Senior Product Marketing Manager

About Poshmark

Poshmark is the leading fashion marketplace where style comes alive through discovery, self-expression, and human connection. Powered by a vibrant community of 165 million members, Poshmark brings real people and taste to shopping through a social experience shaped by shared discovery. Buying and selling fashion feels simple, joyful, and personal, while every item tells its own story. Poshmark empowers sellers to grow meaningful businesses, keeps fashion in circulation longer, and gives shoppers access to unique and trusted finds, from everyday pieces to one-of-a-kind vintage and luxury.

About the Role

Poshmark is looking for a Senior PMM to own seller-facing go-to-market strategy and lifecycle marketing — two deeply connected motions that drive how sellers discover, adopt, and grow on the platform. You'll sit at the intersection of Product, Growth, CRM, and Creative, translating platform capabilities into messaging and programs that move seller behavior at scale. You’ll also own GTM for Poshmark LIVE, our live shopping experience, and scale it as a core growth channel for sellers and buyers.

This is an IC role with significant scope. The right candidate brings sharp product marketing instincts, a lifecycle and retention mindset, and a genuine obsession with marketplace seller dynamics.

What You'll Own

Go-to-Market

• Lead end-to-end GTM strategy for seller-facing features and platform initiatives — positioning, messaging, channel plans, and performance measurement.

• Partner with Product, Creative, CRM, and Growth to ship launches on time and with measurable impact.

• Translate technical capabilities into crisp, seller-centric messaging and marketing materials.

• GTM strategy for Poshmark LIVE: positioning, launches, and programs that grow host adoption, show frequency, and buyer attendance.

• Build the host lifecycle from first show to habitual host, with education, incentives, and best-practice playbooks that improve show performance.

• Drive buyer demand for LIVE through discovery, notifications, and event moments (themed shows, tentpole events, brand and creator activations).

• Partner with Product and Community to turn host and buyer insights into roadmap priorities and feature messaging.

Seller Lifecycle

• Design and scale lifecycle programs across onboarding, activation, engagement, retention, and reactivation.

• Identify high-leverage behavioral moments where communication or education can shift seller outcomes.

• Work with CRM and Growth to build journeys across email, push, and in-app channels.

Positioning & Insights

• Develop and maintain seller messaging frameworks and value propositions that reinforce Poshmark's differentiated marketplace offering.

• Serve as the internal expert on seller motivations, behaviors, and segmentation — grounded in qualitative research and behavioral data.

• Monitor competitor seller experiences and incorporate insights into GTM planning.

What Success Looks Like

First 6 Months

• Own and ship at least 2 seller-facing feature launches end-to-end, from positioning through measurement.

• Audit the seller lifecycle and deliver a prioritized roadmap of communication and engagement improvements.

• Build trusted working relationships across Product, CRM, Growth, and Creative.

• First 6 Months: Launch at least one LIVE growth program that delivers measurable gains in host activation or show attendance.

First 12 Months

• Drive measurable improvements in seller adoption, activation, and retention through GTM and lifecycle programs.

• Establish scalable messaging systems and lifecycle frameworks that support long-term seller growth.

• Influence the seller product roadmap through customer insights and cross-functional advocacy.

• Be the go-to strategic partner for seller growth initiatives across the org.

• First 12 Months: Establish LIVE as a scalable growth lever, with clear improvements in repeat-host rate, buyer conversion from shows, and GMV from LIVE.

Requirements

Experience

• 5–8 years in Product Marketing, Lifecycle Marketing, or related strategic marketing roles.

• Proven track record managing end-to-end product launches and lifecycle/retention programs in a consumer app, marketplace, or e-commerce environment.

• Experience marketing to sellers, creators, or supply-side marketplace communities strongly preferred.

• Experience marketing live commerce, live streaming, or creator-led products strongly preferred.

Skills

• Strong GTM instincts: positioning, messaging hierarchies, launch planning, cross-functional coordination, measurement.

• Deep familiarity with lifecycle channels — email, push, in-app — and the behavioral data that informs them.

• Exceptional writing and storytelling skills; ability to adapt messaging across segments and channels.

• Comfortable influencing without authority across Product, Creative, CRM, and Growth orgs.

Nice to Have

• Background in resale, fashion, or consumer marketplace businesses.

• Hands-on experience with Klaviyo or similar lifecycle platforms.

• Familiarity with seller education, creator ecosystems, AEO, or organic discoverability strategies.

• Nice to Have: Familiarity with live shopping platforms (e.g., Whatnot, TikTok Shop LIVE) and creator or host growth tactics.