Binod Charukshi Wijesinghe Unagollage

Software Test Engineer @Refeyn

Oxford, GB

Led QA strategy for new product innovations, including the £110K+ patented KaritroMP, delivering full-cycle system-level, UAT, and Factory Acceptance Testing under ISO 13485 and FDA regulations.• Developed and executed 500+ validation and regression test cases across 11 hardware/software configurations, ensuring 95%+ User Acceptance Testing pass rate and reducing post-release defects by 30%.• Designed and implemented automated regression tests using Playwright and JavaScript, integrated with GitLab CI/CD, to streamline release verification and reduce test cycle time.• Built robust automation scripts targeting UI workflows and critical firmware integrations, increasing coverage of high-priority test cases by 40%.• Maintained and executed test automation suites alongside manual test cycles to validate cross-browser compatibility and ensure fast feedback on critical defects.• Performed comprehensive system testing to validate end-to-end functionality, ensuring seamless integration between software modules and hardware components in alignment with project requirements and ISO 13485/FDA standards.• Coordinated 200+ defect triages using Jira, TestRail, Xray, and Zephyr, achieving full traceability and improving issue turnaround time by 20%.• Set up and maintained virtual machines and AWS-based environments, simulating edge-case usage conditions for both manual and automated test scenarios.• Participated in exploratory sessions and stakeholder reviews to gather feedback and iterate on usability issues early.• Authored formal QA deliverables including test closure reports, traceability matrices, and audit-ready evidence for CE and GMP certification.• Mentored junior testers on both manual and automation practices, reducing onboarding time by 40% and promoting reusable test asset development.• Validated Refeyn’s GMP-compliant SaaS platform across 10+ clinical lab environments, contributing to a 95%+ customer satisfaction rate at product launch