Xsolla

Hands-on fullstack Web3 role spanning wallet-connected frontends, backend services, smart contract and indexing layers. Requires experience with wallet onboarding, account abstraction, gasless transactions, ERC-20/ERC-721/ERC-1155 standards, and keeping on-chain and off-chain state in sync. Observed freshness date: observed last week as of 2026-07-28 Remote signal: remote Salary: unknown Source URL: https://jobs.lever.co/xsolla/31587df5-85ff-47ec-914c-ee0d51f1e123

Hands-on fullstack Web3 role spanning wallet-connected frontends, backend services, smart contract and indexing layers. Requires experience with wallet onboarding, account abstraction, gasless transactions, ERC-20/ERC-721/ERC-1155 standards, and keeping on-chain and off-chain state in sync. Observed freshness date: observed last week as of 2026-07-28 Remote signal: remote Salary: unknown Source URL: https://jobs.lever.co/xsolla/31587df5-85ff-47ec-914c-ee0d51f1e123

ABOUT YOU We are looking for a Senior QA Engineer with strong Web3 experience to join our engineering team. You are meticulous, technically sharp, and deeply curious about decentralized technologies. You understand the nuances of blockchain interactions, wallet integrations, smart contract behavior, and hybrid on‑chain/off‑chain systems. You thrive in fast‑paced, agile environments and bring a proactive approach to quality—anticipating risks, validating distributed systems, and ensuring seamless user experiences across Web3‑enabled features. You are confident in manual testing, comfortable with API‑level validation, and eager to integrate AI‑driven testing tools to improve coverage, speed, and defect detection. If you’re excited to shape quality practices for blockchain‑enabled products and help define how Web3 experiences should feel for millions of users, we’d love to meet you. ABOUT US Xsolla is a global commerce company with robust tools and services to help developers solve the inherent challenges of the video game industry. From indie to AAA, companies partner with Xsolla to help them fund, distribute, market, and monetize their games. Grounded in the belief in the future of video games, Xsolla is resolute in the mission to bring opportunities together, and continually make new resources available to creators. Headquartered and incorporated in Los Angeles, California, Xsolla operates as the merchant of record and has helped over 1,500+ game developers to reach more players and grow their businesses around the world. With more paths to profits and ways to win, developers have all the things needed to enjoy the game. For more information, visit xsolla.com . 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 Qualifications & Skills - Required - 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) Good to Have - Good 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 workplaces + additional hardware to make you more effective at work Google Chat, Gmail, Google Drive, Confluence, Jira, GitLab Professional growth Free trainings and participation in specialized conferences Rich knowledge exchange within the company More perks Health insurance (Medical, dental and optical)- Employee and dependants Flexible hours: organize your day according to your needs and sprint & teamwork demands No dress code Comfortable and new office environment The duties of this position may change from time to time so the individual and organization can achieve their results. This job description is intended to describe the general level of work being performed. It is not intended to be all-inclusive. By submitting your application, you consent to Xsolla conducting background checks, where permitted by law, after the final interview stage. All checks will comply with local regulations, and your information will be handled confidentially. Xsolla KL Sdn Bhd takes your privacy very seriously, and will not sell or externally distribute any data received during the hiring process. Pursuant to the Personal Data Protection Act 2010 (“PDPA”), Xsolla KL Sdn Bhd is mindful and committed to the protection of your personal information and your privacy. Please direct any inquiries regarding your data privacy to careers@xsolla.com . For more vacancies: https://xsolla.com/careers

About Xsolla Xsolla is a global commerce company with robust tools and services to help developers solve the inherent challenges of the video game industry. From indie to AAA, companies partner with Xsolla to help them fund, distribute, market, and monetize their games. Grounded in the belief in the future of video games, Xsolla is resolute in the mission to bring opportunities together, and continually make new resources available to creators. Headquartered and incorporated in Los Angeles, California, Xsolla operates as the merchant of record and has helped over 1,500+ game developers to reach more players and grow their businesses around the world. With more paths to profits and ways to win, developers have all the things needed to enjoy the game. For more information, visit xsolla.com . About the Role We’re looking for a Web3 Fullstack Engineer to build the layer where web2 and web3 meet. Our mission is seamless web2 ↔ web3 integration — letting players and developers interact with digital items and move them through their full lifecycle (mint, own, trade, transfer, redeem, retire) without ever having to think about which side of the chain they’re on. You’ll work across the whole stack: wallet-connected frontends, high-throughput backend services, and the smart contract and indexing layers that make on-chain items feel as fast and familiar as anything in web2. This is a hands-on engineering role with broad ownership. A player buying an item with a credit card, a game granting an in-game asset, and a marketplace settling a peer-to-peer trade should all resolve to the same coherent item model — regardless of whether the item lives in a database, a custodial wallet, or on-chain. Making that experience invisible to the end user, and reliable for the developer, is the core of the job. You care about product quality and developer experience as much as protocol correctness. You’re comfortable owning a feature end to end, reasoning about trust and custody boundaries, and making pragmatic calls about what belongs on-chain versus off-chain. Responsibilities Build Seamless Web2 ↔ Web3 Integration — Design and ship the flows that let users move between traditional accounts/payments and on-chain wallets without friction: custodial and non-custodial wallets, account abstraction, gasless transactions, and fiat on-ramps. Own the Digital Item Lifecycle — Build the systems behind item mint, ownership, transfer, trading, and redemption — keeping on-chain state and off-chain records consistent, auditable, and fast. Develop Fullstack Features — Deliver end to end across wallet-connected frontends, backend services, and the smart contract / indexing layer that powers item ownership and turnover. Model Items & Ownership — Design data models and APIs that represent items uniformly whether they live off-chain, in a custodial wallet, or on-chain, and keep them in sync. Ensure Reliability of Value Flows — Anything that moves items or money must be correct under failure: idempotency, reconciliation, replay safety, and clear recovery paths. Integrate Blockchains & Marketplaces — Interact with EVM chains, token standards, indexers, and marketplace/settlement flows; abstract their differences behind clean internal interfaces. Collaborate Across Teams — Work with product, security, payments, and game-facing teams to turn business needs into well-scoped technical plans, and document decisions so they stand on their own. What You Bring Web3 & Digital Assets Web2 ↔ Web3 Integration — Hands-on experience bridging traditional systems with on-chain ones: wallet onboarding, custodial vs. non-custodial trade-offs, account abstraction, gasless/relayed transactions. EVM & Smart Contracts — Working knowledge of EVM chains and Solidity, including reading, integrating with, and reasoning about the safety of contracts. Token & Item Standards — Practical understanding of ERC-20, ERC-721, and ERC-1155, and how they map to real game items, ownership, and transfers. On-chain / Off-chain Sync — Experience keeping blockchain state consistent with off-chain databases: indexing, event ingestion, reorg handling, and reconciliation. Frontend Engineering TypeScript & React — Strong TypeScript and React skills for building responsive, production-grade interfaces. Wallet Integration — Experience with wallet connectivity and web3 client libraries (e.g. wagmi, viem, ethers.js, WalletConnect) and embedded/social login wallets. Backend Engineering Backend Services — Solid backend skills in Node.js and Go: clean APIs, concurrency, and performance under load. Distributed Systems — Experience with distributed systems and their trade-offs (consistency, availability, failure modes), especially where correctness of value transfer matters. Data & Infrastructure PostgreSQL — Schema design, query optimization, and migrations at scale. Kubernetes — Deploying, operating, and debugging services in a k8s environment. Message Streaming — Kafka or NATS — event-driven patterns, consumer groups, at-least-once delivery. Git & CI/CD — Git and modern CI/CD practices. Domain Context Gaming Industry Experience — Experience building or operating platforms for game developers, publishers, or players — especially anything touching in-game items, economies, or ownership. Nice to Have - Experience building NFT marketplaces, item trading, or secondary-market / settlement systems - Familiarity with blockchain indexing tooling (The Graph, custom indexers) and node/RPC infrastructure - Experience with account abstraction (ERC-4337), smart wallets, or paymaster/relayer setups - Background in payments or fiat on-ramp integration bridging traditional commerce and crypto - Experience with non-EVM ecosystems (Solana, etc.) or cross-chain / bridging patterns - Familiarity with security and compliance relevant to digital assets: custody, key management, audit logging, KYC/AML touchpoints - Contributions to open-source web3, wallet, or tooling projects - Hands-on, up-to-date experience with modern AI tools (e.g. Claude, Copilot, Cursor) for code generation, review, and accelerating day-to-day engineering work How We Work Xsolla operates across multiple time zones, and the systems you build sit directly in the path of real value moving between users, games, and chains. Strong written communication is essential — your designs and decisions need to stand on their own and be actionable without you in the room. We value directness, technical depth, and follow-through. If a design or production issue has real security, correctness, or reliability implications — especially anything touching item ownership or the movement of value — we expect you to say so clearly, defend your position with evidence, and stay engaged until it’s resolved.