Senior Software Developer, Wealthsimple

• Several years (5+) of professional software engineering experience, with a track record of building and operating critical production systems that people or businesses depend on
• Strong backend engineering skills and sound judgment about system design, reliability, and trade-offs
• We work primarily in Kotlin, with Kafka and GraphQL in the mix - deep experience in a comparable stack matters more than an exact match, and we'll help you ramp on ours
• Experience building services that are low-latency and highly available
• You take production ownership seriously and stay calm and methodical when things go wrong
• Strong software quality habits: you write well-tested, maintainable and observable code. You make the codebase and the people around you better through your reviews
• Clear, steady communication. You work well with Product, Design, and other engineering teams, share context early, and ask questions before you're stuck rather than disappearing down a hole
• Curiosity about the "why" behind the systems - not just the code, but the financial reality it represents and the clients on the other side of it
• Enthusiasm for AI-assisted development, and interest in helping shape what excellent, rigorous AI-assisted engineering looks like on our team
• You take ownership end-to-end - from the design to the code to making sure it holds up in production
• You're comfortable with ambiguity and do your best work in a domain where the problems are consequential and rarely perfectly clean
• You're detail-oriented without losing the bigger picture - you care deeply about correctness, and about the experience for the client on the other side of it
• You're collaborative and generous by default: you share what you know, invest in the people around you, and help the whole team get better
• You're curious and always learning - open to new ideas, new perspectives, and new ways of working
• If this sounds like the kind of work you want to do, we'd love to hear from you - even if you don't tick every single box above. Depth, judgment, and a genuine interest in the problem count for a lot

Desirable

• We're growing the Leverage team and looking for a Senior Software Developer to take real ownership of the services at the core of margin and lending
• You'll join a small, high-trust group of senior engineers and own meaningful scope from early on - designing and building the backend systems that track balances and calculate buying power and collateral. It's backend-heavy, consequential work in a domain where the rules are real and the edge cases are plentiful
• You'll partner closely with Product, Design, and neighbouring engineering teams to turn complex financial logic into experiences that feel simple to the people relying on them
• Design, build, and operate the backend services that power balances, margin, buying power, collateral, and lending - the systems the rest of Wealthsimple trusts to be correct
• Own meaningful scope end-to-end, from technical design through to running your work reliably in production
• Solve genuinely hard problems around real-time correctness, low latency, and high availability, including keeping our systems dependable through market open and other peak moments
• Help evolve our architecture as Leverage grows - new lending products, larger scale, and an event-driven platform built on Kafka and a JVM services stack
• Raise the bar on quality and operational excellence through thoughtful design, code review, and a healthy sense of production ownership
• Mentor and grow the engineers around you - through pairing, code review, and in-the-moment feedback - and learn just as much from them in return
• Use AI-assisted tooling to ship faster and more safely. We treat building with AI as part of how we work, and we're always figuring out how to do it well