> but it should not take much more than a few hours to get back to a decent skill level It really depends where you apply. Some companies have interview proces

> but it should not take much more than a few hours to get back to a decent skill level It really depends where you apply. Some companies have interview processes that require a very specific preparation and it can be very time-consuming. I applied once for a quant position. The interviewer didn't really care about my resume and we started directly with logic and probability puzzles (a few phone interviews). I was about 35 at the time, and this was the type of things I would have been more comfortable doing when I was a 20-years old math undergraduate. On one hand, I like that they put everyone on an equal ground. On the other hand, I think it's a bit of a shame that they dismiss many years of experience.