I'm a student studying Computer Science. My university has an online job website where faculty and professors post job interviews for full time students to apply to (work-study positions). A bunch of jobs are shown, students upload resumes and apply with cover letters. I applied to a bunch on the deadline (two days ago), with just my resume. I did a brief reading of the job postings and applied to whatever I found was interesting (didn't have to be CS related).
I got an email today with the title "My first name last name - Invitation for an Interview". The body of the email mentioned that he would like to invite me for an interview (today or tomorrow), if I'm still interested, if yes, then to come to the address mentioned below and to ask for him or another lady. I was also told I can call him directly at the number below. He mentioned that he will be at the office 8:30am - 6pm. The email ends with his signature which includes the office location, his number and a couple other numbers (client care number, customer feedback number etc.).
I should've posted this earlier but I replied saying "thanks for the quick reply, I applied to multiple jobs through my universities career website and they took down the job postings recently. Is it possible if you can send me the job description for the job we are talking about? It will be greatly appreciated. Thanks."
My friend said this is making me look bad (as if I applied to random jobs without reading them).
What should I have done in this position?
What should I do now? I got the email 2pm, responded 2:50pm, and no response yet (5pm). I read his email again and I'm starting to think he isn't expecting an email response, let alone one which asks him to look up the job posting again (he only mentioned to come to the location below if I'm interested and to ask for him, or to call him directly).
I failed to save the information which has been taken off of the university career network website and have no way of determining what this job posting is. I saved the first 50 I applied to but I then saw a "my applications" section in the website which had all the job postings I applied to, so I thought they would be there after the deadline. Turns out they aren't. My mistake for sure, and I doubt the hiring manager knows the website 'either. Also, the company is the university (all jobs are for the university), just the department, professors, job postings are all different.