I have 7+ years of experience as Windows Administrator at various organizations.
OS: OS X, Windows Xp/7/8 Server 2003/2008R2/2012/2012R2 : Active Directory, DNS, DHCP, IAS (NPS), DFS, IIS 6/7/8, Certificate Authority, File Server, WSUS, Group Policy, WDS.
Database servers: MS SQL Server 2008/2008R2/2012, MySQL
Scripting: vbs, PowerShell
Virtualization: Hyper-V, VMware Workstation&vShpere, Xen
Antiviruses: Symantec, ESET Nod32, Kasperskiy (with administration console).
Cloud Services: Google Apps for Business, Amazon AWS (Route 53, VPC, Security Groups, Routing Tables, Amazon Hardware VPN, EC2, S3, RDS, IAM), Ninefold, DigitalOcean.
VPN: SSTP, PPTP, IPsec, site to site VPN.