Senior Media Planner, Strategy & Insights

Polymarket•New York, NY

About The Position

Polymarket is the world's largest prediction market platform, enabling individuals to trade on outcomes across various categories. The Growth team is responsible for user acquisition and conversion, operating with a focus on business outcomes and data-driven decisions. This role is central to the media investment function, requiring the individual to build an analytical backbone for accountability. It is not a coordination role; the successful candidate will own the media plan, forecasting, measurement, and reconciliation processes. The environment is event-driven and seasonal, demanding a focus on timing, pricing, and budget size, with an emphasis on finding analytical edges and adapting conclusions based on data.

Requirements

6+ years in media planning, marketing analytics, or growth strategy with real ownership of plans and numbers
Deep fluency across paid channels including search, social, programmatic, video, audio, and offline
Strong quantitative foundation in forecasting and scenario modeling
Strong SQL and comfort in BI tooling
Hands-on experience with mix modeling, incrementality testing, and geographic experiments
Financial rigor and comfort owning a number that has to tie out, including reconciliation, accruals, and working directly with finance through monthly close
Demonstrated ability to compress a complex analysis into a one-page recommendation an executive can act on
Comfort being the person who says spend is off pace, and the follow-through to make sure it gets corrected

Nice To Haves

Background in trading, fintech, or event-driven demand businesses where unit economics and payback are scrutinized closely
Experience building mix modeling in-house or managing a measurement vendor and holding them to a real standard
Technical range in Python or R, or experience building your own analysis infrastructure
Direct ownership of or meaningful contribution to a marketing P&L

Responsibilities

Build the media plan across channels, categories, and geographies, and present a clear, defensible recommendation with tradeoffs and a point of view
Own the forecasting layer covering spend, volume, acquisition cost, payback, and seasonality, and maintain scenario models
Pace spend daily and weekly against approved allocations, flag over and under delivery, and surface when the actual channel or geographic mix has drifted from the approved plan
Lead the measurement approach across mix modeling, incrementality testing, and geographic experiments, and synthesize the outputs into one defensible view
Reconcile every media dollar spent, tying platform spend to invoices, agency billing, and the finance ledger, and own accruals, credits, make-goods, and discrepancy resolution through monthly close
Hunt continuously for edge in auction dynamics, underpriced inventory, seasonality patterns, and competitive activity, and recommend in-flight reallocation with evidence
Build the reporting and analytics layer the team runs on, including dashboards, metric definitions, and a single source of truth