Ask HN: Share your interview / hiring practices?

What does your interview process look like? How do you decide if someone is the right fit?

We do a phone interview to cover the basics, a tech screen + tech interview and a "do at home" coding exercise. This combination ends up cutting out more than 90% of the people we talk to, but bad seeds are still making it through. In the future, we're going to change our process to have an "in-office" coding exercise, but I would like to be considerate of people's time.

How do you assess the people that apply with you in order to improve the chances of hiring well?