SYSTEMS ADMINISTRATOR

With 16 years of progressive experience in systems administration, to ensure reliability and stability among all systems and its existing technologies as well as introducing and integrating new technologies to promote the productivity and economy of the company.

TECHNICAL SKILLS

• OS Platforms: MS Windows Server 2000 to 2008 R2, Red Hat Enterprise Linux, Sun Solaris 2.6 to 10, FreeBSD, and IBM AIX 5L.
• Virtualization Technologies: Windows 2008/2008 R2 Hyper-V, VMware vCenter
• Server/Desktop Hardware: Dell PowerEdge, HP Proliant DL series, Sun Ultra Enterprise, IBM Power pSeries, Dell blades, hard drives technologies, RAID controllers, and server grade network interfaces.
• Storage Appliances: HP StorageWorks X1500, NetApp FAS 2020 filer, Dell PowerVault MD3000i, Isilon IQ, IBM DS 4800/4000, Synology DS510 /DS1511 , Sun StorageEdge D1000, Sun StorageTek SL500 tape library, and IBM TS3100 tape library.
• Infrastructure Services: Directory services: Active Directory, NIS/NIS , LDAP, and Radius based services Database: MS SQL Server, MySQL, and Postgres Web services: IIS, Apache, and WordPress E-Mail services: MS Exchange, Postfix, and IMAP clients Cluster services: MS Failover and Network Load Balance Cluster, Linux Beowulf Network file system services: CIFS, Samba, NFS, and iSCSI
• Networking: LAN technologies, TCP/IP suite, DNS, DHCP, WINS, VPN, SNMP, NAT, VLAN, and firewall.
• Security: Microsoft ISA/TMG, IPTable, SSH, Enterprise Anti-malware/virus scanners Microsoft Forefront Security Client, Steelbelt Vipre, McAfee Enterprise , Nessus, Tripwire, AmaVis mail scanner, Barracuda appliance, Ironport appliance.
• Monitoring and Inventory Management: Solarwind Orion and ipMonitor, IPHost Network Monitor, MS System Center Operation Manager, Nagios, MRTG, and LANSweeper Network Inventory.
• Remote Access: MS Remote Desktop/Terminal Service, VNC, X-Terminal, Bomgard, SSH, Dell DRAC, HP iLO, KVM/IP, Adobe Connect.
• Computer Languages: PowerShell, Bash, PHP, C, C , BASIC, COBOL, Pascal, SQL, HTML, and Perl.
• Applications: MS Office Suite, MS Visual Studio, Adobe Acrobat, MS Sharepoint, and Media Wiki.

PROFESSIONAL EXPERIENCE

Confidential

Windows Systems Administrator

• Architected, installed and maintained Windows 2003-2008R2 server solutions for both production and development environments.
• Implemented and managed 11 Hyper-V virtual hosts including several Hyper-V virtual hosts clusters which together housed over 80 virtual machines. The clusters provided high availability to over 20 critical mission virtual machines that support the company core services.
• Implemented and managed a primary backup server using Microsoft Data Protection Manager 2010 with 25 TB of storage from mixed storage appliances for the purpose of backing up a large collections of Hyper-V virtual machines, SQL databases, department file shares, Exchange mail boxes, Windows system states, and SharePoint repositories.
• Implemented Remote Desktop Session Host to allow development and project management teams to access server simultaneous and increased productivity.
• Implemented the company VPN server using all the Microsoft client VPN protocols including PPTP, SSTP, and L2TP/IPSec to allow both remote and local employees to access resources without external firewall issues.
• Installed and administered SharePoint server, Lync server, TFS Team Foundation Server , SQL servers including in cluster environment.
• Architected, installed, and managed FTP system into a secure environment and sand-boxed each customer's FTP folder from other customer log-ins for minimize liability issues when transporting customers' sensitive data.
• Implemented FileVista web-based file manager to an existing FTP system and integrated to Windows authentication service for single sign-on.
• Resolved backup storage issue by adding inexpensive NAS appliances using iSCSI to DPM storage pool resulted a bigger 25TB raw storage and saving company over 10,000 in expense.
• Assisted in the planning, designing, documentation, and implementation of various systems to include desktop PC's, servers, network equipment, and software applications which sustained to employee growth.
• Worked with clients, software developers, technical writers, and web designers to deliver system solutions with right requirements.
• Monitored, planned, and coordinated the distribution of client/server software and service packs to ensured the systems is in healthy state and free from vulnerabilities.
• Created and maintained good technical documentation on SharePoint. Documentations have countless times provided contacts and explanations in resolving issues when emergencies have surfaced.
• Assisted in the planning, design, documentation, and implementation of various systems to include desktop PC's, servers, network equipment, and software applications.
• Made recommendations for new equipment and services to purchase and works with various vendors for procurement.
• Assisted in the organization and inventory of all hardware and software resources. Resulted in better tracking of cost and re-using resources without additional purchasing which save company thousands of dollars.
• Assisted help-desk support in hardware and software issues, and also assisted development team in MS TFS, ASP.NET IIS service, and other case related issues.
• Assisted as a backup for Exchange Server 2007, Cisco router including ASA , and Avaya IP Office 400 VoIP phone systems to ensure the continuity of the services provided to the company.

Confidential

Site Engineer contract

• Broad range of day to day responsibilities include monitoring 300 mid-range servers in 2 data centers, Veritas NetBackup, routine server maintenance, systems monitoring tools Tivoli Endpoints, HP Systems Insight Manager, HP Integrated Lights-Out iLO , VMware vCenter, and backup monitoring reports BreWS
• Managed, troubleshooted, and maintained Compaq/HP hardware in both data centers. Developed a relationship with vendor customer support in resolving server hardware issues.
• Remediation of hardware/software problems and unplanned outages through careful coordination, research, and communication with other groups. All teams are well informed and well prepared when it come to resolving issues with servers or services.
• Managed Active Directory users and server resources with Windows domains and Windows clusters. Used spreadsheet to keep track of temporary accounts for developers that are assigned to perform certain tasks and ensured security integrity of the systems.
• Responsible for local tape backup completion, archival, and off-site storage. Understood the backup procedure well enough that several adjustments were made in its scheduling to ensure the all backup jobs took place without overlap.
• Documented and designed process for Site Engineering team. This allowed for effective team-wide communication of assigned tasks and ongoing issues.
• Monitored and resolved tickets and requests. Group resolved approximately 40 to 70 tickets a day.
• Assisted in troubleshooting production issues with members of other teams within IT.
• Assisted the Windows Implementation Engineering team in building the windows operating system and ensuring that the server is in a supportable state.

Confidential

Systems Administrator

• Managed AIX 5.3 systems Used SMIT for administration and configuration . This include patching OS, installing recent version of IBM C-compiler and other software that is require for Lawson upgrade, and installing and improving services for better system administration tasks.
• Managed backup server using IBM Tivoli Storage Management a backup software for managing tape library system . Tasks include swapping tapes, tracking tape inventory, restoring files manually from tapes,
• Technical support for Lawson users including troubleshooting user access, fixing printer issues, and finding solutions and conversing from Lawson Software support site when Lawson issues surface.
• Basic SAN system duties on IBM DS4800/4000 storage appliances including creating LUNs, setting up new zones in SAN fabric switches, firmware updates, replacing failed fiber channel drives, configuring MPIO drivers on servers, and monitoring SAN health and performances.
• Implemented WebDAV calendar solution on Linux/Apache server for Outlook users to publish events for all departments.
• Assisted with Disaster Recovery tests by restoring Oracle databases from off-site tapes and making sure the Lawson software is running and able to access the databases within minimal downtime.
• Maintained the corporate web site that is using Apache/Tomcat services for their in-house solutions.

Confidential

Systems Administrator

• Installed and configured Windows and Linux virtual machines on VMware ESX 4 clusters according to customer's SLA.
• Persuaded IT executives to add another domain and implemented Microsoft IAS Radius servers to provide authentication mechanism for secure wireless, VPN, computer lab services, and many other services. Resulted a single-sign-on to many services across the campus.
• Implemented a mail gateway using Postfix to replace the out-of-date VMS mail server. In addition, it also fixed the mail traffic by adding throttle support to rate the flow on the mass mailing lists which have clogged the mail scanners.
• Responsible for installing, configuring and managing various network support systems such as Squid proxy servers, Postfix mail relay servers, Mailman mailing list servers, SNMP network monitoring server Cricket Network grapher and Nagios .
• Implemented NoCat Captive portal solution which authenticate users using wireless access points, and securing the USU wireless network which protected the university internal IT resources.
• Led, designed, developed, implemented, and managed campus-wide VPN services and its policies using Microsoft ISA 2006 allowed users to use OS bundled ease-of-use VPN client. In addition, created a VPN installer for Windows which pre-configured VPN client settings instantly. This became very popular over Cisco VPN client which has to be downloaded and installed manually.
• Proactively monitor systems health by physically inspecting environment and utilizing provided tools such as ipMonitor and Cricket network grapher.
• Evaluated and installed Mail a commercial web-based mail software servers that interface to our existing VMS mail systems and replaced the old web mail server.
• Managed a campus wide mailing list services. Consolidated other department mailing lists to one main mailing list which reduced administration and server cost.
• Racked hardware including Dell PowerEdge, Dell Blade chassis, Foundry routers, HP Procurves switches, and KVM/IP switches in a newly built data center in more organized fashion. Resulted in better cabling management and less downtime in cable tracings.

Systems Administrator

Confidential

• Responsible for all aspects of acquiring, installing, hardening, and administering LAN hardware, operating systems including Windows, Solaris, Linux, and Netware , end-user software applications, server hardware, and related infrastructure systems for the department.
• Implemented and managed the department-wide mail system using open-source email software including web-based email client and AmaVis solution spam and malware filter scanner . This solution allowed multiple clients to manage thier same mailbox from multiple computers.
• Introduced Isilon IQ 4TB storage appliances and configured it as an interoperability between Windows and UNIX based environments using Samba, NFS, and NIS/NIS services for file access in heterogeneous environment.
• Installed and managed department services including e-mail server, web server, file server, print server, and other various services for the department.
• Wrote script print tracking system for HP network printers to keep track of paper usage.
• Setup and deployed Windows desktop images to two computer classrooms and grad student lab.
• Some programming involve using scripting language including PHP, Expect, Perl, and Bash for creating web user-interfaces, system management automation, monitoring and notification systems.
• Managed inventory, and set policies and procedures for lab usage.

IT Consultant

Confidential

• Implemented and maintained high performance and cost effective Linux Beowulf cluster of 32 nodes using Linux OS and other various open source software solutions to allow tailored software to run in multiple tasks in distributed fashion. The customized programs will run at in several distributed tasks on the cluster getting faster results than it is to do it on a stand-alone workstation.

Confidential

Assistant Systems Administrator

• Performed maintenance and troubleshooting on NCR Unix servers, various MS Windows 95/98 desktops, scanners, serial line and network printers, serial terminal servers, web servers, PC-based cash registers, switches, modems, Sun SPARCstation, and LAN using various protocols.
• Maintained Emerald Information System EIS , a college bookstore integrated software, which includes point of sales, accounting, and inventory tracking system.
• Wrote and modified EIS COBOL modules, developed several UNIX shell scripts to meet end-user's criteria, fixed database files, etc.
• Implemented an interface between EIS POS server and Visa PassPort card system which process credit card transactions in short time by 70 which resulted faster lines at cash registers.
• Created and maintained bookstore official web site developed an on-line textbook search engine and book adoption database with course history for faculty use using HTML, CGI, and ASP technologies.