The problem is on both sides. Companies are sometimes too selective and too indecisive. Many candidates can't code well. I screen candidates all the time. I

The problem is on both sides. Companies are sometimes too selective and too indecisive. Many candidates can't code well. I screen candidates all the time. I regularly meet Sr. Java Engineers who are not aware of the classes that exist in the standard collections framework and can't pick the right one for the job. People who claim to be "performance experts" who can't explain how a HashMap performs an addition in amortized constant time. I get it -- this is not required knowledge for all roles. But don't call yourself an expert and use some judgement as to the kinds of roles you apply for.