Virtual Administrative Assistant

I am in need of a virtual administrative assistant who can handle the following tasks:
- Email management
- Customer Support
- Social Media Management
- Follow Up on Marketing Initiatives
- Calendar scheduling
- Data entry (to be completed within a week)

For data entry, I do not have a preferred software or platform and am open to suggestions and I also have a proprietary software solution my developer has created over the last 2 years. The ideal candidate should have experience in administrative tasks and be proficient in communication and organization skills.