Automation QA Engineer

About PayPay Card

PayPay Card Corporation was established in 2021 to provide users a FinTech service that is more accessible and convenient compared to previous credit cards and credit services, by integrating with the PayPay payment platform, which has surpassed 75 million users since its launch (as of August 2026).

We are looking for people who are passionate about refining our products at an overwhelming speed that other companies cannot match, as well as professionals who are interested in promoting the spread of cashless payments in Japan and the use of these payments as a financial life platform. Let us work together to create new value for users.

※ Please note that you cannot apply or be selected in parallel with PayPay Corporation, PayPay Card Corporation and PayPay Securities Corporation.

Job Description

At PayPay Card, we prioritize product quality to provide a seamless, safe, and secure financial experience to millions of users.
We are seeking a full-stack QA engineer who can perform both manual and automated testing in the role of SDET. This position requires an individual who is strong in automating backend services, APIs, and microservices, while also being flexible in manual testing such as exploratory testing and usability verification.You will contribute to improving the quality of the entire PayPay Card system by formulating quality strategies, improving QA processes, and mentoring the team.

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Main Responsibilities**

Automated Testing

• Design, develop, and operate test automation frameworks for batch processing, backend services, APIs (REST/gRPC), and microservices
• Build automated regression and functional test suites
• Integrate automated tests into CI/CD pipelines (GitLab, Jenkins, Gradle)
• Verify distributed architectures using mock/stub strategies
• Promote modernization of test strategies for legacy systems (e.g., CORBA)
• Implement logging, debugging, and reporting (Allure, SLF4J, etc.)

Manual Testing

• Plan, design, execute, and sign-off tests for complex functions in the credit card lifecycle
• Detect usability and functional defects through exploratory testing
• Ensure and improve quality through specification reviews and quality improvement activities
• Promote quality improvements in collaboration with developers, product managers, and designers

Process Improvement / Collaboration

• Standardizing QA best practices and expanding them throughout the organization