After checking the old post, I found this Difference between 'it fits something' and 'it is fit for something' -- "The key fits the lock" vs. "The key is fit for the lock" quite informative. However, I still have some doubts on fit.
What is the exact difference of below 2 sentences, or are they identical?
In spoken English, do native people say: 'this guy is fitting for the job', and 'this guy is fitting the job'?
The two sentences are nearly identical, the only nuance is that #2 is a bit stronger. You imply that the whole resume fits. "the resume is fit for" means that it satisfies all your basic criteria.
As for the use of "fitting", the -ing end is used very sparingly in English as someone has to be actively doing something right now before it is used. So in 99% of cases you would use use "fits the job" or "fit for the job".
You could use "is fitting for the job" if you are holding his resume and discussing it with a coworker but if you are unsure of your English: just avoid -ing because ususally you won't need it.
