I applied through other source. The process took 2 weeks. I interviewed at Tessian (London, England) in Feb 2020
Interview
A phone call to assess interest. This was quickly followed by an online coding test. Then a video call coding test with an engineer (about 1 hour). Finally an in person interview at their office. This was 1h45 of technical questions with 2 engineers. Then 45minutes with the Head of Engineering.
Interview questions [3]
Question 1
Design an algorithm for solving the word puzzle, going from a to b changing only one letter at a time, given a dictionary.