I applied online. The process took 2 months. I interviewed at Arm (Manchester, England) in Dec 2020
Interview
The interview process consisted of three stages. The first was an online test consisting of coding challenges and questions specific to image processing. The second was a virtual face-to-face interview with two members of staff, this was 1 hr long. The last was another virtual face-to-face interview, this time with three members of staff. The final interview was 3 hrs long. The interview process took about two and a half months from when I first applied to when I recieved a decision after the last interview.
Interview questions [1]
Question 1
I'm not going to give away their interview questions but I would recommend practicing plenting of programming questions online beforehand. They also asked questions related to image processing.