Professional Summary

• Over 12 years of experience in UNIX of which 8 years specializing in Documentum Content Management Systems, System Administration and Network administration.
• Hands - on expertise in designing, setting up and maintaining Documentum Content Management Systems, large scale Unix based e-mail and instant messaging servers and web application servers.
• Specialization in High Performance and Veritas / HP High Availability Clustering Solutions.
• Extensive experience with systems and network administration and network design, C/C /Java, PERL Programming and pattern matching, PHP, Bash shell scripting
• Independent learner, receptive to new ideas, excellent team and mentoring skills
• Experienced in setting up and maintaining one of the Top500 Supercomputers - the 144-nodes Kabru, a scientific computing Linux cluster at The Institute of Mathematical Sciences, India.
• Sound Knowledge in maintaining Microsoft Exchange 2003, Active Directory services on Windows 2003 servers.
• Experienced in design and implementation of BCP and DR Procedures.
• Exposure to industry leading standards SOX and ISO 27001.

Technical Skills

Content Management System

EMC Documentum 5.x, 6..x

Operating Systems

Linux All major distributions, Red Hat AS, EL 4 / 5, Compaq Tru64, AIX 5.1, 5.3, Sun Solaris 8, 9, 10

Programming Languages

Java, Perl, PHP, Bash Shell scripting, RegEx, sed, expect, awk as needed for systems setup, backup and maintenance

Networking

TCP/IP, Dolphin SCI cluster-Interconnect, Network troubleshooting, configuration, maintenance and upgrades, DHCP, SNMP, Lucent Vital QIP

Security

Documentum ACLs / Permission Sets, Open SSH, SSL, SFTP, OS hardening, disabling or encrypting unsafe network services, IP Chains IP Tables, EDI, Security Policy Implementation, Network/Host Security Auditing.

Software

Webtop 5.x, 6.x, DAM, MWS, Web Publisher 5.x, 6.x, Documentum Administrator 5.x, 6.x, Composer 6.x, xPlore 1.x, ADTS, SCS / IDS 5.x, 6.x, xCP, TaskSpace Workflow Manager 5.x, Application Builder 5.3, iDQL, iAPI, OpenMigrate, Solr, Captiva Input Accel, Kofax Capture, SMTP Postfix, Postini, Sendmail, qmail, Procmail, Fetchmail, Apache HTTP/HTTPS, Tomcat, Weblogic, DNS BIND 8/9 Lucent Vital QIP - DNS/DHCP, Kickstart, NFS, NIS, POP, IMAP, PPP, Samba, Veritas Cluster Server, Volume Manager and Netbackup, Open LDAP, XMPP, MAPI, X configuring servers, desktops, application servers, XDM .

Database

MySQL, Postgres, Sybase, Oracle 9i, 10g, 11g

Monitoring

Hardware

HP Open View, ESM, IPMI, Sysmon, top, sar, Zenoss

HP Integrity 4604, Sun Fire V890, E6900, Supermicro, Kofax Capture / EMC Captiva

Remote Administration

Citrix Metaframe, RDP, VNC, SSH

App / Web Servers

JBoss 4.x,5.x, IBM Websphere 5.0/6.0/7.0, BEA WebLogic 8.x, Apache Tomcat 5x,6x,7, IIS 5.0/6.0/7.0

Technical Experience

Technical Lead

• Leading this Documentum upgrade and data migration project in a heterogeneous UNIX / Linux environment handling all technical tasks from scratch starting design documentation, technical diagrams and installation guides. The client is running Documentum v6.0 to manage highly secure content required for day to day operations of several nuclear power generation plants owned and operated by the client. The goal was to upgrade Documentumv 6.0 to v6.7 SP1 with all up-to-date patches and migrate all interface applications that talk to existing system.
• My role in this project include installing and configuring Content Server with HA on Red Hat Linux 5, Content Transformation for Documents to PDF using ADTS, AutoCAD drawings to TIFF images using CADRenderNET, migrate from SCS/IDS / Google Enterprise Search in existing system to OpenMigrate / Solr / HPI in the new system, Configure Single-SignOn using Netegrity Siteminder and setting up xPlore for Full Text Indexing/Search. All existing Java, .Net applications, Webtop WDK Customizations, scheduled jobs and end user interfaces are migrated to the new system running v6.7 SP1.

Environment: SunOS 9 Red Hat Linux EL 4/5, Oracle 10g, Documentum 6.7 SP1, xPlore 1.2, OpenMigrate, OpenContent, Solr, HPI, Netegrity Siteminder, D2 4.0, xCP, TaskSpace 6.6, Java 1.6, Veritas VxFS, ADTS Advanced Document Transformation Services, Ascent Capture Internet Server with Kofax Capture, CADRenderNet 1.3, AutoCAD 12, JBoss 5.1.

Lead Production Engineer at

• Manage Engineering Operations of EMC Documentum 6.5 / 6.7 CMS Content Management System environments that include both production and non-production UAT, QA and Development stacks.
• My job role involves routine troubleshooting, extensive design, documentation, support and architecting EMC Documentum Content Management Systems on Red Hat Linux servers that serves as a publishing platform for articles to various Internet facing web sites.
• Troubleshoot day-to-day technical issues faced by CMS end users, work with other Systems, Database and Network Operations teams for server, database and storage provisioning, request and co-ordinate set-up of firewall rules, install and configure Documentum distributed content management systems that publishes video and web content to our public facing portal web sites.
• Provide operations support of CMS systems and Content Transformation Services applications, administration, monitoring performance and stability of the publishing platform by deploying builds, applying bug-fixes, patches and software upgrades, utilized my expertise in Documentum DQL and API tools for automating repeating tasks as well as troubleshooting publishing related technical issues.

Environment: EMC Documentum 5.3. 6.5, 6.7, DFC, UCF, iDQL, iAPI, DFS, DAM Digital Asset Manager, MWS MediaWorkSpace, WebPublisher, Documentum Administrator, Java, .net 2.0, 3.5, Apache Tomcat 6, JBoss 4, RHEL 4,5, Oracle 10g, 11g, jdbc, xCP, TaskSpace, CTS Content Transformation Services FlipFactory, MTS Media Transformation Services, AVTS Audio Video Transformation Services .

Confidential

• Responsibilities include but not limited to maintaining several Unix Solaris based mailhosts running Postfix or Sendmail and CMS servers running Documentum 6.5 on top of Solaris 9 / 10 or RHEL. My deliverables include install and build new mailhosts based on Sun hardware and Solaris operating System or Linux on Intel hardware, Co-ordinate firewall requests, OS hardening, patching, setup networking, software installation, configure SMTP using Postfix or Sendmail, configure HTTP / HTTPS on Apache, Tomcat, JBoss based on the application groups requirements. I provide escalated L3 level production support for these unix mail and CMS hosts which are placed both on the Internet Boundary as well as internal network.
• I was also involved in major projects including migrating existing Sendmail based hosts to Postfix and consolidation of Unix messaging infrastructure of two business divisions. I also take part in troubleshooting major issues in Jabber based Instant Messaging Systems.

Environment: Documentum 6.5, DFC, DFS, iDQL, iAPI, Webtop, EMC Captiva, Sun Solaris 9 / 10, RHEL 4, Apache, Tomcat, Oracle 10g, 11g, MySQL, Postfix, Sendmail, Postini Perl, SSH, SFTP, AD, Exchange 2003, Bash, Perl, Proprietary Configuration Management.

Unix Systems Administrator

• I was responsible for maintaining SMTP servers running qmail, Sendmail or Postfix, proposing and implementing changes, smtp queue monitoring and balancing, maintain Postini, troubleshoot escalated issues, write shell scripts and perl scripts essential for e-mail server maintenance, log file analysis and reporting, and work closely with diverse application teams managing legacy, web and database applications assisting them troubleshooting application email delivery.
• Also involved in major projects including email server migration from Sendmail to Postfix and consolidation of Unix messaging infrastructure of two business divisions. I also took part in troubleshooting issues with Application Containers Tomcat and JBoss.

Environment: UNIX Sun Solaris 9 / 10, RHEL 4, Apache, Tomcat, JBoss Oracle 10g, 11g, MySQL, Postfix, Sendmail, Postini Perl, SSH, SFTP, AD, Exchange 2003, Bash, Perl.

• Handled many projects including integrating several web sites content into a single large online repository based on Red Hat Linux and Veritas Cluster Server for Apache and managed by Documentum Content Management System. The primary challenge was to migrate content from CMS systems running various versions of Documentum and also a proprietary java based CMS.
• My primary responsibilities include setting up environments based on RHEL 4 on Intel hardware, networking, install and configure Apache and MySQL, developing Bash shell scripts and Perl scripts which were used for html content extraction / transformation / tag removal / modification, automate file transfers using SFTP, maintain and troubleshoot issues on CMS systems that run on Linux, write MySQL stored procedures, migration of transformed content within different Red Hat Enterprise Linux hosts.

Environment: RHEL 4, Apache, MySQL, Perl, SSH, SFTP, Documetum 5.3, Proprietary CMS.

• Primary responsibility is to maintain uptime and availability of a HA cluster, a 3 node Oracle Real Application Cluster running on IA64 based HP Integrity 4604 servers running RHEL 4 with attached SAN Storage device HP EVA 3000 connected using EMC Brocade switches.
• Responsible for maintaining production Tumbleweed appliances.
• Maintained a Veritas clustered production DNS management server running Lucent Vital QIP on Solaris.
• Setup and maintain Instant Messaging for an internal group using Jabber.
• Responsible for setting up, maintain and troubleshoot issues in crucial RHEL 4 and Solaris 8 based production servers including DNS and DHCP servers running Lucent DNS and DHCP as well as Bind DNS, HTTP Proxy servers running Squid, SSH Proxy servers with WinBind Authentication, FTP Proxy servers, Syslog servers, Bash shell and Perl scripting.
• Experienced in setting up, maintenance and troubleshooting of EMC Documentum Server 5.3.0 on Linux with Oracle database v 9.2.0
• Created numerous Power-Point presentations to describe group's responsibilities, GUI databases to help production support to be more efficient. Automated manual activities to improve group's productivity
• Responsible for installing, configuring and maintaining all AIX 5.1, 5.3 and Linux stand alone servers and highly available clusters with Java based JBoss application servers independently.
• Additional responsibilities include maintenance of qmail servers on RHEL 4, and Alpha servers running Compaq Tru64 Unix.
• Have team-worked in setting up a 8 node blade server architecture for Citrix load balancing cluster.

Environment: Solaris 8, RHEL 4, HP Integrity, EMC Brocade, HP EVA3000, Lucent Vital QIP, Veritas Cluster Server, Volume Manager, Oracle RAC, AIX 5.1-5.3, Syslog, Squid, DHCP, Apache, Perl, Bash

Confidential is a national institution for fundamental research in the mathematical and physical sciences. Project ILGTI required a Teraflop class supercomputer for running large scale numerical simulations in the area of Confidential These computations are used in predicting results of experiments at CERN Geneva and. I was given the assignment of setting up and maintaining this supercomputing facility running on Red Hat Linux.

• This role was challenging with a lot of troubleshooting and learning opportunities
• The number of computing nodes is 144 and installing and upgrading operating systems on all the nodes was done in an automated way
• Major responsibilities include hardware and software upgrades, system monitoring using self written bash, PHP and PERL scripts
• Design and implement backup policies using PERL, PHP and Bash scripts. Troubleshooting hardware, software, SCI Cluster Interconnect
• Scientific applications deployment and tuning, system performance and health monitoring using IPMI. Benchmark using high-performance Linpack
• Queue and resource management using Torque
• Independent learning on Scali MPI, a proprietary MPI suite from Scali, Norway and Cluster Interconnect, SCI wulfkit 3D from Dolphinics
• Developed a web based application for recording log information and viewing online. Automated monitoring of SCI interconnect links via email alarms for proactive responses rather than costly reactive manual interventions
• Automated temperature monitoring using cron scripts instead of manual runs of CPUBurn utility to reduce risks of CPU overheating in the Kabru scientific cluster
• Have first-hand experience in setting up the cluster and coordinating with various vendors.
• Experience in quick turnaround resulted in us making an entry into the Top500 list
• Installed Brownie, a terabyte Raid controller DAS and tuned it for best performance and fault tolerance
• Have experience in configuring automated OS installation and upgrades
• Was able to come up with solutions for limitations like Intel 8254x Gigabyte Ethernet driver not available as a statically linked module in the boot kernel
• Prevented a would-be disaster by escalating overload of the Cluster's electrical distribution board in a timely manner
• Setup and configured IPMI View, a Java based GUI front-end for IPMI system health monitoring utility
• Due to performance issues with the GUI, worked with the vendor to come up with a command line interface which can be conveniently used in cron / PHP scripts for automation.
• Developed numerous automation scripts in PHP, Perl, and bash for regular System administration tasks like re-configuring the ethernet device from eth0 to eth1 in all compute nodes, reboot all nodes into memtest by default, detect drive failures in compute nodes etc
• Came up with a solution for 1GB array limit in Linux as our scientific applications needed more than that.

Environment: Red Hat Linux, Fortran, MPI, Supermicro X5DPAGG, Intel XEON, Bash, Perl, IPMI, SCI, Dolphinics Wulfkit.

Linux Systems Administrator

• Led a small team of Linux System Administrators providing commercial Linux Support to Government and private organizations
• Built a 3 node Linux based cluster machine for 3D rendering purposes
• A web-based mail solution on both intranet and internet was implemented for employees
• A middleware database driver for accessing existing large MS-Access database was built as a PHP application running on Linux OS
• Apache web server install in a LAN with multiple users having their own web document root directory for document sharing application
• Research and implement diskless nodes using EtherBoot
• Provide technical support to School of Mathematics, Anna University
• Configure a secure internet facility for a leading engineering college's computer labs including restriction of some sites using VNC viewer
• Implement and configure Apache web server with JServ for web hosting

Replicate MySQL database for a client with manufacturing units at various geographical locations.