SUMMARY:

• Over 12+ yrs experience in Installation & Administration of UNIX(Linux, Solaris) Production environments and Intranet Lab Administration.
• Extensive experience in the field of System Administration in many Unix flavors which include Red Hat Enterprise, SUSE, Slackware Linux, Solaris 10,9,8,7,2.6,2.5, AIX 5.1,4.3 and HP - UX 11.11 operating systems, VMWare and network security, network design and UNIX backups.
• Extensively worked on Perl and Shell scripting including Perl/CGI based web and multithreaded programming.
• Extensive experience in Postgres/Mysql/Oracle Installations and configuration across all platforms in production environments.
• Advanced troubleshooting to find root cause and optimization skills.
• Extensive Experience in Hosting Websites and their maintenance, including all internet related services.
• Expertise in integration of authentication mechanism in mixed environment involving Windows ADS, Linux Proxy etc. Migration of authentication to LDAP including Mail server authentication.
• Expertise in open-source applications.
• Experienced in assessment, capacity planning, proposals, design and implementation of mission critical systems and networks.
• Experienced in managing team of six (6) Unix Support group.
• Capable of installing and configuring any new applications on any Unix servers.
• Capable of coding in C and Java.
• Very strong in Server Installations, Intranet Setup which includes, NFS, NFSv4, NIS, NCPFS, DNS, E-Mail, POP3, Firewalls(ipchains/iptables), Squid Proxy, Samba, DHCP, Apache Web Server for Intranet and Internet Proxy Server, Jserv/Tomcat (Apache & Servlet runner), Back up of Real Time mirror servers.
• Highly experienced in Storage setups, RAID, Logical Volume Manager, system backup design and disaster recovery planning.
• Good experience of Windows NT/ 2000/2008/2012 ADS.
• Expertise in scripting to fully automate backups, configuration/cluster management, data mirroring etc.

TECHNICAL SKILLS:

Operating Systems: Linux 2.0 - 4.x Kernels (RHEL 6.x/5.x, Slackware, RedhatAS 3-4, SUSE SLES 9-11, Fedora 1-22, CentOS, Ubuntu), Solaris 2.4-2.10, AIX 5.1, 4.3, HP-UX 11.11, Windows 2012 server

Programming/Scripting: As necessary for systems setup and maintenance tasks, Experience in writing text parsing scripts for tasks like different database replication and polling. Perl, Perl/DBI, Perl/CGI, SNMP+RRDtool scripting, Java Servlets, Shell scripting (sh/bash) C, Assembly 8086, PL/SQL make, python, REST API, json parsing.

Database: Oracle 8x/9i/10G, MySQL 2.3-5.1, PostgreSQL 7.3-9.1

Security: Advanced knowledge of Unix security, Secure internet services, LAN/WAN security, VPN, Firewalls (IPCHAINS, IPFilter, NetScreen), Encryption (PGP, GnuPG, SSL), SSH (SSH v1, v2 and OpenSSH), tcpwrappers, Network/Host Security Auditing

Software: DRBD, Heartbeat, Apache HTTP/HTTPS servers, Squid Proxy server, DNS (BIND 4/8/9), Emacs, Vi, Cricket, unnoc, Splunk, Nagios, Webmin, Ed, Ex, VMWare Virtual servers, Veritas Volume Manager, Veritas Cluster File System, Veritas Netbackup, Document Direct, Tomcat, JBoss, Web logic, Web Sphere, NFS, NIS/YP, POP, IMAP, PPP (Solaris/Linux Kernel PPP), SMTP (Qmail, SMTPAUTH, TLS, Postfix + amavis + spamassasin + clamav), LDAP(QMail + LDAP), Samba, NCPFS, MRTG + RRDtools, Source code control (SVN, CVS, RCS), X Window System (configuring servers, desktops, application servers, XDM), AbInitio V2-12-2-m4, Autosys 4.0.

Hardware: All forms of x86 hardware (from laptops to quad Xeon processor machines)

SUN Enterprise servers: E6500, E4500, E480, E250, IBM RS6000 SP, HP 9000, HP Superdome, IBM Netfinity servers, d100 disk array, SUN Fire, Compaq, Wipro, Modi Olivetti, & Dell, Cisco 1700 router, Sonicwall and Multitech voip switch, Cisco DCM D9900.

Admin Tools: JIRA, VMWare Vcenter/ESX, Apigee, AWS, Provisioning tools (Chef, Blacksmith, Cobbler, Kickstart, Preseed), LeftHand SAN, EMC PowerPath, EMC Navisphere, EMC Automated Resource Manager, EMC Access Logix, EMC OnCourse, Veritas Volume Manager, Veritas Cluster Server, Veritas Global Cluster Manager, Solstice Disk Suite, Solstice AdminSuite, Sun Management, HP OpenView Storage Manager, HP OpenView Protector 5.5, Legato Net backup, Admintool, CDE, SAM, SMIT, YaST2.

Networking: Complete understanding of TCP/IP, UDP, ICMP, Network troubleshooting,Server configuration, Physical network maintenance and upgrades, Basic Cisco switch and router maintenance, DHCP, SNMP.

PROFESSIONAL EXPERIENCE:

Confidential, Painted Post, NY

Sr. Systems Engineer

Responsibilities:

• Support and automation for Datacenter migrations.
• Administration of VBlock.

Confidential, CO

Sr. Systems Engineer - DevOps

Responsibilities:

• Supported HP Cloud Services Infrastructure.
• Automated various tasks using perl/python/bash and REST APIs.
• Setup and configured Apigee API services.
• Setup and administration of Postgres DB.
• Developed scripts for uploading and rotation of DB backups into Swift(cloud) Object storage using REST APIs for Apigee project.
• Provisioning of Linux nodes using Chef and Blacksmith (in house tool).
• Jira setup and administration including defining workflows, new projects, migration of projects/ components, field configurations, sprint boards setup using JQL, mapping etc. Integrated AD authentication, HIPChat notification and Wiki.
• VMware vcenter administration. Developed scripts for new vm creation etc.
• Support of backends such as LeftHand Network storage, open-source databases - Postgres, Mysql, Mongodb.

Confidential, Oldsmar, FL

Sr. Systems Engineer

Responsibilities:

• Developed scripts to automate and to manage configuration across servers.
• Developed monitoring and statistics gathering scripts.
• Installation, configuration and troubleshooting Linux(RHEL & Fedora)/Solaris servers/services.
• Tuned Postgres for high volume of monitoring data inserts(2 million a day).
• Developed scripts to rotate table partitions.
• Developed web interface for querying monitoring data and charts.
• Developed scripts for Postgres backup and DR.
• Developed and maintained Perl scripts to generate Server statistics, charts with Postgres as backend.
• Setup and tuned Postgres failover using DRBD.
• Developed scripts to migrate data from MySQL to Postgres DB.
• Developed a cloning system to automate Linux server installations.
• Installed & configured Video Library Servers for Video Feed archiving.
• Completed Data Gathering scripts development as part of Phase I HP-SiteScope implementation project. Developed perl scripts to Gather Job complete status from Sybase DB and then store and update Oracle DB connected to SiteScope Monitoring interface.
• Plan and implement Disaster Recovery for Media Servers.

Confidential, Newyork, NY

UNIX Systems Administrator

Responsibilities:

• Linux Cluster(RHEL/DRBD) setup and management for Disaster Shelter Management.
• Managing VMWare ESX boxes with Virtual RHEL/SLES(Suse Linux Enterprise Server) servers hosted by various govt. agencies.
• Perl Scripting for mrtg/rrdtool reporting, status reporting of VMs in a cluster and netapp disk monitoring using SNMP.
• Day to day work involves monitoring, new VM capacity planning and setup, RHEL/ SLES(Suse Linux Enterprise Server) installations, network configuration.

Confidential, Newyork, NY

UNIX Systems Administrator

Responsibilities:

• Managing more than 300 IBM JS20 blade servers spread geographically across UK and USA.
• Terminal Server Setup, Thin client configuration, Administration & Monitoring of blade servers running JBOSS.
• Deployment of applications to blade servers.
• Installed and configured Terminal Server with XDMCP using SUSE SLES 10 on IBM power architecture.
• Scripting for automation of deployments using SNMP calls to HMC.
• Base kernel package configuration
• Day to day work involves deployments, new blades setup, ldap, dns, mail server, iptable, vpn firewall maintenance, secure transactions involving gpg and ssl.

Confidential, Herndon, VA

Sr. UNIX Systems Administrator

Responsibilities:

• Providing 24x7 supports to Dev, Test, UAT and Production environments.
• Web Server Setup, Installation, Administration & Monitoring (Weblogic Server 8.1.5, AbInitio) on Sun E480/4500 Boxes
• Deployment, troubleshooting and Monitoring enterprise applications on BEA Weblogic Application Server 8.1.
• Building Linux servers, Installation & Configuration O.S for Application Servers
• Involved in setting up the cluster environment for WebLogic, Autosys and AbInitio servers
• Installation, Configuring and integration of the Ldap server
• Kernel updating and performance tuning.
• Working closely with development teams to establish environment checks for migration of projects from test to uat and production.
• Developed shell scripts and deployed using Autosys to automate the maintenance process of the Web Logic and Abinitio.

Confidential

Sr. UNIX Systems Administrator

Responsibilities:

• Administration of 72 servers (27 Linux, 32 Solaris, and 13 HP-UX) of STGIL clients who hosted the product Renaissance 3.0 - Policy Admin, Billing and Claims system and additionally taking care of the LAN infrastructure like mail/proxy servers. (Solaris 7, 8, 9, Linux Red Hat enterprise AS3, 4, SUSE SLES 9, AIX and HP-UX 11.11).
• Mail server, Firewall on Linux, Sonicwall Firewall and VPN.
• Windows 2012 Active Directory File Server Administration.
• Solaris 8/9 administration with Oracle, Apache, Oracle Apps.
• Veritas Netbackup and Veritas cluster administration.
• HPUX development server maintenance.
• Linux Squid Proxy authentication migrated to use windows ADS authentication.
• Cisco router 1700, Sonicwall and internet leased line maintenance.
• Multitech VoIP switch maintenance.
• Migrated Qmail with /etc/passwd to Qmail+LDAP on LInux.
• Migrated the LAN from static to DHCP on Linux.
• Porting applications on Linux development servers to Solaris Production environment.
• Introduced Open Ticket Requesting system in the organization and phase wise migrated support teams from traditional email systems to centralized OTRS. Also conducted training for the support team.
• Developed scripts for fully automated Linux based NAS and tape backups.
• Documented and Implemented Disaster Recovery plan.
• Developed scripts for log analysis, reporting, network monitoring and reports
• Developed software in PERL for Software License management, this gathers data from all computers in an ADS domain remotely.
• Implemented network monitoring graphs using rrdtool and mrtg on LInux.
• Maintenance and configuration of VPN connections between NY and Mumbai office.
• Capacity Planning, Setup and Administration of Solaris servers hosted at MCSP and client sites at USA

Confidential

SYSTEM ADMINISTRATOR

Responsibilities:

• Maintaining infrastructure for a total of 140 users.
• DHCP implementation on Linux.
• Windows 2000 Active Directory File Server Administration.
• Support and Administration of VMWare Virtual servers.
• Solaris 8 administration with WebLogic, Oracle, Apache.
• Veritas Netbackup and Veritas cluster administration.
• Linux Proxy Gateway Administration.
• Cisco router 1700, Netscreen Firewall administration and maintenance.
• VPN setup to connect Chennai and Mumbai Office.
• Remote Data Mirroring Service installation and configuration for Hurix.com & redinq.com
• Mail server, Firewall on Linux, Netscreen Firewall.
• Capacity Planning, Setup and Administration of hurix.com Leased Linux server at CIHost, USA.
• Oracle DBA support for installation, maintenance and tuning.
• EMC CLARiiON, CX-100 SAN implementation
• My Major achievements are the setup of the Data Mirroring service eliminating the need for any ftp by using rsync+ssh, samba, apache, mysql on Linux servers. Security was the driving force to eliminate ftp/telnet altogether and to keep the packet sniffers at bay.
• I also setup the total Qmail based mail service for hurix.com. This year migrated to Postfix for easier integration with content scanner amavisd-new, spamassasin for spam filter, clamav antivirus, feature rich OpenWebmail interface on LInux.
• Carried out Infrastructure upgrade from 60 users to 140 users. Cat6 based networking, Backup policy planning and implementation. Wrote numerous perl scripts to automate routine tasks e.g Uploading interface which uses rsync in the background, Helpdesk interface, Oracle backup scripts, Tape backup scripts.
• Implemented NAS system, RAID 1 based backup for file server. Linux+samba integrated with Active Directory for proxy auth and extending file serving capability to Cheaper Linux box with SATA RAID1.
• Implemented Disaster Recovery plan and documented DR for CMM certification.
• Wrote perl scripts to automate Software Audit, patch management.

Confidential

UNIX CONSULTANT

Responsibilities:

• Installed Linux (RedHat 7.1) on Intel hardware.
• Configured ipchains.
• Installed Qmail & Fetchmail on Linux.
• Configured Qmail & Fetchmail for Mail download from a single account and distribute to multiple users using Qmail.
• Installed and configured Apache with PHP4.
• Installed & configured Omail-webmail & Omail-admin for mail accessing & administration respectively.