Xero - Principal Engineer - Payments Products & Platform

• Payments Platform: this portfolio is the engine underneath, with provider integrations, bill payments and a single, product-agnostic API that other Xero teams build on. • Payments Platform: • Together they move billions of dollars across more than 150,000 transactions a day, a number set to double as we grow into the UK and US. • The teams are currently working on • Tech stack: microservices across web, API and data layers, built in languages such as C#, Java, Go or C++, running on AWS with SQL and NoSQL data stores. • Current focus: reviewing existing payments systems to work out what to extend, migrate or rebuild, alongside Growth experiments and AI-powered payment chasing. • Future focus: a multi-year payments architecture covering agentic payment workflows, payments inside AI assistants and recurring payments. • Global scale: replatforming payment methods and designing global rails and a ledger ready for new markets. • Where and how you can work • You'll be based in Sydney or Melbourne, working a hybrid model that blends time together in our modern offices with the flexibility of working from home. Boost days bring teams together to connect and collaborate in person. With colleagues across Australia and the US and payment flows that run around the clock, you'll also work across time zones. • Some of the things we're looking for • You bring deep experience designing and running large-scale distributed systems in production, balancing reliability, performance and cost, and any payments or fintech experience is a real plus. • API-first thinking is second nature, and you're at home across web, API and data layers, with fluency in at least one modern backend language, SQL and NoSQL stores, and cloud-native platforms, ideally AWS. • Legacy-heavy systems are a puzzle you enjoy, and you make clear, practical calls on whether to extend, migrate or build while staying hands-on through pairing, spikes and code. • A strong interest in utilising AI tooling is essential, as you will model how to use these technologies to automate tasks and improve engineering outcomes. • Your background shows a deep curiosity for growth hacking and a proven ability to design and analyse A/B tests that drive product usage. • You'll Go Further by mentoring Staff and Senior engineers, shaping cross-team initiatives with Xero's Principal community and setting standards that lift engineering across Xero.