He was doing this yesterday on EU_1, he was, unfortunately helping the team by throwing down siege shields in front of allies on a hill but it appears that he has been doing it for far too long just in order to leech. I did notice him running around without a weapon towards the end of the round but against my better judegement, I didn't ban him.
In this case, since he quite clearly isn't helping anyone, he will recieve a one day ban and this thread will be here to show him that he should help the team, which is completely viable by being an engineer but not just be creating things and then doing nothing.
If he ignores this the ban length will increase, as I say, it's completely viable for you to be an engineer, but actually help the team, not just leech.