Binance is hiring a

Web3 Java Backend QA Engineer (White-box Focus)

• Design and execute white-box and grey-box test strategies for Java-based backend services, including unit, integration, and API testing

• Read and analyze Java source code to identify edge cases, logic flaws, and potential risk points

• Build and maintain automated test frameworks and test tooling for financial backend systems

• Collaborate with developers on code reviews, test coverage analysis, and CI/CD pipeline quality gates

• Test and validate blockchain transactions, web3 wallet operations, and on-chain/off-chain data consistency

• Investigate production issues, trace root causes through logs, DB records, and service call chains

• Leverage AI tools (e.g., LLM-assisted test generation, log analysis, code review) to amplify testing efficiency

Required

• 1+ years of experience in software testing or backend development

• Solid understanding of Java — able to read, write, and debug Java code confidently

• Hands-on experience with backend testing: REST APIs, message queues (Kafka), databases (MySQL/Redis)

• Familiarity with microservice architectures and distributed systems concepts

• Strong analytical mindset with attention to detail and a passion for breaking things (in a good way)

Nice to Have

• Experience in fintech, crypto, or blockchain domain testing

• Knowledge of web3 wallets, on-chain data, or DeFi protocols

• Familiarity with Spring Boot, Dubbo, or similar Java frameworks

• Experience using AI-assisted tools in daily engineering work

• Exposure to white-box testing techniques: code coverage, mutation testing, static analysis