INFJs with ”thinker jobs”

English isn’t my first language, so ”thinker jobs” for a lack of a better term.

I’m wondering how many of you have jobs that are more stereotypical to thinkers, such as programmers, mechanical engineers, IT, etc? And what is your approach to these types of jobs, if you don’t have anything like it? Do you think ”ew” or would you be fine working in them?

I have a friend who I suspect is an INFJ, but his Ti throws me off so hard. One best friend of mine is INTP, and that’s why I just cannot see this other friend as a Ti-dom; they’re so extremely different, and this guy is very emotional and clearly has pretty high Fe. But he’s studying some engineer type with loads of math and physics, and generally has an internal framework etc, etc. I’m just wondering if perhaps this all might still be common for INFJs?

And sorry, I’m not trying to stereotype with the jobs. But it just throws me off.