Harriet Speller is a Principal at Efficio, where responsibilities include embedding efficiencies within supply chains and focusing on vendor services since August 2021. Prior experience includes a role as a Global Mobility Transformation Consultant at Deloitte UK, assisting organizations in optimizing their Human Resources operations from September 2014 to August 2021. Additional positions held range from Assistant Analyst at GlaxoSmithKline during a 2013 internship, to a Ski Instructor, Radio Traffic Control at major music festivals, Summer Camp Counselor at YMCA, Junior Ecotoxicologist at ADAS, and Crew Member at McDonald's Corporation. Harriet possesses a Bachelor of Science in Mathematics from the University of Leeds, complemented by A-Levels in multiple subjects from Hills Road Sixth Form College.
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