The whole process took about 4-5 weeks. It started with a 20-minute call with an HR colleague, followed by 4 rounds of technical interviews (1 online via Skype and 3 onsite).

Each technical round focused on a different aspect:

• Programming skills
• System design
• Data structures, etc.

I really enjoyed the onsite part because I had the chance to discuss with developers working on actual projects. It wasn't too difficult, and the interviewers were really helpful.

After the technical part, I received a call from HR. The interview was successful, and they wanted to invite me to a managerial lunch. During this meeting, they were interested in my soft skills and my expectations regarding the offered position.

In the end, I received an offer, which I accepted.

1. Implement a commonly known data structure.

2. Design a scalable, low-latency system.

3. Implement some kind of algorithm.