I applied online. The process took 4 weeks.

It is literally the worst interview process I have ever attended. First, they give you a weird and incomplete question to solve. Then, after 5+ follow-ups with HR, the second round is with an engineer of theirs who doesn't know anything. This interview is over Slack, and the interviewer, or company policy, is so toxic that they won't have a video. You just write your answers, and the interviewer will come and see in between. I sat from 11 AM to 9 PM waiting for someone who doesn't know what a mutex is. No wonder the product is losing all the market. It is a toxic company with toxic policies.