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Crystal Siu is a Senior Quality Assurance Engineer with extensive experience in testing and improving product quality across various platforms including Web, CMS, iOS, and Android. Currently employed at Ïã¸Û01 since January 2021, Crystal is responsible for implementing and enhancing product quality, as well as designing and executing test cases. Prior roles include Senior Quality Assurance Engineer positions at LKK Health Products Group Ltd. and Cityline (Hong Kong) Limited, where responsibilities involved managing testing teams, designing test plans, and executing both manual and automated test cases. Additional experience includes a role at PCCW as a Senior Quality Assurance Executive and earlier positions at cherrypicks, where Crystal developed skills in team management and performance monitoring.