My company tends to hire more junior developers, I've been pushing for years to raise our requirements for certain teams, but its a cultural understanding problem from people at the top. Coding tests are the only strong indicator I've found for the interviewing process. I've had candidates talk their way through all of the other steps, only to find they can't code their way out of a paper bag. I really think the only accurate way to tell how well someone codes, is by looking at their code, and a coding test is a good way of not only doing that, but also comparing code from one developer to another in a controlled manner. I'll take it over hackerrank and other similar shitty websites any day.