Senior QA Engineer (Web3)

The Senior QA Engineer will own the quality assurance process for Web3 products and applications, including manual testing, automation, integration validation, and release sign-off. The ideal candidate should understand blockchain fundamentals, transaction flows, wallet behavior, and the unique testing challenges involved in decentralized applications.

• Define and execute test strategy for Web3 applications and blockchain-integrated platforms
• Create test plans, test cases, regression suites, and release validation checklists
• Test smart contract-integrated application flows including wallets, signatures, approvals, balances, and transaction confirmations
• Validate APIs, UI flows, backend integrations, and on-chain/off-chain interactions
• Identify, log, track, and verify defects across multiple environments
• Work closely with developers and product managers during sprint execution and release planning
• Perform functional, regression, integration, negative-case, and exploratory testing
• Support automation initiatives for UI/API workflows where applicable
• Validate releases across dev/test/staging environments and assist in UAT readiness
• Prepare QA reports, test summaries, and quality metrics

• 4+ years of QA experience, with exposure to Web3/blockchain-based products
• Strong understanding of QA processes, defect lifecycle, and release testing
• Familiarity with blockchain concepts such as wallets, gas fees, transaction lifecycle, token transfers, and confirmations
• Experience testing APIs, web applications, and backend-integrated systems
• Ability to write clear bug reports, test cases, and QA documentation
• Experience with test management and bug tracking tools such as Jira, TestRail, or similar
• Strong analytical mindset and attention to detail
• Ability to work in Agile sprint environments

• Experience testing EVM-based dApps, smart contract workflows, or zkSync/L2-integrated applications
• Familiarity with wallet tools such as MetaMask and blockchain explorers
• Experience with automation tools such as Playwright, Cypress, Selenium, Postman, or similar
• Exposure to contract testing frameworks or transaction simulation workflows
• Basic understanding of Solidity or developer workflows for better debugging collaboration

• Wallet connection and authentication flows
• Signature and approval workflows
• Token transfers, mint/burn flows, balances, and transaction states
• Smart contract integration edge cases
• Failed transaction scenarios and RPC/network behavior
• Front-end, API, and backend consistency checks
• Environment validation and release regression