So far I love the Stanford atmosphere (I am a CS student). Is it competitive? Yes, but I have found that CS isn't as competitive as pre-med. I only have ok grades (3.0 GPA at the moment) but the classes themselves I am learning a lot in, so grades aren't too much of a concern to me.
As far as jobs, Stanford engineering does a very good job putting together career fairs. We have 2-3 a year, plus a start-up fair, and a nonprofit fair. I have accepted an internship for the summer so I think internship placement is fairly good.
Also Stanford has a very good financial aid program, how much are your parents making?
If you have any more questions about Stanford I will do my best to answer!