This is only for Hillsboro site, not all of ASML, as I know for fact that it's much more relaxed at other sites like Intel Chandler, Micron, etc:
The consensus is: ASML CSE Intel HBO is sink or swim. They will throw you in the deep end of the pool, and you can either drown quickly or tread water until you reach the shallow end. At first, your tasks are quite overwhelming, if you're not used to deal with with Intel Hillsboro, extensive metrology recoveries, multiple documents and process sheets, wondering which document supersedes which. And there is an extensive learning curve. Machine recoveries are days to weeks long. But don't worry, you will be held by the hand for your first year, and trained properly until you're comfortable on your own, and become headcount.
Very few actions are complete in a single shift. However, you are never just left on your own to figure it out yourself, as a new hire (you'll be a new hire for about 6months to a year or more, depending on your manager's/GL's assessment of your abilities, and your confidence). You will be fully supported by your shift and EIC. You also need to learn to operate the Tokyo Electron Lithius track machines, which are pretty intuitive to operate, and move around wafers and FOUPS.
Unless you are dayshift, you will very rarely be recognized for your hard work, or if you discover a solution to an ongoing issue, unless it was something substantial. Most engineers that would like more exposure, switch to dayshift, as upper management is all Monday through Friday. There are so many CSE's, that you will need to stick out from the rest, for any recognition of your hard work. You feel like you're just one of many cogs in a system. ASML is growing exponentially, and all Group Leads and Team Leads I've had the pleasure of knowing and working for, are all great. So regardless of shift, you're going to be with strong management and leadership.
It's an honor to be accepted as an ASML employee. If you're offered the job, I would take it. As long as you don't mind always being in the fab and office. Micromanagement is on a high level at this site, last I was there. I've been scolded for taking extra time, interfacing with Intel customers and establishing rapport with Tool Owners, as the shifts want you to rush immediately back to the office, after your on-site tasks are completed. No room to relax or hang out outside of the fabs or the office. Huge turn-off for most people, as all other venders that I've worked for, did not do this. WE ARE ADULTS. WE ALL HAVE OUR CORPORATE PHONES ON OUR PERSONS. There's no need to micromanage the CSEs so hard, if they aren't actively assigned to a scanner.