Java Backend QA Engineer (White-box Focus)

You'll work closely with developers to ensure the quality of complex financial and Web3 products through deep technical testing — not just black-box validation, but real code-level understanding. Responsibilities 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 Requirements: 1+ years of experience in software testing or backend development Solid understanding of Java — able to read, write, and debug Jav...