I hired someone to write code for my iPhone app that allows me to send information to a MySQL database and to retrieve that information using JSON objects. Long story short, he's gone and I have no contact with him and the job is incomplete though almost 90% finished. Basically, I have the username and password to the AWS account (since I made it) but I need to get that code he wrote from AWS somehow, I'm assuming using SSH, though I don't have the 'private key' (the thing you download when you create a key pair), for as stated previously, I have absolutely no contact to this guy at this point.
My question is - if I hire someone else to finish the job, will they be able to have access to what the first guy already did? Please keep in mind: all I have is the username and password to the AWS account and control panel which provides me with a lot of information, but I'm afraid that without the 'private key' I, and nobody else, can get into that EC2 instance...
Please help! And thank you so, so much!