Experience Summary:

Unix/Linux Systems Administration and Engineering experience employment experience includes work from small team environment to large production/data center environment supporting more than one million customers, email and website administration, scripting, storage management, network security and mentoring.

Employment:

SYSTEMS INTEGRATOR

Confidential

As part of the Core Infrastructure Engineering team, supported 100 IBM AIX, Linux RedHat, and Windows 2008 servers Created and maintained ksh/perl scripts to automate various processes like backup, system update and monitoring etc. Worked together with DBA to improve Oracle database server performance Provided root cause analysis for critical incidents System and application troubleshooting Written and maintained web application software for storage information Server capacity planning including storage usage and growth analysis Datacenter migration Resolved security issues Worked with application vendors for bug fixes, application enhancements, etc. Coordinated with Change Management for planned system outage Documented processes, including creating new processes, so that Operations can support the infrastructure Assisted other team in installing applications Mentored junior Systems Integrator and System Administrator

NSD UNIX ADMINISTRATOR

Confidential

As part of the Global IT, IT Infrastructure Services IT IS Network Software Distribution NSD team, provided a shared service for SAP's software development live cycle across the world and is responsible for 24x7 operations in an international delivery approach Installed and configured Signiant Content Distribution Management software Troubleshoot and resolved email issues Remotely installed and configured RedHat Enterprise Linux 5.6 servers worldwide Bulgaria, Canada, China, France, Germany, India, Israel, USA using HP Integrated Lights-Out iLO Advanced Configured RAID servers Implemented and maintained kickstart server Using VMWare, installed RedHat and SuSE servers for developers Maintained and troubleshoot existing RedHat Linux, SuSE Linux, and IBM AIX servers Maintained the Nagios monitoring tool, including Apache HTTP server Maintained the Samba servers Maintained and configured the NetApp storage Created and maintained bash and perl scripts for jobs automation Written and revised technical documentation.

PROGRAMMER ANALYST/UNIX APPLICATIONS ENGINEER

Confidential

As part of the Collaboration Application team, supported 60,000 UBC email accounts and managed about 3 million daily email messages on Solaris 9 using SunONE, Postfix, and Exim As Tier III/IV, resolved customer issues Tested, implemented, and maintained the email anti-spam/anti-virus/anti-phishing software, including TrendMicro, Sophos, etc. Quality Assurance on UBC webmail prior to rolling out to production development environment Implemented and maintained mailing list software including majordomo and Sympa Maintained and implemented the Apache HTTP and HTTPS servers, including installing SSL certificate Tested, implemented, restructured, and maintained DNS servers using RedHat 5 Assisted the security team regarding spam, virus, phishing, and system security Mitigated Denial of Service DoS attack Supported the Radius server for wireless and remote access Assisted the System team resolving Solaris and Redhat issues Supported and a primary resource to the IBM Tivoli Workload Scheduler TWS Created and maintained system scripts bash and perl for jobs automation Worked with Oracle Database 10g and MySQL database for data extraction, manipulation, and import for integration with other applications Implemented and maintained the virtual firewall using Cisco Adaptive Security Device Manager ASDM Implemented and maintained the virtual load balancer using Cisco Ace 4710 Device Manager Written and revised technical documentation Advised and offered suggestions on various technology improvement to management, including cost-effective solution.

SENIOR SYSTEMS ADMINISTRATOR

Confidential

As part of the Office of Satellite Data Processing and Distribution OSDPD team, supported the 100 RedHat Linux and 100 IBM AIX production servers 24/7 Maintained the network and servers monitoring tool Nagios and Apache HTTP server , including rolling out customized plugins Maintained the DNS servers and records/zones, including restructuring the DNS infrastructure while minimizing the impact to the local and public users Created and maintained Xen virtual servers Tested and implemented cost-effective High Availability FTP servers Resolved long term firewall issues on various servers Mentored other System Administrators Advised and offered suggestions on various technology improvement to management.

SENIOR UNIX/LINUX SYSTEMS ADMINISTRATOR

Confidential

As part of the Office of the Director server team, ensure the RedHat Linux servers, IBM AIX servers, and SGI IRIX server have 99.6 or better of system availability provide after-hours, on-call, system administration services 24/7 for system emergencies Install and setup IBM pSeries 570 including O/S installation AIX and RedHat Setup and configured the IBM Hardware Management Console HMC , including firmware and software upgrade Monitor system performance, recommend and implement changes to optimize system performance Implemented and maintained network and servers monitoring tools from the ground up by using Nagios and Apache HTTP server Written and revised technical documentation on servers setup Upgraded Veritas Netbackup client on the Unix and Linux servers Ensured successful daily backup and troubleshot issues System audit.

SENIOR SYSTEMS ADMINISTRATOR

Confidential

Responsible to maintain and deploy 100 RedHat Linux servers and workstations, 50 Sun servers and workstations, and 50 Microsoft Windows XP according to Federal security standards and guideline engineered an automated and robust Sun Solaris patch management infrastructure implemented and maintained network and servers monitoring tools from the ground up performed disaster recovery on critical servers while minimizing customers impact for high visibility projects migrated servers from old network to new network that included various changes DNS, firewall, switches and routers, system patches, etc. administered existing NetApp and setup new NetApp for production from the ground up, including data migration and firmware upgrade setup and engineered secure login for public facing servers and development workstations using RSA SecurID setup and maintained High Performance Computing HPC clustering using Scyld Beowulf cluster Maintained and supported the Apache HTTP server, including Tomcat cabling and racking of equipment procedure documentation wrote and maintained scripts in order to automate tasks and functions tape backup using Legato Networker and Symantec Backup Exec integrated Windows and Unix/Linux workstation interoperability through Samba troubleshoot and resolved customers' computer issues mentored other system administrators advised and offered suggestion on various technology improvement to management.

SYSTEMS ADMINISTRATOR

Confidential

As part of the Engineering team: Responsible for maintaining about 400 Linux servers, 20 Sun servers, and 50 Microsoft Windows 2003 servers in a mission critical server environment 24x7 support of local and remotely hosted Media Delivery Streaming and Apache Web production systems performance monitoring new server deployment/relocation and configuration cabling and racking of equipment network connectivity and equipment configuration procedure documentation wrote scripts in order to automate tasks and functions and developed media delivery systems solutions for live broadcast operations installed, configured, and upgraded hardware and software on Real and Windows Media streaming systems upgraded operating system versions, kernels, packages and server application software on current production systems assisted in the research and evaluation of hardware, software and/or tools related to operational support functions deployed, maintained, and troubleshot internal systems used in the monitoring of production streaming and web services performed various tests prior to deployment stress test, performance and load test, functionality test, etc.

OPERATIONS TECHNICAL ANALYST

Confidential

Monitored, maintained and supported more than 1,800 Solaris/Redhat servers, batch processes, applications, and databases by using various tools, including Maestro, Informatica, Tivoli WebTEC, and Netcool, to ensure 24/7 availability Monitored for successful tape backups, troubleshoot and restarted failed backups using Legato Networker and Veritas Netbackup , tape management and tracking, and offsite storage and archiving Processed and troubleshoot billings Axys and EDocs billing Supported the Apache HTTP server, including Tomcat and Weblogic Provided second level Tier II support on outstanding issues and production failures

DATA CENTER ANALYST

Confidential

As part of the Engineering team: Monitored email, news, web, ldap services and hardware for more than 300 devices mainly Linux and Solaris servers to residential and business customers using NetCool, SMC, HP OpenView, Netsaint/Nagios through Apache HTTP Server, ensuring 24/7 services availability Used Legato to ensure daily backups were completed successfully for business customers Created, maintained, and improved scripts for daily tasks Generated service report using NetCool Reporter which used Oracle as backend and SQL as frontend Checked file changes on residential servers using Tripwire Documented and updated procedures for co-workers Trained new Analyst Provided tier-3 support for business and residential customers Installed software, monitored and resolved services issues and system security, applied O/S patches for servers that I administered

TECHNICAL SUPPORT ANALYST

Confidential

Reviewed computer systems capabilities to determine if requested program or program change is possible within existing system Created and maintained company's website log analysis installed, updated, and maintained the Apache webserver including secure web server Configured and implemented firewalls Used various protocols including NIS, NFS, sendmail, TCP/IP, BIND, DNS, samba, DHCP Installed and configured SCO, AIX, linux, OpenBSD, Solaris with the operating systems including kernel/performance tuning and applying patches , applications, and peripherals printers, modems, card swipes, etc Initiated, updated, and made available Technical Support Help Guide document and made available to staff members all non-standard hardware and/or operating system configuration and troubleshooting information Created, updated, and maintained scripts Configured and troubleshoot modem communication Educated support staff with lecture and/or documentation of any new and/or forgotten technical information Extensively used and configured AIX Journal File System and Volume Management Ensured backing up critical on-house data to tape and offsite storage using Sysback and mksysb Maintained: mirror and mailing lists