Amazon.com strives to be Earth's most customer-centric company where people can find and discover virtually anything they want to buy online by giving customers more of what they want - low prices, vast selection, and convenience - Amazon.com continues to grow and evolve as a world-class e-commerce platform. Within Amazon, the Selling Partner Services's (SPS) goal is to enable third-party Sellers of any size by helping them build the business they want. We are the Core Selling Partner Experience (CSPE) team which defines, implements, and enforces quality standards for all Amazon-built experiences for all SPs worldwide. We are seeking a highly skilled and experienced Senior User Experience (UX) Researcher to join our team and drive world-class research. The ideal candidate is customer-obsessed, detail-oriented, and passionate about solving complex problems. You should be comfortable with ambiguity, enjoy building from scratch, and be able to tackle challenging issues efficiently. As a Sr. UX Researcher, you will be a key strategic partner to product and design teams, driving user-centered design and decision-making across the organization. You will deliver impactful research for major products or services, shaping our product strategy through data-driven insights.