I know three Yale/Harvard engineering PhDs who wanted to enter academia came up empty their first year on the job market despite having big-time PhD advisors. They had to do a couple years of postdoc at places like UIUC and Georgia Tech to strengthen their CVs, before landing tenure-track positions at T50-T100. Cornell’s and Princeton’s engineering PhDs, on the other hand, gave me the impression that they received offers more frequently straight out of school. Very small sample size, but it does support the perception of graduate engineering programs at different Ivies having different strength.