Senior Software Developer – Quality, Developer Tooling

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About the role

  • Senior Software Developer focusing on quality and developer tooling for fintech company Wealthsimple. Collaborating on internal developer automation and application-level quality tools.

Responsibilities

  • Own the application-level quality and tooling layer of our platform
  • Build end-to-end test infrastructure, SDK instrumentation, and developer automation
  • Architect and own CAP's e2e test suite across web and React Native mobile
  • Instrument our Account-Opening SDK with analytics events and structured logging
  • Own and evolve CAP's staging and production test account tooling
  • Build internal tools and automation to cut manual operational work across the CAP domain
  • Drive shift-left quality practices with mutation testing and CI gates

Requirements

  • Demonstrated experience building developer tooling, test frameworks, or internal platforms. Not just using them; you've designed and owned the systems themselves
  • Strong proficiency in TypeScript/JavaScript with hands-on experience in React and/or React Native contexts, particularly building shared libraries, SDKs, or instrumentation rather than product UIs
  • Backend development experience (Ruby, Python, Go, or equivalent) and comfort working across APIs, databases, and service-layer code
  • A quality engineering mindset. You think about testability, observability, and reliability from the start, not as an afterthought
  • An AI-native approach to your craft. You use agentic coding tools as a core part of your workflow, not a novelty, and have a genuine track record of using them to move faster and smarter on the problems they're well-suited for
  • Nice to have: experience designing and implementing end-to-end or integration test frameworks across web and mobile
  • Nice to have:experience instrumenting frontend SDKs with analytics or observability tooling, or building analytics event pipelines

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

Job type

Full Time

Experience level

Senior

Salary

CA$151,200 - CA$189,000 per year

Degree requirement

Bachelor's Degree

Tech skills

JavaScriptPythonReactReact NativeRubyTypeScriptGo

Location requirements

HybridTorontoCanada

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