John McDonald

COO at Poshmark

John McDonald is the Chief Operating Officer of Poshmark, where he oversees product and marketplace operations. Prior to Poshmark, John served as Vice President of Sales and Support and then as General Manager at Ning, a platform to create a social media network. Earlier in his career, John focused on consumer marketing and product development at Procter & Gamble, Monsanto, the Monitor Company, and Evite. John holds an M.B.A. from Harvard Business School and a B.S. in Chemical Engineering from the University of California, Berkeley.



  • COO

    Current role