Manager, Product Marketing

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 seeking a strategic and execution-oriented Manager, Product Marketing to lead seller-focused go-to-market initiatives and lifecycle marketing programs that drive seller growth, engagement, and retention across the marketplace. This role sits at the intersection of Product, Growth, Creative, and Community, translating platform capabilities into clear, compelling seller value propositions and customer experiences.

Responsibilities

• Lead end-to-end GTM for seller-facing features and platform initiatives — positioning, messaging, channel strategy, launch execution, and measurement.
• Translate product capabilities into crisp seller value propositions that drive adoption and behavior change.
• Partner with Product, Creative, CRM, and Growth to ship launches that hit business targets, not just ship dates.
• Design, optimize, and scale seller lifecycle programs across onboarding, activation, engagement, retention, and reactivation stages.
• Identify key behavioral moments and intervention opportunities where communication, education, or product awareness can improve seller outcomes.
• Partner with CRM and Growth teams to develop lifecycle journeys across email, push notifications, in-app messaging, and other owned channels.
• Develop and maintain seller-facing messaging frameworks, value propositions, and positioning strategies that reinforce Poshmark’s differentiated marketplace offering.
• Create channel-specific messaging and copy that effectively communicates seller benefits, platform capabilities, and community value.
• Ensure consistency of voice, positioning, and seller education across customer touchpoints and campaigns.
• Be the internal authority and expert on seller motivations, segments, and behaviors — grounded in qualitative research, data, and direct community engagement.
• Leverage qualitative research, behavioral data, and marketplace insights to inform product marketing and lifecycle strategies and value proposition that reflect Poshmark’s unique marketplace positioning.
• Monitor the competitive landscape for seller tools and experiences; translate findings into strategic recommendations.
• Act as a strategic bridge between Product, Growth, Creative, CRM, and Community teams.
• Translate product priorities into actionable marketing briefs and customer communication plans.
• Influence cross-functional stakeholders through strong collaboration, strategic thinking, and customer-centered advocacy.
• Model what excellent PMM work looks like — sharp briefs, rigorous positioning, outcome-oriented launches — for a team that is developing its craft.
• Contribute to how the PMM function operates: processes, frameworks, and standards that scale beyond any one project.

Requirements

• 5–8 years of experience in Product Marketing, Product Management, Lifecycle Marketing, or related strategic marketing functions with a track record of doing the core work: positioning, launch strategy, lifecycle programs, customer insights.
• Strong experience leading both go-to-market initiatives and lifecycle or retention programs within a consumer app, marketplace, platform, or e-commerce environment.
• Experience marketing to seller, creator, supply-side, or marketplace communities and understands what motivates them.

Skills

• Proven GTM instincts — can build positioning from scratch, develop messaging hierarchies, plan and execute launches end-to-end, and measure what matters.
• Knows how to write a creative brief that actually guides the work, and a positioning doc that holds up under cross-functional scrutiny.
• Deep familiarity with lifecycle channels — email, push, in-app — and the behavioral data that informs when, what, and who to message.
• Has designed programs that change behavior across a user journey, not just sent campaigns.
• Sharp strategic thinker who can develop a point of view from ambiguous inputs and bring leadership along.
• Comfortable operating without a full playbook — can set direction, make judgment calls under pressure, and create structure where there isn’t any.
• Strong enough instincts to coach others on PMM craft, not just execute it themselves.
• Exceptional writer across formats — positioning docs, seller-facing copy, internal briefs, exec comms.
• Can adapt voice and message for different seller segments and channels without losing clarity or conviction.

Nice to Have

• Background in resale, fashion, or peer-to-peer marketplace businesses.
• Hands-on experience with Klaviyo or a comparable lifecycle platform.
• Familiarity with seller education, community-led growth, or organic discoverability strategies.
• Prior experience managing or formally mentoring PMMs.