I just graduated in Electrical Engineering in July 2016, and I just started working a few weeks ago at a defense contractor. I need to get a security clearance which could probably take several months. The job clearly states that I need to be able to obtain a security clearance. They didn't really specify any deadline for it. Right now I'm just working on uncleared stuff involving hardware engineering. I'm done filling out the E-QIP and will be turning it in soon.
My problem is I've used marijuana plenty of times in college, probably 15 to 20 times, spanning from 2010 to 2015. Most of it is spanning from 2010 to 2014 at random times. I smoked once in September 2015. I've also tried ecstasy in 2013 at a rave. I've been clean since September 2015. The rest of the form was a breeze to fill out. No arrests/foreign affiliations/etc.
I wrote all of this on my online form except much more detailed. I don't know if my detailed explanation is too much though. I feel like my truthfulness is going to hurt me, however, I've been told to be as truthful as possible. I wrote a detailed explanation on things that could mitigate this. This is my first time dealing with this and I'm fearful of losing my first job outside if I can't get a clearance. Don't want to go back to flipping burgers!!!!!!