Staff Backend Software Engineer - User Platform

Join the team redefining how the world experiences design. Hey, g'day, mabuhay, kia ora, 你好, hallo, vítejte! Thanks for stopping by. We know job hunting can be a little time consuming and you're probably keen to find out what's on offer, so we'll get straight to the point. Where and how you can work Collingwood is home to our Melbourne campus - a vibrant, creative hub for connection and impactful work. While Sydney is home to our HQ, Melbourne brings its own unique vibe, with local artwork, lush greenery, and thoughtfully designed spaces to help you collaborate, focus, and feel part of a welcoming community. This role is based in Melbourne, and we’re looking for someone who calls it home. Our hybrid way of working gives you the flexibility to work remotely, and to come together on campus for meaningful in-person collaboration and connection when it matters most. What you’d be doing in this role As Canva scales change continues to be part of our DNA. But we like to think that's all part of the fun. So this will give you the flavour of the type of things you'll be working on when you start, but this will likely evolve. At the moment, this role is focused on: Design, build and own core components of Canva's authorization and access control systems — including our centralised, SpiceDB-backed authorization platform. Help product teams adopt these capabilities — designing the patterns, tooling and integrations that make authorization easy to get right at Canva's scale. Make sound technical trade-offs for critical, high-availability infrastructure serving hundreds of millions of users. Partner across Security, API Platform, Admin Experience and product engineering to align on requirements and drive adoption. Help shape the platform's direction — the subject/identity model, access control model, request context, and authorization for agentic AI workflows. Mentor and uplift engineers across the team on system design and IAM best practice. You're probably a match if you have