nail technician; manicurist
A professional who does nail art, manicures, and pedicures. Wasei-eigo from 'nail (sty)list'; not a direct English borrowing.
wasei-eigo (Japanese-coined English), from nail (sty)list
She works at a salon as a popular nail technician.
To become a nail technician, you need to learn the skills at a vocational school.