Twilio Software Engineer - II interview questions

Went to final round, Recruiter was very attentive and would schedule prep calls between interview rounds to check in, which was very helpful. All technical problems were of reasonable difficulty, and interviewers took a collaborative approach to presenting them. Full interview process: Hackerrank Challenge (100 mins) - LC medium Recruiter call (30 mins) - standard behavioural questions - looking for culture fit and "twilio magic" values in answers Technical Screen (60 mins) - 50/50 between coding and discussion - easy problem that grows in complexity, interviewer wants to see how you adapt to growing requirements "Final Round" gauntlet (3 * 60 mins) - System design interview with HM; I was challenged to design a system to manage elevators - REST/Backend interview; you're given an API to fetch from and process data - Frontend/React interview; built a functional interface from boilerplate