SUMMARY:

• To provide a beyond reproach work performance, by using my multifaceted Information Technology knowledge, excellent customer service, organizational skills, passion for technology, and my desire to continue developing an already successfully career in the IT field.
• During my tenure at my last place of employment I worked hard and efficiently to become an integral member of the Confidential .
• In every occasion, I thrived to achieve or exceed every goal set out for me by my Supervisor, and in many instances by myself. I would like to list below some of the projects I took the lead on, in order to facilitate the understanding of what my daily tasks while working there.
• Configured a Nagios monitoring virtual server on a free operating system (gnu/Linux CentOS) which alerts the IS department of any server, switches, or website issues that might arise during working and non - working hours. The alerts are received via email or text messages for those times when there is nobody around in the data center. This implementation saved the company a great deal of money on maintenance cost by replacing a commercial application named Confidential . It has also permitted to resolve problems before the staff arrived at the centers, again saving money and lost production time.
• Designed an MRTG bandwidth graphing virtual server on a free operating system (gnu/Linux CentOS), which allowed the IS Department to monitor the bandwidth consumption for every site, interface, and port on all network equipment. Commercial application with this capabilities cost a tremendous amount of money. This system allowed the IT staff to quickly identify any bottleneck happening at the network level
• Replaced some old, Ultra-gateway servers (Dicom images gateway) with free open source DCM4CHEE servers. This replacement saved top dollars to the company on maintenance costs.
• Provisioned a virtual server on a free operating system (gnu/Linux CentOS) used to scan yearly all network devices for vulnerabilities (openVAS). After the scans were performed. the reports were used to patch these flaws on all devices attached to the network. A service like this would cost tenths of thousand of dollars if hiring an external consultant.
• Created a Windows Deployment server that can deploy corporate images to computers in fraction of time compared to what would take to install the operating system on each of them individually. I personally used it to image more than a 130 computers during a major Radiology Information System upgrade
• Used a free, open source software to encrypt every laptop in use in the organization, saving a great deal of money to the company.
• Introduced the IS Department to server virtualization, and converted many physical servers to virtual servers saving money to the company in power and cooling costs, and also achieving a high rate of server consolidation.
• Conceived and performed a full migration from an old and dying Confidential network storage device to other network storage devices. More than 20 terabyte of data successfully migrated.
• Maintained storage resources, and performed several storage devices upgrades. Always provisioned storage for medical images in advance to allow for a continue and smooth operation.
• Maintained the overall server, computer and network security, including managing the Antivirus solution. I was always the first responder in case of an infection or breach
• Successfully migrated Active Directory operational level domain from windows 2000 to a 2003 domain, and later to a 2012 domain.
• Took the lead on performing the migration from Windows XP machines to the newer Windows 7 including creating the corporate OS images for the deployment.
• Took the lead on performing the migration from Windows 2000 and Windows 2003 to newer, supported operating systems.
• Implemented and maintained an Instant Messaging virtual server (openFire) using a free OS (Linux CentOS). This IM server became an important and efficient tool to facilitate communication within all company staff
• Upgraded and maintained the company Citrix infrastructure which allowed referral doctors and internal doctors to access the company PACS system, and be able to approve medical reports from outside the company network.
• Maintained all company servers including backing them up and fine tuning them.
• Setup a Confidential server and policy to deploy updates to all company computers.
• Upgraded, hardened and maintain the company FTP server making a lot more secure and robust.
• Researched, recommend and purchased many network and computer systems always with the top priority of saving money to the company by doing price and product comparison
• Deployed an open source, free remote support tool to help staff with computer issues, saving a great deal of money to the company.

TECHNICAL SKILLS:

• Microsoft Infrastructure / Active Directory (Windows servers, domain controllers, group policies, DHCP, DNS, FRS, WDS, NPS, Windows clusters, file services, printing services, etc)
• IT Security (Anti viruses, vulnerability scans, internal and external penetration testing, hardening, patching, Confidential, openVAS, Nessus, nmap, etc.)
• Web filtering, and email gateway
• Virtualization (VMWare vSphere, ESXi, VirtualBox, Xen, KVM, VMExplorer, vCenter)
• Storage. (Dell Compellent, TrueNAS, Confidential, Synology NAS, iSCSI, Fiber Channel, MPIO)
• Linux (CentOS, RedHat, Fedora, Nagios, MRTG, OpenFire, Spark, vsftp, bash, samba, NFS, etc.)
• Citrix (XenApps, Citrix receiver, Netscaler)
• Networking (Cisco switches, ASA, wireless controllers, MDS switches)
• Documentation (Network and server diagrams, How-to creation, knowledge base building, password vaults)

WORK EXPERIENCE:

Systems Administrator

Confidential

Responsibilities:

• Re - designed and managed Active Directory, deploying policies through the use of Group Policies Objects and scripts.
• Managed all active directory services DHCP, DNS NPS, WDS, print services etc,
• Designed, implemented, and managed several different storage devices, setup and maintained the Storage Area Networks (SAN), Direct Attached Storage (DAS), and Network Attached Storage (NAS).
• Performed data migration. More than 20 TB of medical dicom images successfully migrated.
• Servers and applications upgrades and migration.
• Performed IT Procurement and advised on new products and solutions.
• Setup, monitored, and performed backup and recovery services
• Charged with network security. Investigated computer virus infections as a first responder. Recommended strategies on how to prevent future infections
• Performed security audits and penetration testing both, internally and externally
• Hardened, secured, and patched a variety of systems, such servers, switches, storage devices, external FTP server, etc
• Setup and managed the Confidential Web Security Gateway, Confidential Mail filtering, and Bomgar Remote Support appliances.
• Setup up and managed the virtual environment. P2V, V2V conversions, VM backups.
• Created and provided quality control for corporate computer and server images. Deployed those images in a fraction of time by using WDS
• Implemented and managed our Windows Deployment Servers
• Provisioned and maintained different Linux server and open source applications.
• Configured and supported the company Citrix Environment.
• Performing network bandwidth assessments, identifying and correcting network bottlenecks.
• Provided tier 2 and 3 support when computer problems resolutions were not found by tier 1 support.
• Created and documented servers inventories, configuration changes, and network diagrams

Distributed Computer Systems Analyst

Confidential

Responsibilities:

• Managed Active Directory, deploying policies through the use of Group Policies Objects and scripts,
• Managed DHCP services, DNS, Printing Services, Storage etc
• Configured, secured, and managed switches
• Maintained up to date all network changes and network diagrams.
• Setup and supported all new Storage Area Networks (SAN) solutions.
• Managed backup and recovery services.
• In charge of providing network security, and investigating computer virus infections.
• In charge of the company virtual environment.
• Provided quality control for our corporate computer and server images.
• Configured, deployed and maintained Windows and Linux servers.
• Performed network bandwidth assessments.
• Provided tier 2 support when computer problems resolutions were not found by tier 1 support.