How is this different from a technical writer?
Technical writer writes docs outside the product (API reference, tutorials, help center). UX writer writes the words inside the product (button labels, errors, onboarding tooltips). The skills overlap but the surface is different — technical writing is explanatory, UX writing is functional. On small teams you often want both because the work is large; on very small teams the AI Technical Writer role can cover UX writing at a lower depth, and you upgrade to a dedicated UX writer when in-product copy volume grows.