Senior QA Engineer

You will lead manual quality assurance for Web3 and platform features across multiple environments. You will validate blockchain interactions, wallets, smart contracts, APIs, transaction flows, and on-chain/off-chain data synchronization. You will document and track defects, maintain test cases and environments, support CI/CD coverage, conduct performance testing, monitor production signals, and mentor junior QA engineers.

Responsibilities

• Lead manual testing of complex Web3 and platform features across multiple environments
• Validate blockchain interactions, wallet flows, and decentralized identity and authentication
• Test smart contract interactions, event handling, and on-chain/off-chain data synchronization
• Drive exploratory, functional, and regression testing
• Identify, log, and track reproducible issues using Jira or similar tools
• Verify blockchain node responses, RPC interactions, and event-driven workflows
• Validate transaction signing, wallet authentication, and multi-chain compatibility
• Collaborate with engineers to test smart contract upgrades, migrations, and versioning
• Monitor production logs, blockchain explorers, and analytics dashboards for anomalies
• Create and maintain test cases, checklists, and QA documentation
• Collaborate with engineering and DevOps teams on CI/CD test coverage
• Evaluate and integrate AI-powered testing tools
• Set up and manage test environments, staging pipelines, and job configurations
• Conduct load, stress, and performance testing for high-volume Web3 interactions
• Act as a quality advocate across sprint planning, reviews, and release cycles
• Mentor junior QA engineers
• Contribute testing best practices for decentralized systems and hybrid architectures

Requirements

• Minimum 7 years of total QA experience, including end-to-end quality ownership
• At least 2 years of hands-on Web3 testing experience
• Understanding of manual testing methodologies and the defect life cycle
• Knowledge of blockchain fundamentals, including transactions, gas, confirmations, and RPC endpoints
• Experience validating APIs with Postman or similar tools
• Proficiency with bug tracking systems such as Jira and version control such as Git
• Ability to use browser developer tools and basic terminal or command-line workflows
• Strong verbal and written English communication skills
• Familiarity with AI-powered testing tools
• Experience with wallet testing is preferred
• Understanding of smart contracts, Solidity basics, or blockchain debugging tools is preferred
• Experience with Playwright, Cypress, or Selenium is preferred
• Knowledge of backend technologies, APIs, PHP, or related languages is preferred
• Experience with Linux and Bash scripting is preferred

Benefits

• Mac workstation and additional hardware
• Google Chat, Gmail, Google Drive, Confluence, Jira, and GitLab tools
• Free training and participation in specialized conferences
• Health insurance covering medical, dental, and optical care for employees and dependants
• Flexible working hours
• No dress code
• Office environment