noun
A person who carves seals (hanko/inkan). A specialized craftsperson.
祖父は印刻師として長年働いてきた。
My grandfather worked as a seal engraver for many years.
はんこ屋 is a more casual term for a seal shop or seal maker, while 印刻師 sounds more formal and emphasizes the engraving skill.
Compound of 印刻 (seal engraving) and 師 (master, specialist).