Senior QA Engineer Web3
Xsolla (USA), Inc. is the U.S. legal entity behind Xsolla, a global video-game commerce company and merchant of record providing payment processing, direct-to-consumer commerce, distribution, funding, subscriptions, fraud prevention, and player-engagement tools.
Maintainer signals as of 9/2/2026
Projects
About Xsolla (USA), Inc.
Xsolla operates a global gaming-commerce platform for developers and publishers. Its current offerings include localized payments across 200+ geographies, Pay Station checkout, Web Shops, subscriptions, publishing and distribution tools, game funding, fraud prevention, developer SDKs, player accounts, rewards, and related commerce services.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will lead manual, exploratory, functional, regression, load, stress, and performance testing for Web3 features. You will validate blockchain, wallet, smart contract, API, and on-chain and off-chain workflows, track defects, maintain QA documentation, manage test environments, support CI/CD coverage, evaluate AI-powered testing tools, monitor production data, and mentor junior QA engineers.
Requirements
- Minimum 7 years of total QA experience
- At least 2 years of hands-on Web3 testing experience
- Strong understanding of manual testing methodologies and defect life cycle
- Familiarity with blockchain fundamentals including transactions, gas, confirmations, and RPC endpoints
- Experience validating APIs with Postman or similar tools
- Proficiency with Jira or similar bug tracking systems and Git or similar version control
- Comfort using browser developer tools and basic command-line workflows
- Strong written and verbal English communication skills
- Familiarity with AI-powered testing tools
- Experience with wallet testing is a plus
- Understanding of smart contracts, Solidity basics, or blockchain debugging tools is a plus
- Experience with Playwright, Cypress, or Selenium is a plus
- Knowledge of backend technologies, APIs, PHP, or related languages is a plus
- Experience with Linux and Bash scripting is a plus
- Hands-on experience with AI platforms used in QA is a plus
Responsibilities
- Lead manual testing of complex Web3 and platform features
- Validate blockchain interactions, wallet flows, and decentralized identity and authentication
- Test smart contract interactions, event handling, and on-chain and off-chain synchronization
- Drive exploratory, functional, and regression testing
- Identify, log, and track reproducible issues using Jira or similar tools
- Analyze blockchain node responses, RPC interactions, and event-driven workflows
- Validate transaction signing, wallet authentication, and multi-chain compatibility
- Test smart contract upgrades, migrations, and versioning
- Monitor production logs, blockchain explorers, and analytics dashboards
- Create and maintain test cases, checklists, and QA documentation
- Collaborate with engineering and DevOps 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
- Advocate for quality across sprint planning, reviews, and releases
- Mentor junior QA engineers
- Contribute to testing best practices for decentralized and hybrid systems
Benefits
- Medical benefits
- Dental benefits
- Vision benefits
- Paid time off
