Many people seem to think there must be something wrong with OP's skills or interview style. I'd just like to point out that it's possible they're a perfectly

Many people seem to think there must be something wrong with OP's skills or interview style. I'd just like to point out that it's possible they're a perfectly competent hire and just got unlucky. If a competent engineer has a 20% chance of passing an interview, the probability that they fail 10 interviews in a row due to pure bad luck is 10.7% (.8^10). The chance that the same competent engineer gets an offer in 3 or less interviews is 50% (.2+.8.2+.8^2.2). So, it makes sense that most competent engineers will believe it's easy to get a job offer (after all, most will get an offer after 3 or fewer tries). However, a small but significant portion of competent engineers will believe it's exceedingly difficult and become disillusioned. The truth is somewhere in between.