Nafilul Mubin

I’m currently working as a Quality Assurance with a strong focus on test automation, end-to-end testing, and ensuring product reliability across complex features such as payments, checkout flows, and user experience validation.

I have experience building and maintaining automated test frameworks using tools like Playwright, Robot Framework, Cypress, and Postman for API testing. My work also includes creating clear test strategies, designing regression test suites, identifying edge cases, and collaborating closely with developers, product managers, and designers to ensure smooth releases.

I’m comfortable working in fast-paced environments, handling UAT coordination, analyzing production issues, and providing clear, data-driven reports to stakeholders.

QA Specialist — Focus on Automation & Payments

• Designed and executed automated test scenarios for critical modules such as checkout, shopping cart, discount coupons, and PayPal/credit-card payment flows.
• Built and maintained automated testing using Playwright + TypeScript, including reusable test components and environment configuration.
• Led regression testing efforts, ensuring all payment methods, limits, and anti-fraud logic worked as expected.
• Investigated production issues by reproducing errors, checking logs, validating webhook behavior, and coordinating with dev teams.
• Owned UAT coordination across multiple countries (TW, MY, ID), reviewing feedback and validating issues end-to-end.
• Improved test coverage by documenting detailed test cases, boundary scenarios, stress tests, and negative test cases.
• Collaborated with product and engineering teams to improve overall QA processes and testing efficiency.

• Reviewed UI/UX flows, detected inconsistencies with design systems, and flagged issues with user behavior.
• Performed cross-browser and cross-device validation.
• Created structured test reports, defect tracking, and daily testing summaries for stakeholders.

• Automation: Playwright (TS), Cypress, Robot Framework
• Manual Testing: Functional, Regression, Exploratory
• API Testing: Postman, Swagger
• CI/CD: GitHub Actions, basic pipeline integration

• Bachelor Degrees - Information System - Bina Nusantara University