Administration Support for Facilities management company

We are an expanding company who specialise in outsourced facilities management. Due to recently taking on a high volume of new clients we need an administrator to take on the following roles.

Entering data into spreadsheets
Receiving and sending emails
Sending invoices
Sending quotations
Liaising with clients and subcontractors

We are initially looking for someone for 10 to 15 hours per week but we will need to increase this as we grow