SUMMARY:

• 11 years in designing and implementing high availability on Enterprise Linux/Unix environment.
• Proficient at DevOps Linux/Unix/Storage to meet company’s needs and SLA’s of clients.
• Proficient at implementation of Sunrise private cloud platform with puppet, VMware, Solaris Containers and Solaris LDOMS, AIX PowerVM VIO and Oracle VM (Xen) virtualization technology.
• 5+ years at designing and implementing on EMC SAN infrastructure DMX, Clariion technology, Veritas Netbackup (10+ years), data Deduplication and Business Continuity.
• Proficient at scripting in Shell and Perl and gaining skills in python and ruby.

TECHNICAL SKILLS:

OS / Virtualization / Services: Red Hat Enterprise Linux, Solaris, SUSE Linux ES, CentOS, AIX, Oracle Enterprise Linux, VMware ESXi, Ubuntu, Windows 2003/XP/Window 7, Linux provisioning by xCAT, Sunrise private cloud platform with puppet, Kickstart,Oracle VM for Sparc, Zones, PowerVM VIO, LPAR, Jumpstart,, mksysb AIX image - install, Autoyast-install, SSH, LDAP, NIS, NIS+, NFS, DNS, SAMBA(CIFS), SMTP, SNMP, DNS, DHCP, SSL, HTTP

HARDWARE: HP x64 64 Proliant servers DL360, DL380p, DL385, DL585, Dell x86 64 PowerEdge R720, R710, R820, R810 and R910, IBM x86 64 xSeries x3650 M3, x3850 M2, pSeries 595, 570 and 750, Sun/Oracle Sparc and x86 64 Enterprise servers model T5120, T5220, T5240, M3000, X2270M2, X4270M2, X4600M2, X4800, M4000, M5000, and E25K, Egenera bladeframe, Sun/IBM/Quantum Storage arrays and Tape Libraries, EMC DMX, VMAX & Brocade SAN, EMC/IBM VTL Dedupe gateway, NetApp filer, F5 BIG-IP load-balancer

SOFTWARE: Sun One LDAP Directory Server and Open LDAP server, Linux LVM2, Veritas Volume Manager and File System, Veritas Cluster Server and HA CFS, AIX LVM, ZFS, Solaris Volume Manager, Btrfs, Veritas Netbackup, Oracle Clusterware/Grid, Oracle RAC, SUSE Linux cluster HA ocfs2, Redhat cluster, AIX NIM, mksysb AIX OS image for deployment, Apache, iPlanet Web Server, Web Logic, Websphere, Kerberos5, Flash Jumpstart, kickstart and WAN boot, EMC Powerpath, ECC and SRDF, MPxIO, Multipath, Password manager, Sudo, Power broker, Autosys, Puppet, DNS and DHCP management through QIP. Nagios and Quest Foglight monitoring, Concord sysedge, Hawk and netcool monitoring, HP OpenView, Sun Management Center, Legato, Postfix, Sendmail, Sentinel mail gateways, Tripwire, Nessus Scan, Checkpoint firewall and Riptech intrusion detection system. MS project, MS Visio, MS Office

PROGRAMMING: bash and korn shell scripting, perl scripting, awk, sed, python, ruby, C, SQL, PL-SQL

PROFESSIONAL EXPERIENCE:

Confidential, JERSEY CITY, NJ

Consultant, Senior Linux/UNIX Administrator/engineer Level 3 support

Responsibilities:

• 5000+ Linux/Solaris global servers environment supporting firm’s equity, electronic trading, Market data and core business applications. x86 64 Linux servers running (Redhat Enterprise Linux 4.x,5.x,6.x, Oracle Linux 6.4 for oracle rac) and Oracle servers running (Solaris 10 Sparc and x64), Homegrown Private cloud platform “Sunrise” integrating xCAT and puppet, Veritas VCS, HA-CFS, Redhat cluster, ZFS, Oracle RAC RDBMS, weblogic, Azule Low latency JVM, tibco hawk, datawarehouse and in house application support.
• Developed command line system tool in perl for querying and extracting vital information from Server Runbook website.
• Design and implemented update to stencils of Puppet Enterprise Linux configuration management system for new and old server build.
• Enhanced and updated healthcheck and ops configuration ready post-install script for newly build system by Sunrise private cloud platform for ops also wrote script for checking hyper-theading is enabled or not on x64 systems.
• Setup and configuration of prod, UAT and contingency environment each consist of two nodes Oracle RAC cluster on Linux x86 64 platform.
• Setup, configuration and administration of prod, UAT and contingency environment each consist of two nodes Redhat Cluster on Linux x86 64 platform.
• Setup, configuration and administration of Veritas cluster for High Availability environment.
• Design and implemented method for Linux LVM2 host based live migration of data from old EMC DMX to new VMAX storage array.
• Routine support for VAS based AD authentication for system users and application service account on LINUX/Solaris systems
• Routine ongoing support participation for various ops project like enterprise wide SAN and NAS upgrade and Data migration, ILO/IMM system management interface upgrade, Firmware upgrade, CNR(disaster recovery testing), OS upgrade and system patch update etc.
• Provide global Level 3 system support as per 24x7 follow the Sun support model and used ITIL process framework compatible IBM Maximo for change management, incident management and routine support/operation.

Confidential, AUSTIN, TX

Senior Linux Systems Engineer

Responsibilities:

• 300+ UNIX/Linux servers environment supporting firm’s UNIX infrastructures, core tax/ financial management systems, treasury and core business applications. x86 64 Linux servers running (Redhat Enterprise Linux 5.x,6.x, SUSE Linux ES 11 SP1,SP2) and Oracle/Sun servers running (Solaris 10), VIO, SUSE ha-ocfs2 cluster, Veritas HA-CFS, ZFS, IBM DB2, Websphere, Oracle RAC RDBMS, Peoplesoft, weblogic, IBM datawarehouse and in house application support.
• Developed innovative tool for LINUX deployment and Disaster Recovery Process which is platform, distribution independent and cloud environment friendly.
• Design and implemented robust shared storage High Availability Environment using Linux open source component: OCFS2, OpenAIS heartbeat and Pacemaker cluster resource manager.
• Design, planned and implemented Linux configuration management system using Puppet.
• Design, planning and testing for porting of Puppet to Solaris and AIX.
• Setup and configuration of two nodes Oracle RAC cluster on x86 64 platform and Linux.
• Setup and configure Veritas HA-CFS for Oracle Solaris systems for High Availability.
• In depth knowledge of Linux lvm2 volume management and filesystems, recovered corrupted or lost volumes/data of 1TB to 10 TB in size.
• Developed Perl based plug-ins and created rpm package for extending functionality of Nagios Monitoring Solution.
• Modified and compiled Linux kernel module (SCSI tape driver) to increase number of virtual tape drives limit from .
• Design and implemented method for Solaris/Linux/AIX host based live migration of data from old Hitachi OPEN-V to new IBM DS 8800 storage array.
• Security enhancement through Apparmor and Tripwire implementation.
• Developed Central ROOT and ADMIN password change for Linux, Solaris and AIX.
• Design and implementation of secure NFS4 with nfs4 ACL across DMZ using only single TCP port for ERP project.
• Developed a script to configure AD authentication for system users on LINUX systems, working on open LDAP based authentication with AD sync.
• Developed a post-install script for system hardning and post-install configuration of LINUX systems and integrated it with Redhat Kickstart and SLES autoyast install profile for enterprise deployment.
• Design and implemented very efficient procedure for providing new home to nagios monitoring application and package/patch repository management tool.
• Planned and implemented Netbackup 6.5 to 7.1 upgrade roll out and backup infrastructure upgrade with VTL having De-duplication gateway.
• Developed a method for efficient rollout of pach on LINUX systems
• Provide general Tier-3 level technical support in 24 x 7 environment and used ITIL process framework compatible CA Unicenter for change management, incident management and routine support/operation.

Confidential, NEW YORK, NY

Senior UNIX/Linux Systems Engineer

Responsibilities:

• 250+ UNIX/LINUX servers environment supporting firm’s UNIX infrastructures, core financial management systems and core business applications.
• Sun Enterprise servers running (Solaris 10), x86 64 Linux servers running (Redhat Enterprise Linux 4.x and 5.x, SUSE Linux ES 10 SP3) and IBM pSeries servers running (AIX 6.1) NFS, Veritas Storage Foundation, Veritas HA-CFS, Solaris Volume Manager, ZFS, Oracle RDBMS, Sun One LDAP Directory Server, Oracle e-business suit, websphere, weblogic, Maximo, UCM, siebel,actuate,Oracle Fusion and in house application support.
• Deployed NYCHA UNIX/LINUX environment from scratch with few high end UNIX servers in 2003 and embraced all good technology to grow environment with greener, highly available and highly performing servers.
• Setup and configuration of Sun Enterprise LDAP (HA- multi-master replication) for single sign on for UNIX and LINUX Systems Authentication.
• Design and implementation of different method for system/application high availability.
• Design and implemented virtualization technology like VMware, Solaris containers, Oracle VM for Sparc and x86 for server consolidation and maximum utilization.
• Setup and configured template, cloning and Vmotion of Linux VM for VMware environment
• Setup and configuration of VERITAS HA CFS Cluster on Sun Solaris systems for high availability.
• Design and implementation of ZFS based storage management of SAN storage.
• Design and implementation of UNIX Netbackup 6.5 backup infrastructure consolidation and BCV volumes based Oracle database hot backup.
• Setup and configuration of two nodes Oracle RAC cluster on x86 64 platform and Linux.
• Design and implemented business continuity and recovery procedure for UNIX/Linux systems.
• Design and implementation of highly available central NFS system user home directory and global bash profile for Solaris and Linux.
• Provide general Tier-3 level technical support to in 24 x 7 to Operation team.
• Setup and configured secured YUM repositories for central package and patch management of LINUX Systems.
• Setup and configured secured central Web based Linux OS and Solaris OS build process (kickstart/jumpstart).
• Design and implemented WEBDAV (Internet based Distributed Authoring and Versioning System) for secure ISO image sharing and NFS share layout for software depot.
• Design and implemented homegrown central root password change management systems for Solaris and Linux.
• Design and implementation of best practice for LVM2 (volume manager) on Linux System.
• Setup and configuration of central OS flash archive repository and Avamar De-dupe technology for transmitting large files to Disaster Recovery Site.
• Design and implemented script interface for user, netgroup, SUDO privilege add/modify/update to LDAP server.
• Design and implementation of OS Live upgrade from Solaris 8 to Solaris 10 and Solaris 10 U4 to Solaris 10 U9.
• Design and implemented custom script for extending functionality of monitoring software and operation automation scripts for Netbackup environment.
• Design and implemented centralized SUDO-ldap with time based privilege expiration.
• Design and implemented low cost efficient procedure for data migration from one datacenter to 90 church street datacenter for Siebel systems, relocated Production Servers from remote data center to 90 Church Street datacenter
• Design and implemented strategy for enterprise wide UNIX/Linux Sendmail relay spam fix.
• Written homegrown scripts for automating secure SSL/PGP based bank file transfer with JPMC Bank.
• Evaluated and deployed greener (energy efficient) servers for server consolidation and tech refresh.
• Designed and implemented Sun Fire 15K/E25K domains and system controller security and flash jumpstart.
• Setup and configured internet facing (DMZ) advance procurement systems.
• Design and implementation of business continuity of NYCHA critical applications through SRDF technology.

Confidential, NEW YORK, NY

Consultant, Unix Systems Engineer/Admin

Responsibilities:

• 700+ UNIX/LINUX servers environment supporting firm's UNIX infrastructures in 24 X 7 global environment.
• Sun Enterprise servers (Solaris 2.5, 2.6 and 8 OS) and Linux servers (Redhat Enterprise Linux 2.1) environment supporting IT backend infrastructure like firm wide DNS, DHCP, Mail gateways and post office, web and e-commerce, backup, system monitoring, batch job scheduler, kerberos, web authentication,market data, firewall manager, intrusion detection system and DMZ environment.
• Part of a team responsible for design and implementation of RedHat Linux Egenera bladeframe cluster to handle Equity Markets application and transaction processing.
• Provide technical leadership, coaching, and best practices mentoring to less experienced individuals, and provide effective administration support to Sun high end enterprise server systems
• Perform routine maintenance activity: performance troubleshooting, deployment of new systems, trouble tickets in 24 X 7 global environment
• Review latest technology and suggest management in choosing right solution for the system infrastructure
• Responsible for upkeeping financial applications and system with acceptable performance of the application
• Migrated backup infrastructure servers from Solaris 2.6 to Solaris 2.8.
• Design and implemented shell script to consolidate 35 NIS domains through password manager.
• Completed successfully many enterprise wide maintainance projects like upgrading monitoring environment, new version of legato backup client roll out, ISS roll out, sysinfo roll out, system wide patch update. NTP configuration roll out, conf manager and password manager roll out. Played major role in implementing new backup infrastructure.
• Performed routine maintainance activity like performance troubleshooting, deployment and post jumpstart configuration of new server, system tuning to enhance performance, initial core dump analysis, taking care of trouble tickets. Supported systems 24 X 7 during on call schedule.
• Tune TCP/IP stack to increase performance on a legato server to offset increase in load.
• Moved EMC celerra file server from 1NYP to 180 Maiden Lane building and designed proper failover mechanism and disastor recovery.
• Performed apache web server configuration and routine maintenance.
• Maintaining business continuity of business critical applications through SRDF technology
• Implemented and configured riptech intrusion detection system and checkpoint firewall logging module in DMZ environment.

Confidential, NEW YORK, NY

UNIX Systems Administrator/Engineer

Responsibilities:

• 400+ UNIX servers environment supporting Confidential market data system and market surveillance.
• Sun Enterprise servers running Solaris 2.5, 2.6, 7 and 8, HP 9000 systems running HP-UX 11.0, NFS, NIS+, Veritas Volume Manager and File System, ODS, Solstice Adminsuits, Sybase, Oracle and in house application support.
• Installed snmp based enterprise wide system monitoring software (concord sysedge), written and integrated several scripts in to software for efficient paging and to provide added functionality tailored to production environment requirements.
• Installed Remedy trouble ticket systems with backend oracle RDBMS.
• Installed and configured sun management center 3.0 in to production environment for physical and logical view of all systems.
• Day to day system administration such as backup, restore per request, maintained and updated NIS+ and DNS database, in-house application migration and application upgrade, supported developer and dba community.

Confidential, NEW YORK, NY

UNIX Systems Administrator

Responsibilities:

• environment consisting of UNIX servers supporting the research, clinical and hospital's business and research info.
• Installed new and upgraded software and hardware on all servers as needed, wrote programs and shell scripts to automate system administration tasks, developed procedures which deal with systems security breaches for UNIX systems, installed and configured security packages and network tools, such as: TCP Wrapper and ssh.
• Day to day system administration such as backup, restore per request, in-house application migration and application upgrade
• Setting up and maintaining systems backup schemes and schedule, applied patches for bug and/or security fixes for all servers as needed. Performed printer administration duties including printer setup, hardware trouble-shooting and diagnostics. Maintained and updated NIS and DNS database.