He works as an accounting clerk.
attendant; caretaker; person who looks after someone's needs
reservation desk; booking counter
accountant; cashier; treasurer
store detective; security officer
Standard kanji spelling for the suffix meaning 'person in charge of'.
Often used for government offices, railways, etc., per usage note.
Suffix derived from the noun 係 (かかり), meaning 'person in charge' or 'duty'.