So I have hit a nice patch of good luck lately. I graduated with a bachelor's in May and have been working two part time jobs. Last week I was offered a full time job and on Thursday I signed the offer letter. However, the next day I received an email from my university asking me to come in for an interview at a job I really wanted and applied to a month before the job that I signed the offer for. I do not want to miss this opportunity and I have the interview scheduled for this Friday. However, the Monday after I start my new full-time job that I already signed the offer for.

I have never been in this situation before I am do not know what do to if the second job also gives me an offer. By that point will already be working for the first job. Most jobs have their advantages. The first job would give me time to go to graduate school. The second job pays twice as much and is at my university which is where I wanted to work in the first place, but would be in the evenings and I would not be able to go to grad school. However, I have basically already decided that if offered I will take the second job. This just means I will have to quit the first job after only working there for a few weeks. In my offer letter it says that I may resign from the company at will without reason and they may let me go at will as well.

I feel bad because I am a loyal person and not a quitter, but the second job would be a better offer for me and a more challenging position. People have told me that business is business and I should not be worried about resigning from the first job if need be. Has anyone else had to deal with this?