Senior Software Developer, Book of Record (Leverage)

Wealthsimple Technologies • ,

11d • CA$152,000 - CA$189,000 • Hybrid

About The Position

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.

Requirements

• 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.
• 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.

Nice To Haves

• Experience in fintech, banking, trading, or another regulated, high-stakes domain - ideally at a fast-moving, high-growth company.
• Familiarity with ledgers, reconciliation, or financial-correctness problems.
• Experience with event-driven architecture and stream processing (Kafka, Flink, or similar).
• Familiarity with Apollo Federation or Kubernetes.
• Exposure to margin, options, futures, or lending products.

Responsibilities

• 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.

Benefits

• Top-tier health benefits and life insurance
• Long-term group savings with employer match, through Wealthsimple for Business
• 20 vacation days, 4 wellness days, and unlimited sick and mental health days per year
• 90 days away: work outside Canada for up to 90 days per year
• Employee resource groups, including Rainbow (2SLGBTQ), Women of WS, and Black at WS

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed