أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
Yes, some do. Some tasks are better performed at night and the specialists may ask to work off-hours to get that work done. Senior specialists may simply just walk into the office in the evening or at night, knowing they are going to do something that requires a lot of computing power or bandwidth that would interfere with normal daytime operations.