MY SPICIEST TAKE ON TECH HIRING

Summary from the TLDR newsletter

You only need to administer one technical interview and one non-technical interview, each no more than an hour long, for each candidate. Any interview process longer than that is unnecessary and counterproductive. Adding more interviews makes you less likely to gather the information you need because nobody bears the ultimate responsibility for gathering decisive information. Dragging out the process inadvertently selects for more desperate candidates. People tend to make up their minds on candidates fairly early on in the interview process - drawing out the process doesn't correct for this bias.