ironist; sarcastic person; satirist
Refers to a person who habitually makes ironic, sarcastic, or cutting remarks. Often used for someone with a sharp tongue.
He's such a sarcastic person that even his compliments sound snide.
That writer is known as a satirist who critiques society.
Compound of 皮肉 (ひにく, 'irony, sarcasm') and 屋 (や, suffix for a person with a certain trait or occupation).