Startale Group

Senior Quality Assurance Engineer – Trading

Startale Group

full-time

Posted on:

Location Type: Remote

Location: Japan

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Job Level

Senior

Tech Stack

CypressJavaScriptTypeScript

About the role

  • Define and evolve QA standards, release criteria, and quality metrics tailored to a trading platform.
  • Design, build, and maintain a scalable end-to-end automation framework for the web app, covering critical user journeys.
  • Develop comprehensive automated tests for backend services and APIs.
  • Validate correctness of execution paths, price impact, and fee calculations across different trading pairs and liquidity sources.
  • Drive API-level load and stress testing for high-throughput scenarios.
  • Design reliable test environments and datasets (mocked or real blockchain interactions), ensuring repeatability of E2E and API tests.
  • Work closely with Engineering and Product to define testable acceptance criteria.

Requirements

  • 3+ years in QA for web or fintech products, with at least 2+ years focused on test automation and E2E testing.
  • Strong experience building and maintaining E2E test frameworks (e.g. Playwright, Cypress, or similar).
  • Solid experience in API testing and automation (REST, JSON-RPC, or similar).
  • Strong JavaScript/TypeScript skills.
  • Experience testing complex transactional or financial systems.
  • Good understanding of trading concepts: slippage, liquidity, routing paths, execution flow.
  • Experience designing stable, maintainable automated test suites (CI integration, flakiness reduction).
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
test automationend-to-end testingAPI testingJavaScriptTypeScriptPlaywrightCypressRESTJSON-RPCload testing