Growth Product Manager, Marketing Technology

About PoshmarkPoshmark 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.Role OverviewThis role sits at the intersection of product, data, and customer communication. You will own Poshmark's marketing technology stack, including our customer engagement platform (CEP), customer data platform (CDP), email, push notifications, promotional systems, and CRM strategy for our merchandising and seller teams.The work here is both strategic and deeply technical. On any given week you might be evaluating CDP architecture decisions, running send time optimization experiments, defining segmentation logic for a seller re-engagement campaign, or partnering with engineering to improve our transactional email template system. The common thread is that you own the infrastructure and the outcomes, not just the roadmap.The growth pod is lean and expects a lot from each PM. You will work directly with the Head of Growth Product and partner daily with DS/ML, engineering, marketing ops, and the merchandising team. The expectation is that you show up with a clear point of view, document your work rigorously, and hold yourself accountable to channel performance, not just feature delivery.Poshmark is also in the middle of an AI transformation that is changing how product development works. PMs on this team use AI tools actively to prototype, build, and ship, and this role is no exception.What You Will OwnCustomer Engagement Platform (CEP) and Channel OrchestrationThe CEP is the system of record for how we reach our buyers and sellers across push, email, in-app, and SMS. You will own the product strategy for how to scale and use it.Define the orchestration logic across channels: which message, to which user, through which channel, at what momentBuild and refine audience segmentation strategy across buyer lifecycle stages and seller engagement tiersLead personalization initiatives including our ML-powered delivery timing program, working closely with data science on model inputs, evaluation, and rolloutEstablish standards for how the team builds, tests, and iterates on campaigns within the platform so quality is consistent and learnings compoundCustomer Data Platform (CDP) and Data InfrastructureYou will own the implementation strategy and long-term product roadmap, connecting our Redshift data warehouse to downstream engagement tools to improve how we build audiences and activate data at scale.Define the data model for how customer attributes, behavioral signals, and lifecycle events flow from our data warehouse into our engagement systemsPartner with data engineering to ensure audience definitions are accurate, refreshable, and auditableOwn the roadmap for how we expand CDP usage over time, including new activation use cases across email, push, and paid channelsTargeted Lifecycle MessagingEmail, push, and promotional messaging are your highest-reach owned channels. You will own the product strategy across all three, setting standards for message quality, channel coordination, experimentation, and performance.Set the standard for email and push quality and deliverability health, partnering with engineering and marketing ops to monitor performance and resolve issues quicklyRun structured experiments to improve open rates, click rates, and downstream conversion from push touch pointsOwn the product layer for promotional campaigns including discount mechanics, offer construction, audience targeting, and measurementDefine how promotional events interact with our broader lifecycle programs so messaging is coordinated, not redundantPartner with merchandising and the seller team to design CRM-driven promotional programs that serve both sides of the marketplaceCRM for MerchandisingPoshmark's merchandising team manages both shopper and seller relationships, category health, and supply-side growth. You will own the product that gives the merchandising team genuine visibility into their shopper and seller base and the ability to activate them through personalized communication at scale.Build the product workflows that allow the merchandising team to trigger targeted, interest-based outreach at scale without requiring engineering every time, shifting the communication model from program-driven batch sends toward user-centric engagementPartner with the merchandising team to understand their shopper and seller communication needs and translate those into durable platform capabilitiesWhat We Are Looking ForMartech Platform Expertise4+ years in a product management or growth engineering role with direct ownership of a martech stackHands-on experience with a customer engagement platform (MoEngage, Braze, Iterable, Salesforce Marketing Cloud, or similar) at a product or implementation level, not just a user levelWorking knowledge of how CDPs function: data ingestion, identity resolution, audience construction, and downstream activationComfort with the data layer: SQL fluency, understanding of event schemas, and ability to work directly with data engineers on pipeline and model designComfortable reading API documentation, reviewing data schemas, and holding a technical conversation with engineers and data scientists as a peerExperimentation and MeasurementTrack record of running structured experiments across owned channels with proper methodology: experiment sizing, holdout groups, attribution, and incremental lift measurementUnderstanding of the difference between correlation and causation in lifecycle data, and how to design tests that actually answer the question you are askingExperience working with incrementality measurement frameworks is a plusExecutionWilling and able to use AI-assisted development tools (Codex, Claude Code, or equivalents) to build prototypes, draft specs, and accelerate your own outputYou own channel performance, not just feature launches. If email open rates drop or push opt-outs spike, you are the first to diagnose and address the problemYou build strong working relationships with engineering, data science, and marketing ops proactively, not reactively when something breaksYou communicate decisions and tradeoffs to senior leadership with a clear point of view, not a list of optionsNice to HaveExperience at a consumer marketplace with active seller and buyer communication programs (Etsy, eBay, Whatnot, Depop, or similar)Background in email deliverability: domain reputation, list hygiene, ISP relationships, and inbox placementPrior work on AI-driven personalization systems, recommendation-based messaging, or predictive audience modelsExperience integrating a composable CDP (Hightouch, Segment, or similar) with a downstream engagement platformCompensation Range: $109K - $170KLocationUS California (Redwood City) - OfficeEmployment TypeFull timeLocation TypeHybridDepartmentAll DepartmentsResearch & DevelopmentProductProduct Management TeamCompensation$109K – $170KThe base pay range listed for this position may span multiple levels of experience, and final compensation is determined by a variety of job-related factors, including relevant experience, demonstrated expertise, and internal equity.The posted range applies to base salary only and does not include additional elements of total compensation, which may include equity, performance-based incentives, and a comprehensive benefits package.