I've just moved from a startup where "designer" meant doing everything—research, mockups, even writing button text. Now I'm at a larger company building out a proper UX team, and I'm hearing titles like "UX Researcher," "Product Designer," and "UX Writer." I understand they're specialized, but I'm struggling to define clear boundaries and handoffs. For those who work in structured teams, how do these core UX team roles typically break down? Where does one person's job end and another's begin to avoid gaps or overlap?

That's a fantastic and very common question when scaling design. The shift is from generalists to a collaborative ensemble where each role brings deep expertise to a shared user-centric goal. Think of it this way: the UX Researcher is the voice of the user, responsible for uncovering needs and validating assumptions through studies and data. The Product Designer (or Interaction Designer) is the architect of the solution, translating those insights into workflows, structure, and visual interfaces. The UX Writer is the craftsperson of the interface's language, ensuring every word is clear, consistent, and guides the user. They don't work in a sequence but in constant collaboration. The researcher informs the designer's decisions, and the designer and writer work in tandem to build a cohesive experience. For a clear, detailed breakdown of these roles, their responsibilities, and how they fit together, this guide on UX team roles is one of the best resources I've seen. It will help you map out the competencies and collaboration points for your team structure.