Contract Performance Marketing ManagerDuration: 3 months (immediate start)IR35 Status: Outside IR35Location: Fully Remote WorkingWe''re supporting a rapidly scaling online marketplace in hiring a contract Performance Marketing Manager on a contract basis. This is a hands-on, specialist role focused on owning and optimising Google Shopping and PMax performance at scale across a large, complex product catalogue.This is a high-impact, hands-on role for a true specialist in Google Shopping and PMax, operating at serious scale across millions of SKUs. This is not a strategy position, you''ll be deep in the detail, owning performance end-to-endKey ResponsibilitiesOwn Shopping and PMax ArchitectureDesign and manage full campaign structures (tiers, priorities, listing groups)Build scalable frameworks across large SKU catalogues (100K-1M+)Control PMax vs Standard Shopping interplay for optimal performanceImplement advanced segmentation using feed-driven logic and custom labelsFeed, Merchant Centre and Data IntegrityOwn Merchant Centre health: diagnostics, disapproval''s, feed rulesTranslate commercial inputs (margin, seller quality, pricing) into feed logicBuild robust labelling systems to drive performance segmentationPerformance OptimisationOptimise towards incremental revenue and contributionLeverage SKU-level economics, propensity modelling, and performance cohortsLead daily trading decisions - spotting issues and deploying fixes fastEfficiency and ScaleReduce wastage across queri