SUMMARY:

• Experienced IT Professional with expertise in system, SAN, network administration, backup and disaster recovery, and computer security.
• Expert in designing, managing, securing, and troubleshooting high available RedHat Linux, UNIX, Oracle, Microsoft Windows, email and web systems infrastructure.
• Personal strengths include an excellent work ethic, persistency, and strong organizational skills.

TECHNICAL SKILLS:

Operating Systems: Linux (RedHat Enterprise, CentOS, SuSE), Windows NT/95/98/ME/2000/XP, UNIX, Novell Netware, FreeBSD, Solaris, MacOS.

Programming: C, C++, Perl, UNIX Script (Korn/Bash/C Shell), SQL, Java, HTML, VBScript, Basic.

Server: Apache, Oracle 9i/10g database, Oracle Real Application Cluster (RAC), Oracle Application Servers 9i/10g, MySQL, Sendmail, qmail, Postfix, BIND, cfengine, Splunk, Nagios, Sitescope, Microsoft Exchange 2000/2003, Blackberry, IIS, Tomcat, Microsoft SQL Server 2000/2005, Windows Terminal Services, Citrix, Altiris, Veritas BackupExec, Netbackup, Commvault, Novell GroupWise, Snort, clustering, and load balancing.

Virtualization: VMware Infrastructure, Workstation, Microsoft VirtualPC.

SAN/NAS: Network Appliance, Hitachi AMS UPSV, DataDomain, EMC Clariion, Equallogic, BlueArc, Fibre Channel, iSCSI, fabric (Brocade, McData), DCFM, HBA (Qlogic, Emulex).

Applications: MS Office, Dreamweaver, Visio, Project, TOAD, HFNetChkPro, Norton Ghost.

Networking: NFS, NIS, CIFS, Cisco Routers, Switches, WINS, Proxy server, LAN, WAN, Ethernet, Wireless Networking (802.11a/b/g), Active Directory, Group Policy, file and print services, RRAS, SMS, Routing Protocol (RIP, RIP2, OSPF).

Protocol: TCP/IP, IPX/SPX, SSH, Telnet, DNS, DHCP, FTP, SMTP, HTTP, POP3, IMAP, SNMP, LDAP, SSL, IPSec.

Security: Firewall, VPN, Intrusion Detection System, Secure Shell, RADIUS, Anti - Virus, Windows Update Service, Microsoft ISA, Barracuda Spam Firewall, vulnerability scanners.

Hardware: PC, Dell PowerEdge and Blades, HP Hardware, RAID, SCSI, NAS, DAT-4/AIT/LTOTape Drive, UPS, Cabling.

PROFESSIONAL EXPERIENCE:

Linux and Storage Systems Engineer

Confidentia l

Responsibilities:

• Automate, implement, and maintain more than 1000 production Linux machines, including system installation with cfengine, Redhat kickstart, and scripting.
• Non disruptively upgrade and migrate critical 24X7 Linux servers, including front facing web servers for www. Confidential with zero downtime.
• Non disruptively implement upgrade process of Java runtime, Tomcat, and Apache across all production servers.
• Architect, implement, and maintain stable and scalable Xen virtualization cluster with more than 500 VMs.
• Increased system efficiency, availability, and uptime, by doing continuous system engineering analysis, process improvement, and communication with other teams, and developers.
• Implement, and manage scalable SAN and NAS system with Brocade DCX, Hitachi USPV, Hitachi AMS2000, Bluearc NAS, and Netapp with more than 250 TB of space.
• Act as point of escalation for many complex and complicated system issues, and help mentor junior administrators.
• Achieved Confidential outstanding employee in less than 8 months, after starting employment at Overstock, within an IT group of more than 100 people, which was the first.

Systems Engineer

Confidential

Responsibilities:

• Upgrade, implement and maintain Confidential business critical Oracle Database 10g systems for internal applications, by using RedHat Linux Enterprise, Oracle Application Server 10g, Oracle Database Real Application Cluster 10g, and Network Appliance NAS. The system has achieved no unscheduled downtime since the implementation.
• Design, implement, and maintain internal web application systems using Redhat Linux Enterprise, Apache, and PHP ZendCore.
• Design, implement, and maintain internal Business Intelligence tool using Redhat Linux Enterprise, Tomcat, and Oracle BI Publisher.
• Design, implement, and maintain VMware Infrastructure for low utilization server consolidation.
• Design, implement, and maintain a Storage Area Network infrastructure for headquarter email system by using Network Appliance SAN, McData and Brocade fabric, and Qlogic HBA.
• Architect, design, implement, and maintain a secure, stable, and resilient global mission critical Active Directory and Microsoft Exchange 2003 for Confidential, allowing more than 1800 users to continuously access their email and calendar from anywhere in the world, either by using Outlook, Webmail, or BlackBerry. The system has achieved no unscheduled downtime since the implementation.
• As a result of merger and acquisition of 9 companies within a year, seamlessly design, plan, and implement major system migration from Lotus Notes and Novell Groupwise into Microsoft Exchange, and Novell Netware into Windows file server for more than 1000 users by using Quest migration product.
• Architect, design, implement and maintain an enterprise backup and disaster recovery system using Commvault Galaxy Enterprise using both backup to tape and backup to disk.
• Identify, design, and implement enterprise system monitoring for email, file and print server, and database system using native tools, and 3rd party product from Netpro (Management Suite), Quest (SpotLight, MessageStats), and IPSwitch (WhatsUp Premium).
• Implement Citrix solutions for Primavera implementation.

System Administrator and Webmaster

Confidential

Responsibilities:

• Lead the design and deployment of Active Directory and Exchange Server using Windows Server 2000/2003, Microsoft Exchange 2000/2003, and SQL Server 2000 on multiple servers for optimum efficiency.
• Implement intrusion detection system and mail scanner using FreeBSD and Linux servers running on Snort, Amavis, Postfix, and Spam Assassin as well as configure security and firewall system on the desktops, servers, and network using Shavlik and Visnetic firewall.
• Implement disaster recovery plan by creating onsite backups by using Veritas Backup Exec 9.0 for the servers and workstations.
• Evaluate user requests for system enhancements, analyze costs for potential hardware and software upgrades, and report to upper management on system performance.

Computer Network Assistant

Confidential

Responsibilities:

• Developed Novell network infrastructure for Staffs using Novell Netware 6.0 and Groupwise 6.0.
• Improved 120% users’ productivity by having a very stable, reliable, and secure network system.