There are prospect databases like Apollo.io and zoominfo that let you filter based on prospects new to their job. Add that to a company size/stage/revenue filter and you should be at least 80% there.
Alternatively, you might consider scraping relevant job sites/forums/boards for job postings for UX research/designer.
Alternatively, you might consider scraping relevant job sites/forums/boards for job postings for UX research/designer.
I hope this helps. Good luck!