The initial application stage was fairly straightforward. The application page provided sufficient detail as to what Twilio were looking for in a candidate. The application form asked a number of questions relating to the core values.
The next stage was a 2 hour technical test on hackerrank, comprising of two technical questions. In preparation for this, we were given information and materials by the recruitment team which was pretty helpful for those going through this type of application process the first time.
As the Hatch programme targets those from non-cs degree backgrounds (I came from a bootcamp), the hackerrank test reflected this. The two questions focused on general problem solving, rather than any tricky data structures & algorithm questions you might get usually get (thankfully!).
The third stage comprised of further written application, again focusing on whether you understood the company values, and would make a good cultural fit at the company, which was relatively straightforward to complete.
The final stage comprised of an interview day(s), which included 2 x technical interviews, and 2 x behavioural interviews, all 45mins each. Again, in preparation for this, the recruitment team provided great documentation, and we also had a chance to meet with the other Hatch alumni, which was a reassuring experience, albeit the meeting could have been structured better (as there were issues with everyone getting their questions answered in the limited time available).
The technical interviews comprised of a pair-programming exercise where you were the driver, and the interviewer would act as a navigator. The interviewers did very well to settle my nerves, and provide sufficient guidance, whilst also letting me focus on problem solving, where I could display my capabilities.
The behavioural interviews consisted of a number of competency based questions to see whether you demonstrate each of Twilio's core values. Again, the interviewers did really well to put my nerves to ease, and allow me to answer the questions to the best of my ability. I won't give too much away, but as long as you know the STAR technique, Twilio's values, and are able to provide a real examples that reflected your achievements as well as any constructive criticism, you should be able to answer these questions well.