Java Backend QA Engineer (White-box Focus)
Job Description
Binance is a leading global blockchain ecosystem behind the world’s largest cryptocurrency exchange by trading volume and registered users. We are trusted by 300+ million people in 100+ countries for our industry-leading security, user fund transparency, trading engine speed, deep liquidity, and an unmatched portfolio of digital-asset products. Binance offerings range from trading and finance to education, research, payments, institutional services, Web3 features, and more. We leverage the power of digital assets and blockchain to build an inclusive financial ecosystem to advance the freedom of money and improve financial access for people around the world.
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.
Requirements
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 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) Preferred Requirements: 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
About Binance
Binance is at the forefront of the global blockchain revolution, serving as the world's largest cryptocurrency exchange by trading volume. Our mission is to increase the freedom of money globally, and we are committed to building a robust ecosystem of products and services that empower individuals with financial autonomy. From advanced trading platforms to innovative blockchain solutions, we are constantly expanding our offerings to meet the evolving needs of the digital economy. Our culture thrives on innovation, collaboration, and a relentless pursuit of excellence. We foster an environment where bold ideas are encouraged, and every team member, especially in our growing Pakistani operations, is empowered to contribute significantly to our global impact. We value transparency, integrity, and a strong sense of responsibility to our users and the broader blockchain community. Working at Binance means being part of a diverse, global team that is passionate about shaping the future of finance. Joining Binance in Pakistan offers unparalleled opportunities for career growth and professional development within a rapidly expanding industry. With hundreds of open positions worldwide, we are looking for talented individuals who are eager to make a tangible difference. If you are driven by challenge, keen to innovate, and want to be part of a company that is redefining the financial landscape, explore our careers and embark on a rewarding journey with Binance.
Ready to Apply?
To submit your application for this position, please visit Binance's official website and follow their application process.