Job Title ?

I just got hired at a contracting company, and have currently been put in charge of making business cards for my boss and I. Him ? Easy, he sent me his info, done. I'm struggling with the ones for myself because I don't really know what to call this job position

On a day to day, he'll send me invoices and estimates from clients for me to add to our books, as well as has me on hand to double check and track information and finances, as well as things like this (making/ordering cards and t shirts). That said, as I get settled, more responsibilities like managing orders, taking and receiving calls, etc, would be added

When we first talked, the title executive/administrative assistant was mentioned, but I just wanted to ensure that was correct since he's essentially given me freedom to put whatever onto these cards, just so that it's accurate, since I've seen additional other titles for similar jobs