You gotta put a little more effort in, man. At the time you posted this, Jacquemort's "Psi-Assassin-Trapper" topic was still on the first page of the Builds subforum. There were also at least five other psi build guides on the first page in addition to the Psi-Assassin-Trapper.
Traps isn't a build. It's a single skill that's an addition to a build. It benefits from stealth, so if you want to use traps to their utmost potential, some stealth will help. Otherwise, just read a few posts, find a psi guide you like, and make room for traps in it if it doesn't already have some points left for the skill.