In an interview, they gave me access to their codebase and asked me to fix an actual (small) bug. The interviewer showed me where the codebase was, how to replicate the bug, all of that took less than 10 mins. Then he left, told me to give a shout once I am done. Took me about half hour to do it, another 10 mins to explain what I did to fix the bug.

There were no other questions - no white board stuff, no algorithm questions, no stupid questions like "where do you see yourself in 5 years?" etc. I still remember the interview nearly a decade later.

Obviously this won't work for all jobs, but this will work surprisingly well for a large number of jobs, because most jobs are ordinary. One doesn't need to know complex algorithms to do these