Datadog Software Developer interview questions

STAY AWAY, bad interview process, waste of time. Got rejected by them and then I got an offer from a FANG company. Wasted 2 weeks just on the assignment. They told me the salary the average engineer (midlevel) similar to me makes at their company, it was below average, close to 100k , no 401k match. 1) Recruiter contacted me via Linkedin, seemed like a great company. 2) Had an online tech screen that was average and I passed it got a great review. 3) Got a take home assignment, they were vague and didn't specify the requirements, took a week to do it. Given I work fulltime and this was a small project, all the functionality they asked for was there. I tested it and it worked. They reviewed and asked for me to complete another assignment, should have stopped right there.

Had a tech phone interview with a senior engineer, the questions were two algo problems, I solved them and interviewer gave me a strong positive feedback. Then the weird thing was HR asked me to finish an OA with two more algo problems in order to move to next step, I rejected since I thought if I've already got positive feedback from phone interview, it's ridiculous to have an additional OA round.