I applied through a staffing agency. I interviewed at Gusto in Jun 2016
Interview
Phone interview with the CTO, about past experience and the interest in Gusto.
Online quiz, closed questions about various languages, data structures, algorithms.
Two online coding sessions, one in Ruby and one in Javascript.
Interviewer helped with writing Ruby code
Interview questions [1]
Question 1
Implement a js method for deep diff between two objects