Director, Supply Partnerships

Responsible for identifying and developing strategies and programs to onboard and scale strategic supply sources that strengthen Poshmark marketplace liquidity, elevate assortment quality, and drive incremental GMV growth on the platform. Own the development of strategic relationships with brands, retailers, resale ecosystems, enterprise sellers, and top-tier power sellers to ensure the platform has the “right” supply at the right volume, quality, relevance, and price to drive GMV growth and brand stickiness.

Responsibilities

Identify and develop strategies and programs to onboard and scale strategic supply sources; Strengthen Poshmark marketplace liquidity, elevate assortment quality, and drive incremental GMV growth; Own development of strategic relationships with brands, retailers, resale ecosystems, enterprise sellers, and top-tier power sellers; Define and execute the enterprise and strategic supply roadmap across brands, retailers, consignment partners, and large-scale sellers; Identify category opportunities; Build models for partner sourcing, programming, onboarding, enablement, retention, and expansion; Own partner acquisition targets, GMV contribution growth, and take rate; Structure and negotiate commercial terms; Track partner performance across key metrics including listing quality and activation, sell-through speed, pricing alignment, returns, cancellations, and disputes; Manage relationships and contracts; Build scalable programs for partner onboarding, education, and success; Build a strong partnerships team across acquisition, account management, partner success, and commercial operations; Collaborate with Product and Marketplace teams to ensure partners leverage pricing guidance tools, listing standards, best practices, and campaign and promotional strategies; Partner with Merchandising to align supply inflow with demand, category health, and trend direction; Work with Product and Product Marketing to shape seller-facing tools, dashboards, and messaging; Collaborate with Trust & Safety to uphold standards around authenticity, fraud prevention, and community trust; Align with Operations and Customer Support to ensure seamless seller and buyer experiences; Provide insights on emerging supply trends and competitive activity; Identify white space opportunities where targeted supply partnerships can unlock growth and/or improve discovery; Share learnings from partners to inform broader seller strategy and marketplace policy

Requirements

8–10+ years of experience in partnerships, business development, marketplace growth, category management, or commercial strategy within ecommerce, retail, resale, or marketplace environments; Proven track record of structuring and negotiating commercial agreements that drive measurable revenue or GMV growth; Strong understanding of marketplace dynamics, including liquidity, supply-demand balance, pricing strategy, and seller performance metrics; Experience working with brands, retailers, enterprise sellers, or resale ecosystems; Demonstrated ability to build and scale partner acquisition and account management programs; Strong commercial acumen with an ownership mindset for revenue, margin, and partner performance metrics; Experience building cross-functional relationships with Product, Merchandising, Operations, Trust & Safety, and Marketing; Analytical orientation with the ability to translate performance data into actionable strategy; Bachelor’s degree in Business, Marketing, Economics, or a related field

Nice to have

Experience leading or building teams; MBA