Sr. Systems Administrator – Washington, DC The Senior Systems Administrator will be tasked with supporting Office 365/Exchange 2013, Active Directory, Windows Server 2008/2012, SCCM or similar deployment/automation technology, Storage Solutions and VMWare or Hyper-V technologies. Core expertise in three or more of the above-mentioned technologies is essential. POSITION RESPONSIBILITIES: • Support and maintain email users currently on a hybrid Office 365 Exchange 2013 environment. • Support and maintain Active Directory infrastructure including identity management/SSO, Group Policy updates, Software updates, FSMO roles, DNS, DHCP, Sites and services etc. • Support storage infrastructure - SAN/NAS, backup and recovery. • Support Citrix Xenapp environment with deploying applications/desktops and troubleshooting. • Lead activities such as system builds, application installation and configuration • Support of Windows Server systems as both Physical and Virtual Machines • Respond to escalation calls from the Help desk, Desktop support, and other ITS teams to resolve issues and perform maintenance.