William Postema
Prev. World Wide Sales @Apple | Supply Chain, Sales & Merchandising Strategy | Executive Board - Young Erie Professionals 501(c) | Latino in Tech
- Role
- Executive Secretary & Chief Governance Officer at Young Erie Professionals
- Location
- Erie, PA, US
- LinkedIn followers
- 500 followers
About William Postema
As Walmart’s Digital Team Lead, I oversaw operations for online pickup and delivery, driving $19.5 million in sales with 25.8% year-over-year growth. In my role as Food and Consumables Team Lead, I managed merchandise operations for a $130 million supercenter and earned recognition in the exclusive “$100 Million Club” for fiscal year-end 2023. At Apple, I excelled in the inaugural cohort of the prestigious capstone program, leading digital sales initiatives with top retail partners, driving targeted campaigns, and presenting a high-impact project to senior leadership on launching Vision Pro into the education market. Currently, I serve on the Executive Boarding of Young Erie Professionals (YEP) as Executive Secretary & Chief Governance Officer (ES & CGO). In this role, I help ensure strong nonprofit governance and continuity by maintaining bylaws, overseeing board operations, and supporting leadership onboarding and documentation across all standing committees. YEP is a 501(c)(6) nonprofit committed to engaging members through networking, community events, and professional development in the Greater Erie Area.
Experience
Executive Secretary & Chief Governance Officer
May 2025 — Present · Erie, PA, US
Education
Fairview High School
High School Diploma
2017 — 2021
Penn State Erie, The Behrend College
Bachelor’s in Project and Supply Chain Management
2022 — 2023
Gannon University
Dual Enrollment
2020 — 2020
University of Arkansas - Sam M. Walton College of Business
Bachelor's degree
2023 — 2026
Penn State Erie, The Behrend College
Bachelor's degree
2022 — 2023
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