My industry is related to the power grid. I've worked at two amazing companies. The first had me come out for a 3 hour interview for a summer internship where they accessed my work ethic and culture fit. Once I graduated, I was immediately given an offer letter. The second job required most of a day to interview and I had to prepare a PPT and then got an offer. I also interviewed for another gig that did like four one-hour interviews spread out across a month. What software developers do sounds like absolute hell. My industry has very high demand and very low supply of experienced candidates at the moment though.