Xsolla (USA), Inc.
Senior QA Engineer (Web3 Applications & Infrastructure)
- Compensation
- Not disclosed
- Location
- Kuala Lumpur
- Work setup
- Not specified
- Seniority
- Senior
- Employment
- Contract
- Experience
- 2+ years
- Category
- Qa
- Posted
Skills
Must have
- 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
Full description
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