Design cohesive support experiences across AI chat, voice, human agents, and self-service account management. The role owns interaction systems across web, mobile, voice, IVR, and agent tooling; conducts research and usability testing; prototypes and specifies high-quality Figma designs; integrates third-party tools; and influences product, engineering, and customer service teams. Candidates must demonstrate conversational or voice UX work, systems thinking, cross-functional influence, and research-driven design through portfolio case studies.