My interview process was as follows: - Phone screen with a recruiter - Take-home coding test (48 hours) - 1 hour coding review - 2 1-hour algorithms interviews The coding test was pretty standard for a take-home test, it's up to you how many of the 48 hours you want to put in to get it up to your standards. The interviews that followed were all back-to-back with small breaks. For the coding review make sure to prepare on how you would deploy or scale your solution and brush up on the technologies involved. Leetcode makes good practice for the algorithms interviews, but the interviewers were very helpful throughout. Overall my experience was very positive and the recruiter who was handling my application process was very nice and checked in with me throughout! And you can tell Thought Machine gives a lot of value to good engineers.

The process at Thought Machine begins, uniquely, with a cultural test - essentially a drinks & mingling session with some current developers and other applicants, with a talk with the CEO halfway through. They then decide if you would fit in culturally there before sending you a 48 hour coding challenge. If they like your solution, you are then brought in for 3 final back-to-back interviews with their engineers - a reivew of your code; an algorithm task; and depending on your experience, either another algorithm task or a system design task.