I applied through a staffing agency. The process took 4 weeks.

1x screening call leetcode easy + 1x internal recruiter call + 1x onsite system design + 1x onsite leetcode medium~ish coding interview. Overall it was a decent experience, but I'll have to underline some points:

• One interviewer asked "You're originally from X?" this is considered discriminatory based on the UK's Equality Act 2010.
• One of the interviewers couldn't quite read C++, which was a bit disappointing considering that I'm a C++ dev. I could have chosen the language accordingly.
• Asked not to talk about the questions asked. A: you don't get to do that without a contract; B: it just helps friends of the employees to thrive on interviews.
• Onsite interview taking a whole day is costly (candidate has to take a day off) and tiring.
• There is a blanket policy of "not providing feedback", which makes reapplying meaningless.

System design interview: file system design

Coding exercise: An immutable tree structure being hashed and compared to a remote via an API efficiently