SUMMARY:

• Strong analytical, technical and people skills.
• Extensive experience with Linux/Unix, VMware and Enterprise Storage/Backup.
• Good with Windows and networking.
• Seeking a position in San Diego area or can telecommute.

PROFESSIONAL EXPERIENCE:

Confidential, La Jolla, CA

Senior System Administrator

Responsibilities:

• In charge of the company’s VMware, storage and Linux infrastructure.
• Re - architected VM platform and implemented Netapp NFS datastores .
• Planned and executed seamless VSphere upgrade and storage migration.
• Improved I/O performance by 10x and stabilized production.
• Managed 2 Netapp storage systems, 10 ESXi hosts and 200 VMs.
• Designed and built VM backup systems using 2nd tier storage and ZFS.
• Rebuilt SGE HPC and tripled the computing power of the cluster.
• Implemented DDN GPFS storage for HPC and fixed slow I/O bottleneck.
• Planned and executed large data migration from old storage to DDN.
• Helped administrating AWS EC2 instances and Corp AD.
• System alerts and performance monitoring with Nagios, Cacti and VCenter.

Confidential, La Jolla, CA

Senior Dev/Ops Engineer

Responsibilities:

• Managed 50 Redhat/Oracle/Ubuntu Linux servers on mostly virtual systems.
• Built and configured Windows 2008 and AIX servers.
• DoD level security tightening and strict monthly patching.
• Installed and integrated enterprise software such as OBIEE.
• Designed and implemented configuration management system using Puppet.
• System alerts and performance monitoring with Nagios and VCenter.
• Set up local package repository for Ubuntu.
• Planned and executed platform migration from Solaris to Linux.
• Planned and managed the move of all hardware to new location.

Confidential, Waltham, MA

Lead System Administrator

Responsibilities:

• In charge of entire infrastructure of the data warehousing operation.
• Administrated Redhat/CentOS Linux servers on HP C7000-series blades and VMware.
• Managed IBM P-series enterprise frames up to 32 CPUs per frame. 10 Frames were partitioned to 20 LPAR servers all running IBM AIX and Oracle/ASM.
• End-to-end SAN storage administration with 2 EMC Symmetrix/DMX and 5 EMC Clariion systems with 350 TB of total space, and 6 Brocade switches.
• Managed Netbackup system with 10 media servers on fibre channel and Oracle RMAN backup/restore procedures.
• System automation and performance monitoring using ECC, Nagios, NagiosGraph, Puppet and Bash shell scripts/ssh.
• Application performance trouble-shooting and operating system tuning.
• Assigned UNIX tasks and mentored junior staff.

Confidential, Burlington, MA

Senior UNIX System Administrator

Responsibilities:

• Support enterprise Solaris, HPUX and AIX servers running mission-critical financial market applications.
• Heavy performance trouble-shooting and system tuning for Oracle, Mysql, WebLogic and Apache servers.
• Built new VMware ESX/Solaris X86 cluster production platform from scratch.
• Daily UNIX operations and monitoring.

Confidential, Boston, MA

Senior System Administrator/UNIX Lead

Responsibilities:

• Lead role in designing, building and managing corporate UNIX infrastructure that includes,
• Production Oracle RAC servers and database development servers running RedHat Enterprise Linux on 64-bit Itanium hardware.
• High Performance Computing (HPC) Linux cluster with over 100 CPUs.
• Research UNIX farm made of IRIX, Solaris and Linux servers with NAS storage.
• Built and managed 30-node Windows 2003 and 2000 shared server farm with Symantec Ghost and ActiveBatch.
• Hands-on administration of Brocade, DotHill, EMC and Promise fibre SAN and Netapp NAS server.
• Set up and monitor SurfControl anti-spam mail proxies.
• Take part in network building, monitoring and trouble-shooting using MRTG, NetIQ, tcpdump, Network Observer, EtherReal, HostMon, also with Cisco, F5, NetScreen, Resilience, SmoothWall, and Net Continuum switches, firewalls and VPN devices.
• Assist with Windows production, Active Directory and XP desktop administration.

C omputer Network Technology, Westborough, MA

System Administrator

Responsibilities:

• As the only system administrator, provided IS/IT support to 30 staff members at company’s MA development center.
• Performed day-to-day system administration on over 100 UNIX servers and workstations, which include Sun, Linux, HP, Digital, IBM, SCO and SGI machines.
• Managed DNS, DHCP, Legato & Amanda backups, Network Appliance file server and SAMBA.
• Provided desktop PC hardware and OS support for all the staffs. .
• Extensive CGI scripting with shell scripts and some PERL.

Confidential, Norwood, MA

UNIX System Administrator

Responsibilities:

• Managed UNIX infrastructure for the software development and testing team.
• Managed TCP/IP Ethernet local network. Setup NIS and NFS on all servers.
• Server OSes include AIX 3, AIX 4, Solaris 2, HPUX 9/10 and SCO UNIX.
• Configured telephony resources of the development environment.

Confidential, Lexington, MA

System Administrator

Responsibilities:

• Mainly responsible for Solaris, Sun OS, HPUX and Windows NT system administration, network administration and custom installation of the company products.
• Worked on Clearcase and daily software build as a member of the integration team.

Confidential, Boston, MA

Internship Software Engineer

Responsibilities:

• Single-handedly implemented a DSP (Digital Signal Processor) embedded image-processing application, which uses real-time machine vision techniques.
• Used Borland C++ for Windows, C for TI DSP and DSP assembly.
• Improved the performance 60 times comparing to the previous non-embedded solution.