I applied through their career site, which is powered by Lever. I received a response the next day.

My process included a chat with the recruiter, followed by a phone interview. The phone interview was quite difficult. Initially, I was asked to implement a string search function. Unfortunately, I forgot the implementation details of KMP or any algorithm that achieves O(n) complexity. The interviewer then presented a different question involving calculating average webpage load times over a specific time period (Q4), which I solved perfectly.

Be aware that they expect you to write fully tested, working code.

The on-site interview consisted of:

• One coding interview
• One system design interview
• One practical interview
• One and a half behavioral interviews

The technical portions were okay, with slight mistakes made on the system design question. However, the behavioral interview went quite poorly. The hiring manager asked questions like a machine, and I couldn't gauge whether he liked my answers, as he refused to comment on any of them.

Overall, the experience was okay, but I honestly didn't like the hiring manager.

A week after the on-site interviews (today), I received an email stating I was rejected. The recruiter refused to provide any additional details and has since ghosted me.

Random Map - Support random value retrieval in O(1)

String search (KMP algorithm, etc.)

Design frontend A/B testing and performance evaluation system

You're given a stream of timestamp and webpage load time pairs, with timestamps monotonically increasing. Implement a class that supports calculating the average webpage load time across all events in the past X minutes.