Senior QA Engineer (Web3 Applications & Infrastructure)

Xsolla is a global commerce company providing robust tools and services to help developers navigate the video game industry. From indie to AAA, companies partner with Xsolla to fund, distribute, market, and monetize their games. Driven by a belief in the future of video games, Xsolla is dedicated to creating opportunities and continuously providing new resources to creators. Headquartered in Los Angeles, California, Xsolla operates as the merchant of record and has assisted over 1,500 game developers in reaching more players and growing their businesses worldwide. With more paths to profits and ways to win, developers have all the necessary tools to enjoy the game.

Introduction

We are seeking a Senior QA Engineer with extensive Web3 experience to join our engineering team. You are detail-oriented, technically proficient, and deeply interested in decentralized technologies. You possess a strong understanding of blockchain interactions, wallet integrations, smart contract behavior, and hybrid on-chain/off-chain systems.

You thrive in dynamic, agile environments and approach quality proactively, anticipating risks, validating distributed systems, and ensuring seamless user experiences for Web3-enabled features. You are confident in manual testing, proficient in API-level validation, and eager to integrate AI-driven testing tools to enhance coverage, speed, and defect detection.

If you are keen to shape quality practices for blockchain-enabled products and define the Web3 user experience for millions, we encourage you to apply.

Responsibilities

• Core QA Ownership
  • 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.
• Web3-Specific Quality Work
  • 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 to detect anomalies.
• Process & Tooling
  • 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.
• Quality Leadership
  • 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.

Requirements

• 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.

Benefits

• Convenient Work Tools
  • Latest Mac workstations + additional hardware for increased effectiveness.
  • Google Chat, Gmail, Google Drive, Confluence, Jira, GitLab.
• Professional Growth
  • Free training and participation in specialized conferences.
  • Rich knowledge exchange within the company.
• More Perks
  • Health insurance (Medical, dental, and optical) for employees and dependents.
  • Flexible hours: organize your day according to your needs and sprint & teamwork demands.
  • No dress code.
  • Comfortable and new office environment.

About Company

Xsolla is a global commerce company providing robust tools and services to help developers navigate the video game industry. From indie to AAA, companies partner with Xsolla to fund, distribute, market, and monetize their games. Driven by a belief in the future of video games, Xsolla is dedicated to creating opportunities and continuously providing new resources to creators. Headquartered in Los Angeles, California, Xsolla operates as the merchant of record and has assisted over 1,500 game developers in reaching more players and growing their businesses worldwide. With more paths to profits and ways to win, developers have all the necessary tools to enjoy the game.

How to Apply

For more vacancies, visit: https://xsolla.com/careers