Full Description

Role Overview 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. Key Responsibilities 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 Required Skills & Qualifications 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 Preferred Qualifications 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 Key Testing Areas 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