I have over 10 years of experience as a system administrator. I am constantly studying and mastering the newest technologies, and I refuse to rest on my laurels. Security, reliability, and performance are my focus. I will never say “If it ain’t broke don’t fix it”. I am adept in mixed Windows (2003 through 2012) and Linux (Red Hat/CentOS and Ubuntu/Debian) environments, with particular strengths in interoperability. Having been the Information Systems Security Manager for a DoD contractor, I am keenly aware of security issues and areas of risk. I hold a Master of Science degree in Information Systems from California State University - Los Angeles and hold a Bachelor of Arts degree in Anthropology from University of California - Santa Cruz.

Sr. Systems Administrator @ • I was designated Information Systems Security Manager responsible for all activities in the classified computing environment. This involved following and enforcing strict NISPOM procedures and passing intricate annual security inspections. As ISSM, I significantly improved my awareness of and attention to threat prevention and constantly following best practices in all areas of IT security. • Regularly conferred with users about how to solve computer-related problems and improve workflow. • Managed the deployment of Zimbra Collaboration Suite • Deployed Symantec enterprise virus protection via centralized server and monitored for compliance. • Coordinated with vendors and with company personnel to facilitate purchases. • Designed and implemented site-to-site VPN with branch office in Dayton, OH using SonicWALL routers. • Continuously analyzed all server and network hardware and software to determine the need for repairs, replacements, and upgrades. • Designed, configured, and implemented Active Directory domain. • Created and deployed Group Policies for security options, printers, drive maps, and software installation. • Maintained detailed inventory of equipment, software licenses, and services. • Maintained logs related to network functions, as well as maintenance and repair records. • Performed all enterprise data backups and disaster recovery operations, including off-site rotation and routine test restores. Primarily backup software was Symantec Backup Exec. • Planned, coordinated, and implemented network security measures to protect corporate resources. This included continuous tuning of firewalls and intrusion prevention measures. • Researched new technologies by attending seminars, reading trade articles, and taking classes. • Trained coworkers in new systems, software, and technologies. This included detailed written tutorials, group presentations, and 1-on-1 instruction. • Managed junior system administrator and delegated lower tier support From August 2008 to January 2015 (6 years 6 months) Greater Los Angeles AreaSenior IT Consultant @ • Extensive on-site and remote support of small and medium-sized businesses in the greater Los Angeles area • Hands-on administration of diverse computing environments. Responsible for design, deployment, and support of hardware, software, and network infrastructures. • Implemented and monitored backup strategies for a variety of environments and requirements. • Recommended changes to improve clients’ networks, and was deeply involved in determining cost and time estimates. • Configured, monitored, and maintained email applications (Exchange, BES, Kerio, and others) • Configured and deployed and virus protection software. • Diagnosed, troubleshot, and resolved hardware, software, and other network and system problems • Gathered data pertaining to customer needs, and used the information to identify, predict, interpret, and evaluate system and network requirements. From 2007 to 2008 (1 year) Greater Los Angeles Area

M.S., Information Systems, 3.7 GPA @ California State University-Los Angeles From 2007 to 2010 B.A., Anthropology @ University of California, Santa Cruz From 1998 to 2002 Rafi Greenberg is skilled in: System Administration, Network Security, Linux, Systems Engineering, Windows Server, VMware, Network Administration, IT Management, VPN, Firewalls, Microsoft Exchange, Apache, SAN, DevOps, Red Hat Linux