Java Backend QA Engineer, White-box Focus

Binance

Java Backend QA Engineer ensuring quality for financial and Web3 products through technical testing. Collaborating with developers and using AI tools for efficient testing in a fintech environment.

Posted 6/14/2026full-timeRemote • 🇭🇰 Hong KongJuniorWebsite

Tech Stack

Tools & technologies

Distributed SystemsJavaKafkaMySQLRedisSpringSpring BootSpringBootWeb3

About the role

Key responsibilities & impact

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

What you’ll need

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)
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

Benefits

Comp & perks

Competitive salary and company benefits
Work-from-home arrangement (the arrangement may vary depending on the work nature of the business team)

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

Javaunit testingintegration testingAPI testingbackend testingREST APIsmessage queuesdatabasesmicroservice architectureswhite-box testing

Soft Skills

analytical mindsetattention to detailcollaborationproblem-solving