I don’t work / I'm not working for that company now. I left that job last year.

[Mike MC]

I don’t work / I'm not working for that company now. I left that job last year.

I wonder which to choose: the present simple or progressive. I guess the right tense is the present progressive, but I'm not sure.

 

[emsr2d2]

I don’t work/I'm not working for that company now. I left that job last year.

I wonder which to choose: the present simple or progressive. I guess the right tense is the present progressive, but I'm not sure.

You can use either. Don't put a space on either side of a slash mark.

 

[Tarheel]

I would probably say, "I don't work for them anymore." However, as previously noted, either is possible.

 

[jutfrank]

Which tense to choose would depend on what you really mean to say. This is the normal difference between present simple and present continuous, where the latter focuses on the time frame as a temporary period.