I applied through ARM website and received communication within a month.

First round was a telephonic screening. It involved basic questions related to VLSI Layout, Scripting, Current projects and work experience.

I got invitation for an onsite interview within a week of telephonic interview.

There were 4 one-to-one interviews. Most of the questions were fundamentals of VLSI like, operation of inverter, timing analysis, logical effort, performance, SRAMs, Euler Paths, Transistor level schematic, layout - comparison of different input ordering based on performance, transistor folding and stack folding.

Finally there was a conversation with HR to wind up the entire process.

They gave me their response the next day.

Limitation of number of pins on the input of a gate, even if it is FinFET where stacking effect is absent.