1) An incendiary 2) Boss, at times 3) Canning specialist 4) Company hatchet man 5) Furnace tender 6) Hatchet man, at times 7) Igniter 8) Kiln operator 9) One axing 10) One with an ax 11) Personnel chief, at times 12) Personnel director, at times 13) Pink slip issuer 14) Pink-slip issuer 15) Pottery worker 
• (n.) One who fires or sets fire to anything; an incendiary.
Fir'er noun One who fires or sets fire to anything; an incendiary. [ R.] R. Carew. 
A person who fires people.