Twilio Staff Software Engineer interview questions

One of the worst experiences ever. It took 2 weeks to get positive feedback to move forward. The recruiter said she need to go back and check with the team with the offer and that took another week. Then 1 week later she came back saying due to re-org extending the offer needs extra approval. I don't know what the hell is going on inside but this is definitely a bad experience. Also the recruiter doesn't seem to respect candidate's schedule and communication preferences. She never responds to emails. Later on I give up on emails and tried to message her and she would call back directly. Feels like my message just reminds she still has to work on my case...

1 hacker-rank test. 4 virtual 1:1 rounds. Two technical, one system design, one behavioural.The interview process was lean. 4 virtual rounds were conducted on the same day back to back in 4 hours. The interview level was not difficult. I believe they were not sure what they were looking for. I was expecting an offer. The recruiter at the end left a negative impact, with his/her (not disclosing gender) bossy attitude.