Virtual Admin Assistant for a CEO

We have well-documented standard operating procedures and we are looking to hire one part time virtual administrative assistant about 25-30 hours per week:

Coordinating/Booking conference calls and meetings for the CEO and senior staff.
Manage the following bookkeeping tasks:
Preparing invoices and general ledgers
Preparing and emailing invoices to customers

Emailing payment reminders and following up with customers by phone
Maintaining financial data in Quickbooks
Entering payables and receivables
Confirming employees have completed their timecards and follow up with employees as needed to ensure the time tracked per project is Upgrade to see actual infopleting reports and filing documents based on standard operating procedures
Follow up with new employees to ensure that they have submitted all required onboarding paperwork.
Collecting and issuing W9 forms for clients.
Transcribing audio to text.
The ideal candidate will have very high attention to detail and be able to read and write well in English.