Director, Supply Partnerships

Poshmark

Director of Supply Partnerships at Poshmark, enhancing marketplace liquidity and driving GMV growth through strategic supplier relationships and partnerships management.

Posted 4/12/2026full-timeRedwood City • California • 🇺🇸 United StatesLead💰 $172,900 - $289,600 per yearWebsite

About the role

Key responsibilities & impact

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.
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 and best practices, and campaign and promotional strategies and timelines
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 to improve partner businesses
Collaborate with Trust & Safety to uphold Poshmark’s 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

What you’ll need

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
Experience leading or building teams preferred
Bachelor’s degree in Business, Marketing, Economics, or a related field (MBA a plus but not required)

Benefits

Comp & perks

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Hard Skills & Tools

commercial agreementspartner acquisitionaccount managementcategory managementmarketplace growthpricing strategyperformance metricsdata analysisstrategic relationshipssupply-demand balance

Soft Skills

negotiationcommercial acumenownership mindsetcross-functional collaborationanalytical orientationteam leadershiprelationship managementstrategic thinkingcommunicationproblem-solving

Certifications

Bachelor’s degree in BusinessBachelor’s degree in MarketingBachelor’s degree in EconomicsMBA