Data entry/invoicing

We are looking for a part time assistant to help with data entry/invoicing. The hours can be flexible but prefer Tuesday's/Thursday's with possible additional days during busy times. Our current assistant is a retired schoolteacher. We are looking for similar qualities in a person applying for this position. Good at working independently, reading workers notes and deciphering them, typing, communication and organization. This job is roughly 14-18 hours a week but busy season could be more. This is a 1099 position.