Applied online. After a few days, the hiring manager called me to talk about the team, the position and the next steps. A week after a senior researcher called me and we talk about my resume, my experiences, a little bit of technical things. Was very casual but interesting at the same time. He told me that there are many candidates but they have good feeling about my profile. After this initial (I guess screening) step, I had 2 online technical interviews with some researchers. They asked open ended questions like "how would you solve this optimization problem" etc. Was interesting and they were polite. Finally, call from the hiring manager that everything is going well and I should receive any day now a call from HR to start negotiations. Also, a final interview with the hiring manager's boss that overlooks the entire research division. Nice chat. I declined the offer as I had other offers at the same time and the compensation package, although good, was not as impressive as I would have thought/expected.

the interview process basically have 4 rounds - 2 technical interviews. The first round includes the coding assessment - HR qualification interview - Final interview. I passed the first round and they moved me to the qualification round directly. The first interview lasts 1 hour. I started by telling about myself in 2-3 mins, then I had 30 mins to solve a coding problem. The problem is not hard. Next 10-15 minutes, I have a short presentation about the project that I am working on and answer some questions from them.