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Calvin Chau, PMP, currently serves as a Systems Implementation Professional and Payroll Professional at Optimum Employer Solutions, where responsibilities include managing payroll for over 60 companies, processing confidential client requests, resolving payroll discrepancies, and completing project tasks. Previous experience includes working as a Software Training Specialist at BirchStreet Systems, where Calvin hosted webinars and addressed client inquiries regarding the Procure-to-Pay system. Additionally, Calvin contributed to the academic success of students as a Teaching Assistant and Mentor at the University of California, Riverside, and held various leadership roles within Circle K International, focusing on event planning, committee management, and community service initiatives. Calvin holds a Bachelor of Science degree in Biochemistry from the University of California, Riverside.