Summary
Oliver Stewart is a Director of Growth & Marketing Research with 15+ years blending social science, HCI, and product research to drive customer-centric growth for both B2B and B2C businesses. He currently leads growth and marketing research at Wealthfront while advising monetization and revenue-diversity efforts at YouTube, having previously built international growth and health-research functions at Twitter. Trained as a behavioral scientist with a PhD in Experimental Psychology and HCI from the University of Edinburgh, he translates qualitative and quantitative data into actionable roadmaps that align product, market, and business strategy. Known for cross-functional collaboration, he brings academic rigor to fast-moving product teams and keeps human factors central to decision making. A less obvious strength is his editorial experience with major psychology journals, which sharpens his ability to synthesize evidence and communicate persuasive, research-backed narratives.
15 years of coding experience
8 years of employment as a software developer
Doctor of Philosophy (Ph.D.) Experimental Psychology / Human Computer Interaction, Doctor of Philosophy (Ph.D.) Experimental Psychology / Human Computer Interaction at The University of Edinburgh
Bachelor's Degree Linguistics, Bachelor's Degree Linguistics at University of Leeds
English