차장이 · 차장을
deputy general manager (rank between 과장 and 부장)
Example
김 차장님은 오늘 출장을 가셨어요.
Deputy Manager Kim went on a business trip today.
Word parts
차 next+장 head
Literally 'next head' — the rank just below the 부장.
Good to know
Add 님 when you address or mention a superior: 차장님, not just 차장.