Software Engineer - End-to-End Testing & Debugging (Finance)

Jobtailor; Toronto; On-site; CAD 80,000 - 110,000; Full time

Job summary

Jobtailor in Toronto, Canada is seeking a QA Engineer to own the inbound bug pipeline for the Terminal, design and build an end-to-end Playwright testing framework, and run tests in CI against preview deployments. You will expand regression coverage for financials, charts, screener, portfolio, authentication, subscriptions, and paywall flows, while writing unit and integration tests.

You will collaborate with engineers across the data infrastructure, contribute debugging guides, and help improve

Qualifications

• Proficiency in TypeScript, React, and Next.js.
• Hands-on experience building end-to-end test automation (Playwright preferred) and unit tests (Vitest or Jest), and running them in CI.
• Strong debugging skills across the full stack: browser devtools, network traces, server logs, error monitoring, database queries.
• Experience testing and debugging data-heavy applications where correctness matters: finance, analytics, or similar.
• Proven experience or strong interest in investing and finance.
• Ability to read an income statement, understand LTM and NTM, and recognize incorrect P/E ratio or free cash flow figures.
• Understanding of subscription tiers, entitlements, and paywalls.
• Experience or interest in AI technologies, specifically Large Language Models (LLMs), including using AI coding agents in daily workflow.
• Keen eye for design, UI, and UX.
• Based in Canada.
• Good coding and debugging ability; fixes issues directly rather than only filing tickets.
• Nice to have: Python
• Nice to have: Cloudflare Workers, Firebase/Firestore, PostgreSQL
• Nice to have: Highcharts or other charting libraries
• Nice to have: Finance coursework, CFA progress, or professional investing experience

Responsibilities

• Own the inbound bug pipeline for the Terminal, including Sentry issues, customer-reported problems, and self-discovered bugs
• Reproduce, prioritize, fix, or route Terminal bugs
• Fix bugs across the React/Next.js frontend, Cloudflare Workers backend, and data layer
• Investigate issues to their root cause
• Design and build the Terminal's end-to-end Playwright test framework
• Run end-to-end tests in CI against preview deployments
• Expand regression coverage for financials, charting, screener, portfolio, authentication, subscriptions, and paywall flows
• Write unit and integration tests alongside fixes
• Create debugging guides, test conventions, and tooling for the engineering team
• Work alongside engineers building the Terminal and Fiscal.ai data infrastructure

Skills

End-to-End Testing

Debugging

Attention to Detail

Problem-Solving

Collaboration

Education

CFA Progress

Tools

Playwright

Vitest

Jest

TypeScript

React

Next.js

Cloudflare Workers

Firebase/Firestore

PostgreSQL

Highcharts

Job description

Jobtailor in Toronto, Canada is seeking a QA Engineer to own the inbound bug pipeline for the Terminal, design and build an end-to-end Playwright testing framework, and run tests in CI against preview deployments. You will expand regression coverage for financials, charts, screener, portfolio, authentication, subscriptions, and paywall flows, while writing unit and integration tests.

You will collaborate with engineers across the data infrastructure, contribute debugging guides, and help improve