A skilful and pacey left sided player, Naim came through The New Saints academy before establishing himself at Penycae. He is also a Wales International Futsal player.
Conwy Borough manager Darren Moss said: "I am delighted to capture Niam, he's a player I have liked for some time and will be a huge signing for the club."
"He's got great energy and a class left foot, he can play in a number of positions so gives us great options"
"He is still very young and still learning the game, but his potential is massive and I am really looking forward to working with him."