The process took close to a month, from the first time they reached out to me until an offer was extended.

The interview steps were increasing in difficulty, always manageable.

There were four rounds:

• A code challenge.
• A 3-hour session composed of a coding test, system design test, and behavioral test.
• A logic test.
• A final 3-hour session composed of a more detailed system design test, meeting with the PO and Team Lead of the team you might join, and a casual meeting with team members.

Overall, the process was smooth. They kept me informed at all times of my progress and gave me feedback to improve after every test/interview.

There is nothing specific. Just focus on good coding practices, review system design books, and manage your time properly.