I am not familiar with this name.  In a google search of the name, I found the following:

“Armin is a given name or surname and is an ancient Zoroastrian given name in Persian, meaning Guardian of Iran (Iran meaning Aryan land) Son of Kai Kobad, a legendary character in Shahnameh, belonging to the mythical Kianian Dynasty in Persian literature and mythology.”

If this is correct, it is not a good name to choose.

As a parent, you owe it to your son to give him a better and more meaningful name. A name associated with a prophet or righteous person or name with a goodly meaning should be chosen.

There is no shortage of good names to choose.  Instead of Armin, you may do well to call him Ameen which means the trustworthy. Other choices are Haleem (the clement), Hadi (the guide), Sajid (the one who prostrates to God), etc. Abd Allah, Abd al-Rahman, Abd al-Haleem, etc. are also good.

Almighty Allah knows best.