I applied through college or university. The process took 2 days. I interviewed at Dyson (New Delhi) in Sep 2018
Interview
There were three rounds. A PI followed by a product demonstration round and again PI with the MD or someone from a higher designation.
The first round was both HR and technical.
Demonstration round was about demonstrating their product.
The final round, though I couldn't make it to that round, was an HR round.