Senior Software Developer

Build something people love

Wealthsimple is Canada’s leading financial innovator. The company offers a full suite of simple, sophisticated financial products across managed investing, do-it-yourself trading, cryptocurrency, tax filing, spending and saving. Wealthsimple currently serves more than 4 million Canadians and holds over $155 billion in assets under administration. The company was founded in 2014 by a team of financial experts and technology entrepreneurs, and is headquartered in Toronto, Canada. We're proud of what we've built — and we're just getting started. Read our Culture Manual and learn more about how we work. About the role

As a Senior Front End Engineer on our trading and investing teams, you'll own meaningful slices of the experiences at the heart of Canada's first zero-commission brokerage - the surfaces over 4 million Canadians rely on, and invest with. This is a pipeline role across several frontend-focused teams, including Order Execution and Options Trading, and we'll match you to the team where your experience and interests fit best. These are high-visibility, high-stakes surfaces: the order flow across equities, options, and crypto, and the trading experiences active clients use every day. A slow screen or a mishandled order is felt immediately by our clients, so the bar for reliability, performance, and craft is high. You'll bring strong technical judgment, a bias toward action, and a deep sense of ownership, working closely with product managers, designers, and engineers to turn complex, high-stakes problems into simple, reliable trading experiences. What you'll do

Own complex, end-to-end frontend projects across the trading experience - from technical design through implementation, launch, and iteration

Build and improve the client-facing surfaces that power our order flow and trading products, with a focus on reliability, performance, and correctness

Work on high-stakes client journeys: order entry and execution, options trading, real-time market data, and portfolio experiences across equities, options, and crypto

Make thoughtful architectural decisions and help the team balance speed, quality, and scale — influence what we build, how we build it, and where we go next

Partner closely with Product and Design to clarify goals, surface trade-offs, and deliver outcomes, not just features

Build with the reliability and observability standards that trading journeys demand — clients notice the moment something is slow or wrong

Leverage AI-centric workflows to ship faster and safer — we invest heavily in AI tooling and expect senior engineers to push the frontier of how we use these tools

Raise the technical bar through design reviews, code reviews, documentation, pairing, and mentorship

What you bring

5+ years of professional software engineering experience, with a track record of shipping production-grade systems that real users depend on

Strong frontend fundamentals with React and TypeScript, and ideally React Native — you build performant, reliable client experiences and understand how they behave under real-world conditions.

Native mobile experience (Swift/iOS or Kotlin/Android) is a strong plus, whether you've built native apps directly or directed and reviewed native work

An AI-first development workflow that doesn't compromise on rigour — you've moved beyond AI as autocomplete into genuinely agentic workflows, and bring the judgment to know when the model is wrong, where the risks are, and what verification a change needs before it touches production

Product judgment and a maker-owner mindset — you care about the client problem, simplify complexity, and want to own and grow a domain over time, not just ship the next ticket

Technical leadership and strong communication — you raise the bar through your code, reviews, and design docs, navigate ambiguity, and bring others along with a collaborative, low-ego approach

Nice to have experience

Experience building trading, brokerage, or other real-time, high-reliability financial surfaces

GraphQL and performance optimization experience

Ruby on Rails, Kotlin, or Java experience — helpful for working across the stack, but not a requirement; depth and willingness to ramp matter more

Experience in a fast-moving environment where engineers have broad ownership and meaningful influence over product decisions

Passionate about trading and investing, perhaps even an active investor or trader yourself, and you use that perspective to build experiences that feel intuitive to people managing their own money.

Why Wealthsomething?

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 p