Correct

正职

/ zhèngzhí /
Strokes

Definition

main job/day job/steady full-time job (as opposed to temporary or casual)/chief or principal post (as opposed to deputy)

Example

As a Noun

(of an office, department, etc) chief; position of the chief

1
Zhèxiē
这些
lǐngdǎo
领导
yǒude
有的
rénzhèngzhí
任正职
  
,
yǒude
有的
rén
zhí
副职
  

Some of these leaders are chiefs while the rest of them are deputies.

As a Noun

main job/occupation; principal profession

2
de
zhèngzhí
正职
shì
zuòjiā
作家
  
,
tóngshí
同时
hái
zuò
jiānzhí
兼职
jiàoshī
教师
  

She is a writer by profession, but she's also a part-time teacher.