QA Automation Engineer – Web3

Braintrust; United States; Remote; USD 39,000 - 43,000; Full time

Job summary

Braintrust is hiring a QA Engineer to own manual and automated testing for web and mobile apps, with a focus on Web3 wallet interactions and on-chain vs off-chain behavior. You will design tests, report bugs with clear steps, and collaborate across time zones in a fast-paced environment.

The role requires 3–5 years of QA experience, proficiency in scripting (TS/JS/Python), and strong test strategies. Remote-friendly with global teams and a 40-hour work week.

Qualifications

• 3–5 years in QA/quality engineering, hands‑on with both manual/functional and automated testing.
• Experience testing web and mobile apps, including cross-browser (Chrome, Safari, etc.) and cross-device verification.
• Solid test-case design, execution, and regression testing discipline (able to own recurring daily/regression sweeps).
• Working knowledge of core Web3 flows: wallet connections (MetaMask, Trust Wallet, WalletConnect), transaction signing, and on‑chain vs off‑chain behavior. Need to have smart contract + wallet testing experience.
• Experience testing third‑party/exchange (CEX) integrations end to end (e.g. Coinbase‑style connect flows).
• Comfortable setting up and managing test accounts, credentials, and environments.
• Clear, reproducible bug reporting and tracking in Linear (or Jira), with crisp repro steps and evidence.
• Scripting ability in TypeScript, JavaScript, or Python at a working level.
• Strong written English and ability to collaborate across US/Europe/India
• time zones

Skills

QA experience

Cross-browser testing

Web3 testing

Bug reporting

Scripting (TS/JS/Python)

English communication

Tools

Jira/Linear

CI/CD (GitHub Actions)

Playwright/Cypress

Job description

• Rate: $28 – $31/hr
• Hours: 40 hours / week
• Experience: 3 - 5 years
• Location: United States | Canada + 9 more

Must-haves

• 3–5 years in QA/quality engineering, hands‑on with both manual/functional and automated testing
• Experience testing web and mobile apps, including cross-browser (Chrome, Safari, etc.) and cross-device verification
• Solid test-case design, execution, and regression testing discipline (able to own recurring daily/regression sweeps)
• Working knowledge of core Web3 flows: wallet connections (MetaMask, Trust Wallet, WalletConnect), transaction signing, and on‑chain vs off‑chain behavior. Need to have smart contract + wallet testing experience
• Experience testing third‑party/exchange (CEX) integrations end to end (e.g. Coinbase‑style connect flows)
• Comfortable setting up and managing test accounts, credentials, and environments
• Clear, reproducible bug reporting and tracking in Linear (or Jira), with crisp repro steps and evidence
• Scripting ability in TypeScript, JavaScript, or Python at a working level
• Strong written English and ability to collaborate across US/Europe/India
• time zones

Nice-to-haves

• Hands‑on with Playwright and/or Cypress (writing and maintaining tests, not just running them)
• Familiarity running tests in CI/CD (GitHub Actions, CircleCI)
• Experience with testnets or mocking Web3 providers
• Comfort using AI dev tools (Copilot, Cursor, Claude) to speed up test authoring
• Familiarity with blockchain explorers for verifying on‑chain state
• Prior startup / fast‑paced environment experience