Senior Software Developer - Quality & Developer Tooling

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 $125 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 Team Clients & Accounts Platform The Clients & Accounts Platform domain at Wealthsimple oversees the broad and important mandate of growing our client base.

We acquire and guide clients through their onboarding journey so that they can seamlessly open and fund their accounts — most often with no human intervention and in minutes, not days! We build the core onboarding SDK’s that power feature development across Wealthsimple, and maintain critical-tier services our product depends on.

Clients & Accounts OpEx The CAP OpEx team is a dedicated engineering team within the Clients & Accounts Platform domain. As Wealthsimple scales and our platform surface area grows, this team exists to ensure we can ship code faster and more confidently, reduce the maintenance cost of our systems, and maintain world-class reliability for the critical-tier services that underpin the entire platform.

CAP services handle the core client and account models that every other product team depends on, making reliability and operational excellence non-negotiable. CAP OpEx works as a liaison to the broader Infrastructure Platform org, leveraging standard tooling and processes to achieve our reliability, quality, and velocity goals.

About The Role Senior Software Developer, Quality & Developer Tooling As a Senior Software Developer on the CAP OpEx team, you own the application-level quality and tooling layer of our platform.

Where our Site Reliability Engineer owns infrastructure, deployment, and system-level observability, you own the engineering complement: end-to-end test infrastructure, SDK instrumentation, test account tooling, and the internal developer automation that makes CAP engineers faster and more confident.

You build systems that other engineers depend on — not shipping product features to end users, but building the platforms and pipelines that let your colleagues do so safely at scale. This means thinking in systems, caring deeply about developer experience, and moving fluidly across the full stack: frontend SDKs, backend services, CI/CD. You're comfortable in a TypeScript/React codebase instrumenting an SDK one day and writing a backend script to automate a manual operational workflow the next.

You bring a deeply AI-native approach to your work beyond surface familiarity. You've made agentic coding tools like Claude Code a core part of your development workflow, and you can point to concrete ways they've multiplied your output. You have strong instincts for which problems AI can automate extremely well (rolling out analytics event wrappers across components, expanding e2e test coverage, scaffolding boilerplate tooling at scale) and you proactively design your systems and workflows to take advantage of that.

You ask first "how could this be automated?" before reaching for the long way around.

Key areas you'll own and grow:

• End-to-end testing platform - Architect and own CAP's e2e test suite across web and React Native mobile. This is framework architecture work: runner configuration, CI integration, test standards, and reliability at scale.
• SDK observability & instrumentation - Instrument our Account-Opening SDK with standardized analytics events and structured logging, leveraging React hooks and context patterns to give Wealthsimple visibility into frontend onboarding flows.
• Test account & staging tooling - Own and evolve CAP's staging and production test account tooling so every team at Wealthsimple can reliably create accurate test accounts for every environment. CAP owns account creation, we should own test account creation too.
• Developer automation - Build internal tools and automation that cut manual operational work across the CAP domain: feature flag cleanup, automated triage, AI-powered developer workflows, and whatever the team's highest-leverage opportunities turn out to be.
• Quality gates & coverage - Drive shift-left quality practices: mutation testing, code coverage improvements, and CI gates that catch issues before they reach production.

Requirements

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