Binance
About the Role
We are looking for a passionate and curious Java Backend QA Engineer to join our team. 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.
This is a great opportunity for a young talent who wants to grow fast in a high-impact, high-velocity fintech environment.
Responsibilities
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Design and execute white-box and grey-box test strategies for Java-based backend services, including unit, integration, and API testing
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Read and analyze Java source code to identify edge cases, logic flaws, and potential risk points
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Build and maintain automated test frameworks and test tooling for financial backend systems
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Collaborate with developers on code reviews, test coverage analysis, and CI/CD pipeline quality gates
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Test and validate blockchain transactions, web3 wallet operations, and on-chain/off-chain data consistency
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Investigate production issues, trace root causes through logs, DB records, and service call chains
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Leverage AI tools (e.g., LLM-assisted test generation, log analysis, code review) to amplify testing efficiency
Requirements:
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1+ years of experience in software testing or backend development
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Solid understanding of Java — able to read, write, and debug Java code confidently
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Hands-on experience with backend testing: REST APIs, message queues (Kafka), databases (MySQL/Redis)
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Familiarity with microservice architectures and distributed systems concepts
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Strong analytical mindset with attention to detail and a passion for breaking things (in a good way)
Preferred Requirements:
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Experience in fintech, crypto, or blockchain domain testing
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Knowledge of web3 wallets, on-chain data, or DeFi protocols
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Familiarity with Spring Boot, Dubbo, or similar Java frameworks
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Experience using AI-assisted tools in daily engineering work
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Exposure to white-box testing techniques: code coverage, mutation testing, static analysis
Why Binance
To apply for this job please visit himalayas.app.
Working in China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the second-most populous country after India, with a population exceeding 1.4 billion, across an area of 9.6 million square kilometers (3,700,000 sq mi), making it the third-largest country by area. It is divided into 33 province-level divisions, including two special administrative regions. Beijing is the capital, while Shanghai is the most populous city by urban area. Its geography features the vast Central Plain, major rivers such as the Yangtze and Yellow River, deserts, subtropical and temperate fores
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