I applied through linkedIn. The process took two weeks.
1.Round 1: By a third party staffing agency. Honestly, this round had some really tough questions which I doubt would ever be used in some practical projects. Started with my past projects and resume discussion, followed by couple of Javascript based coding questions and finally ended with output based problems on javascript.
2. Round2 -> Again, resume based discussions and then, given an executor class, implement it such that there is only one async method running at a time, followed by questions like concurrency etc.
3. Round 3 - HLD. LLD system design combined round.