-to-end testing to support quality, reliability, and confident delivery 

• 5+ years of programming and software development experience. Experience and comfort in TypeScript and Node.js 

• Proven experience building modern front-& back-end experiences using modern web technologies such as Next.js/ React 

• Experience integrating and developing queries for SQL databases such as PostgreSQL 

• Experience in web security practices with proven experience implementing and maintaining secure applications 

Desired 

• Experience applying Domain-Driven Design to model complex business domains, establish clear bounded contexts, and create software that aligns closely with business concepts and workflows 

• Experience with, or curiosity about, AI-native engineering, including exploring how AI-assisted tools, agents, and workflows can improve software delivery, developer productivity, and product capability 

What’s in it for you? 

Joining x15 gives you access to opportunities you won’t find in standalone corporate or startup roles.  

You'd be joining a team of experts, united by a love of finding solutions and making an impact. That means considerable diversity in your day-to-day. In what other role would you get to work with early-stage startups, more mature ventures, and Australia's leading bank, in an environment that encourages fresh ideas and innovation? 

• Generous perks - Including staff discounts on a variety of brands & financial products   

• Flexibility - our community make their career fit their lifestyle   

• Opportunity to thrive in the space between – Access to a space between corporate and startup, where our people explore, innovate and create without fear.   

• A diverse community - Access to a brilliant network of talented humans who live and champion our values and do things a little differently- the x15 way. 

• We value a diverse range of backgrounds and ideas and know this is fundamental for our future success.  

• Access to broad engineering community and potential to work within different ventures and the bank in the future