a job or series of jobs that you do for only a short time, and does not lead to you getting better jobs

I had a noncareer in marketing.

a non-career as a jazz drummer 一份没有前途的爵士鼓手的工作

chosen for a job as a member or supporter of a political party or government, not because you always do this job and have experience or training in it

The president appointed several noncareer diplomats as ambassadors. 总统任命了几位非职业外交官为大使。

doing a particular job, often for a short time, that does not lead to you getting better jobs, or relating to a job like this

You may have to start off by taking a non-career job in a shop. 你可能要从在商店里做没什么前途的店员工作开始。