David Ratajczak is a member of BCG X, Boston Consulting Group’s tech build and design unit, specifically leading efforts in scaling and accelerating the performance of new and existing digital businesses. He joined the firm in 2007.

David has significant experience driving growth in companies of varying sizes and in various industries. He brings two decades of experience in marketing, pricing, promotion, and data-driven commercial transformations. David has led successful marketing transformations across B2B, retail, CPG, telecommunications, entertainment, airlines, durables, and automotive.

He has expertise and BCG experience in optimization of data-driven targeting, both precision and personalization, in both B2B and B2C contexts, deployment of tool-supported "test and learn" models to improve agility and measurable performance in marketing activities, and application of neuroscience and behavior economics in go-to-market optimization.