Stupidity: Why, in the most secure computer room you could find, with all those detection devices, did they not install video cameras? There is no risk of a security breach as they could be locked into a position that would not show the computer screen or keyboard but would show that an intruder had entered the room.
Stupidity: You would think if the security systems in the computer vault have to be off in order for a technician to access the computer then the computer itself wouldn't be accessible if the security systems were on.
Answer: Jim has not been paid (at least in full) yet. This is revealed in the conversation Ethan has with Max in the car. Payment was conditional on the disk passing all her safety checks, which she had not done yet (she had not even looked at it yet). There is no way Jim knew the NOC list was junk at this point in time. However, since Jim has not been paid yet for the NOC list, he might have been trying to play it safe, and have Claire just keep tabs. If things don't go as planned, he might have left Claire as she was expendable to him. Also it is unlikely Max contacted Jim (Job) to ask about the email from Ethan (pretending to be Job). Max at this point believes the two are the same person. She simply invites Job to come in and discuss further.