Jacin Mardo

• Built and enhanced scalable automation frameworks utilizing Playwright (JavaScript), Selenium, and Selenide, cutting production defects by 30–40% via early bug detection. • Initiated and led cross-platform performance testing using JMeter, Prometheus, and Grafana • Executed extensive end-to-end data integrity testing across complex B2B SaaS microservices utilizing Snowflake, PostgreSQL, and AWS. • Consistently maintained a 95–100% QA ticket completion rate within tight Agile sprint timelines

• Client-Facing Delivery: Embedded directly within the Demand Science ecosystem to engineer test plans, API cross-browser validation matrices, and end-to-end test scenarios. • Capability Building: Authored a comprehensive internal QA training curriculum covering advanced automated frameworks, manual execution models, and API verification strategies. • Mentorship: Conducted technical career-mapping and structured coaching loops for junior testing staff, boosting overall team test automation coverage.

• Cross-Functional QA: Bridged the gap between product management and engineering by validating new audio software releases and designing feature- requirement user interfaces. • Data Analytics: Analyzed high-volume transaction datasets via advanced Excel models to identify user friction points, successfully increasing sales-per- download figures.

• Release Coordination: Appointed as central Release Coordinator for the ING Mobile Banking Application, managing cross-team bug resolution streams across product owners and developers. • Agile Defect Tracking: Authored edge-case test documentation and targeted regression suites to catch critical functional defects prior to production.

• Integration Testing: Managed automated software maintenance scripts, quality thresholds, and regression testing for over 20 international enterprise partner integrations.