Senior QA Engineer - Web3 (
About This Role
Join Xsolla's engineering team as the quality guardian for our blockchain-enabled products. You'll work at the intersection of crypto infrastructure and gaming commerce, validating hybrid on-chain/off-chain architectures while helping define testing standards for an industry still writing its playbook. This is a role for someone who sees QA not as gatekeeping, but as a craft that enables innovation to ship safely.
What You'll Be Doing
Design and execute rigorous test strategies for wallet integrations, smart contract interactions, and distributed ledger-based features
Validate API-level functionality across blockchain and traditional backend systems to ensure seamless data flow
Proactively identify risks in decentralized workflows before they reach production, protecting user trust and funds
Collaborate closely with engineers and product teams to embed quality thinking early in the development lifecycle
Integrate AI-powered testing tools to boost coverage, accelerate defect detection, and modernize QA processes
Champion best practices for testing hybrid web3/web2 systems across the organization
What We're Looking For
Proven senior-level QA experience, with hands-on exposure to blockchain, crypto, or DeFi products
Solid understanding of smart contract behavior, wallet connections, and on-chain transaction flows
Strong manual testing skills paired with comfort validating RESTful APIs and distributed systems
A detail-oriented mindset that doesn't miss subtle bugs in complex, multi-layered architectures
Experience thriving in agile, fast-moving environments typical of crypto and web3 startups
Curiosity and adaptability to learn emerging tools, including AI-driven QA automation
Bonus Points
Familiarity with gaming industry workflows and player-facing crypto features
Experience testing NFT marketplaces, token-gated access, or in-game economies
Background scripting automated test cases for blockchain-based applications
Exposure to multiple blockchain networks and their respective testing quirks
Why Join Us
Competitive compensation reflecting your expertise in a high-demand niche
Flexible, collaborative culture built around trust and ownership
Direct impact on shaping how web3 experiences feel for a massive global player base
Opportunities to grow alongside a company at the forefront of game commerce and decentralized innovation
Requirements
Responsibilities: Lead manual testing of complex Web3 and platform features across multiple environments Validate blockchain interactions, wallet flows (e.g., MetaMask, WalletConnect), and decentralized identity/authentication 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 (e.g., automated test generation, log analysis, 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 Qualifications & Skills: 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 (e.g., transactions, gas, confirmations, RPC endpoints) Experience validating APIs using Postman or similar tools Proficiency with bug tracking systems (e.g., Jira) and version control (e.g., Git) Comfortable using browser developer tools and basic terminal/command‑line workflows Strong verbal and written English communication skills Familiarity with AI‑powered testing tools (e.g., test case generation, smart prioritization, AI log analysis) Nice to Have: Experience with wallet testing (MetaMask, Coinbase Wallet, WalletConnect, custom wallets) Understanding of smart contracts, Solidity basics, or blockchain debugging tools Experience with automated testing frameworks (Playwright, Cypress, 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
Ready to Apply?
To submit your application for this position, please visit Xsolla's official website and follow their application process.