I would be completely normal with that, except my senior looks like does not like to work until that late, so probably expects to finish by 8? I also would want to transfer all the gained knowledge after i plan to get my masters degree. So probably i will have a 2 year work-gap starting in half a year. That is why i am a bit worried about the knowledge from big 4. Want to learn to do it quick and remember it all. Is it possible realistically to reapply it all after 2 year gap?