Senior QA Engineer - Web3 (

As a Senior QA Engineer for Web3 at Xsolla, you lead quality practices for blockchain-enabled gaming products. You bring deep hands-on experience testing Web3 systems-wallet integrations, smart contract interactions, and hybrid on-chain/off-chain architectures-and you shape how decentralized experiences feel for millions of users. You thrive in agile environments, anticipate risks in distributed systems, and combine manual testing expertise with emerging AI-driven testing tools.

What you'll do

• Lead manual testing of complex Web3 and platform features across multiple environments
• Validate blockchain interactions, wallet flows (MetaMask, WalletConnect), and decentralized identity and authentication systems
• Test smart contract interactions, event handling, and on-chain/off-chain data synchronization
• Drive exploratory, functional, and regression testing using structured documentation and deep product knowledge
• Identify, log, and track reproducible issues with precision using Jira or similar tools
• Identify 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 to detect anomalies
• Create and maintain detailed test cases, checklists, and QA documentation
• Collaborate with engineering and DevOps teams to ensure reliable CI/CD test coverage for Web3 components
• Evaluate and integrate AI-powered testing tools such as automated test generation, log analysis, and visual regression
• Set up and manage test environments, staging pipelines, and job configurations
• Conduct load, stress, and performance testing, especially around high-volume Web3 interactions
• Act as a quality advocate across sprint planning, reviews, and release cycles
• Mentor junior QA engineers and promote a culture of proactive quality ownership
• Contribute to best practices for testing decentralized systems and hybrid architectures

What you bring

• Minimum 7 years of total QA experience, including ownership of end-to-end quality
• At least 2 years of hands-on Web3 testing experience, covering blockchain integrations, wallet flows, or decentralized systems
• Strong understanding of manual testing methodologies and defect life cycle
• Familiarity with blockchain fundamentals such as transactions, gas, confirmations, and RPC endpoints
• Experience validating APIs using Postman or similar tools
• Proficiency with bug tracking systems such as Jira and version control such as Git
• Comfort using browser developer tools and basic terminal and command-line workflows
• Strong verbal and written English communication skills
• Familiarity with AI-powered testing tools such as test case generation, smart prioritization, and AI log analysis

Nice to have

• Experience with wallet testing including MetaMask, Coinbase Wallet, WalletConnect, or custom wallets
• Understanding of smart contracts, Solidity basics, or blockchain debugging tools
• Experience with automated testing frameworks such as Playwright, Cypress, or Selenium
• Knowledge of backend technologies, APIs, and familiarity with PHP or related languages
• Experience working in Linux environments and using Bash scripting
• Hands-on experience with AI platforms used in QA contexts

What we offer

• Medical, dental, and vision coverage
• Paid time off
• A personalized career roadmap and professional development through training and educational opportunities

About Xsolla

Xsolla is a global commerce company providing tools and services to help game developers fund, distribute, market, and monetize their games. Headquartered in Los Angeles, Xsolla has helped over 1,500 game developers reach players and grow their businesses worldwide.