Led QA initiatives for enterprise blockchain applications, implementing a Playwright and TypeScript automation framework from scratch using POM and AI-assisted testing to improve release confidence and regression efficiency.

Contributed to quality assurance for marketing and inventory management systems built on .NET and Angular, utilizing Playwright for automation and AI agents for test case generation.

Provided QA support for sports product applications using Cypress for automation, manual testing, and Jira for bug management, optimizing QA workflows to reduce delivery timelines.

Performed manual and functional testing for iOS and Android mobile applications, ensuring data accuracy through SQL validation and coordinating regression cycles.

Developed Java-based web services and map features, specializing in geographic information services (GIS) like WMS/WFS/WMTS and database validation using PostgreSQL.

Conducted security audits using Blackbox, Graybox, and Whitebox methodologies; identified vulnerabilities using tools like NMAP, Nessus, and Wireshark to improve system integrity.