PayPay Corporation

QA Engineer

• Leading weekly release test cycles as QAM, including test planning, test execution, test progress control, test result analyze/issue triage and reporting for QA Functional and Non-Functional tests.
• Leading Roadmap Projects, responsible for product STLC, create Test Plan, define Test Scope, track status for test progress, and ensure software quality.
• Prepare test data, tools, and environment needed for test execution
• Report found defects, track status of reported defects, and verify fixes
• Design, create and review test cases based on specifications by closely collaborating with QA Engineers
• Maintain and update the master test cases, including collaboration with Automation QA

QA Manager

Product Manager

• Create clear and concise PRDs and collaborate with various stakeholders including design team, engineering team, and QA team
• Manage and execute the daily product development cycle with an eye on the product vision of PayPay Securities
• Drive the timely implementation of ideas into the product without being constrained by precedents
• Collaborate with internal stakeholders to understand user challenges and plan and execute to solve them
• Identify metrics that allow for a deep understanding of the user experience and repeatable continuous improvement of it

Product Manager – プロダクトマネジャー

Product Designer

• Work closely with Product Managers, Engineers, and Senior Designers to create new features and improve the UI/UX of existing features with the user experience as the first priority
• Take on a variety of challenges to deliver new securities product experiences to users
• Responsible for the total UI/UX design for PayPay securities native apps, PayPay securities mini-apps (point management and asset management mini-apps accessed through PayPay), PC trading sites, and management tools
• UX flow and UI design based on concept and design system
• Quantitative and qualitative research and analysis using questionnaires and interviews
• Analysis and improvement proposals using numerical analysis tools

Product Designer – プロダクトデザイナー

Engineering Manager

• Manage a team of Engineers responsible for the timely and high quality delivery of a product or project
• Leads the team in daily tasks, prioritizing tasks and making decisions based on changing business priorities
• Structures and facilitates team workflow and development and operational processes
• Collaborate with internal stakeholders to understand requirements and reflect them in the team’s technical requirements
• Conduct 1-on-1s and performance evaluations with team members, takes responsibility for team output, and facilitates team evolution and member growth
• Plans future resource requirements and conducts recruiting activities

Recruitment

• Full-Cycle Engineering Recruitment: Lead the end-to-end recruitment process for product engineers, from defining talent requirements with technical stakeholders to candidate closing and offer management
• Direct Sourcing & Global Recruitment: Formulate and execute proactive direct sourcing strategies to attract top-tier tech talent, both domestically and globally (including candidates residing overseas)
• Data-Driven Process Optimization: Analyze ATS pipeline metrics, sourcing ROI, and funnel conversion rates to continuously optimize hiring strategies and operational efficiency
• Stakeholder Alignment & Advisory: Partner closely with Engineering Leads to define role personas, design objective evaluation rubrics, and deliver interviewer training
• Recruitment Marketing & Events: Collaborate on employer branding initiatives, technical meetups, and hiring events to enhance PayPay’s presence in the tech market

Tech Recruiter

Backend Engineer

• Develop and operate backend applications in Java language (Java/Kotlin) for core banking systems
• Designing and developing for both performance and stability to maintain high reliability as a financial platform
• Understanding and implementing how to utilize infrastructure to solve system challenges
• Designing architecture based on application requirements and selecting middleware, etc.
• Performance tuning, monitoring settings, and alert response for microservices

Backend Engineer – Java, バックエンドエンジニア – Java

• Analyze testing requirements to develop comprehensive test scenarios for various test levels
• Design and create detailed test cases that validate conformance to functional and non-functional requirements
• Prepare and manage essential test data, tools, and environments for test execution
• Execute test cases and scripts, meticulously documenting results
• Drive quality improvement with a strong focus on test automation, while also taking ownership of comprehensive validation activities that include manual testing
• Log, track, and verify defects, ensuring accurate documentation and timely resolution
• Collect, organize, and analyze test results to provide thorough reports on all QA activities
• Analyze testing outcomes and recommend effective solutions for identified issues
• Maintain and update comprehensive test documentation, ensuring coverage for new features and robust regression testing
• Support knowledge management and foster collaboration by actively participating in testing discussions and contributing to continuous improvement through lessons learned
• Act as a Subject Matter Expert (SME) for designated modules, providing critical domain knowledge and support to the QA team
• Provide guidance and support to junior QA engineers, including onboarding and training
• Leverage AI tools such as NotebookLM, Gemini, Cursor AI, GitHub Copilot, and OpenAI APIs to accelerate test case design, automation, and exploratory testing
• Apply prompt engineering and RAG (Retrieval-Augmented Generation) techniques to validate LLM-driven applications, ensuring accuracy, reliability, and robustness
• Work with OpenAI keys, LLM models, and MCP server integrations, automating API-based interactions and securing AI workflows
• Test and monitor AI/ML systems for issues such as bias, drift, hallucinations, and performance deviations

Automation QA Engineer – オートメーションQAエンジニア, New Bank Project

Data Scientist

• Own end-to-end design, implementation, evaluation, and maintenance of machine learning models for prediction, recommendation, anti-fraud, etc. from problem framing to production
• Lead architectural decisions for data science systems. Process, analyze, and visualize user and merchant data, providing data-driven insights that influence product strategy for technical and business divisions.
• Collaborate with data engineers, product managers, and stakeholders to build robust production systems