SUMMARY

• Aspiring for challenging Linux Development, Security Management and Implementation Management assignments using various domain level expertise and working with a reputed organization in the IT industry.
• An astute professional with over 15 years of experience in IT Industry with technical expertise in the implementation, operations and support functions of mission - critical business solutions using IT as a tool.
• Over 8 years of experience and extensive knowledge in Linux Administration under heterogeneous environments consisting of Red Hat Linux ver 5.x & 6.x, CentOS Linux ver 5.x & 6.x, Suse Linux 11.3, FreeBSD 8.0, Debian based Linux like Ubuntu, Mepis 5, Puppy Linux 5 & 6 and etc...
• Having experience in Cluster implementation with various application service and support with multi-platform environments
• Have worked with DevOps tools like Puppet, Chef for the automation & configuration management of the server architecture.
• Implemented SNORT for the IDS / IPS which handled to find packet level unwanted requests.
• Strong Experience with Shell scripting, Perl, Python and version control with SVN.
• Known of Migrations of Chef Server to AWS OpsWorks using which cloud services were automated.
• Experience with load balancer with Apache which integrated with Tomcat, JBOSS.
• Deployed Applications of the formats WAR, JAR, EAR on a Clustered environment
• Comprehensive understanding of administrative concepts pertaining to DNS, DHCP, Asterisk, UTM based Firewall, Ticketing System, PHP, SMTP, SNMP, JBOSS 4.0, Tomcat 6 and J2EE Services.
• Have been experience on various kind of security domain like network securities (IDS, Email Security), application securities (Apache securities, Database Securities) and Single sign-on (SmartCard and LDAP)
• Having expertise on Zimbra (Postfix) Server, FreeNAS, LTSP DRBD server, NagiOS monitoring tool.
• Having experience on Virtualization (AWS, VMWare, Xen & KVM ).
• Handle VMs on VMWare and taking VM backups on SAN
• Managing datastore for VMs in VMWare for configuration and space management.
• Experience with Installation, Configurations, maintenance and support on Openstack, Openstack services (Nova, Neutron, Swift, Keystone, Glance) and Eucalyptus. Automate all the Openstack installations and configurations via Chef Automation.
• Experience in customizing the kickstart, jumpstart, cobbler and VM templates to automate the insstallation of various servers.
• Application patch deployment via Jenkins
• Create a jobs in Jenkins for Maven deployment
• Experience with the performance monitoring tools like Nagios, Check mk, Splunk.
• Worked with 24/7 production support and ITIL practices like change management, incidence management, Problem management, Configuration & Capacity management, Release management for various JBOSS environment ( Prod, Test, Stage, QA, UAT).
• Knowledge with Networking protocols and systems including DHCP, DNS, FTP/SFTP, SCP, ARP, IP, TCP, UDP, SNMP
• Installation other package from repository via Yum / Yumx, RPM package installation, install via CPAN packages, deb packages install via apt-get, install via synaptic also install package via compile and install.
• Broad experience with MySQL, PosgreSQL Database servers and integrating with JBOSS and Tomcat servers
• Adept in analyzing information system needs, evaluating end-user requirements, custom designing solutions, troubleshooting for complex HIS (Healthcare Information System) management.
• Having experience on AdServer (Open Source) system implemented with impression click.
• Having installed Hadoop (Big Data) on staging environment.
• Have been worked on ownCloud to provide cloud bas WebDev / web interface.
• Having install also mass Mailer Application (Open Source)
• Implements automatic Backup System (Rsync, SCP with password and without password) via Crontab.
• Installation and configure as a client security in Samba permission, also configure Squid proxy for internet purpose accessibility with the facilities of Content filter (Dans Guardian) & HAVP (HTTP Anti-Virus Protocol).
• Implemented TrandMicro AntiVirus Server, Symantec AntiVirus Server and McAFeer Antivirus server on Linux and Windows platform
• Configuration experience of SAN Storage to create volume disk and mapping with HBA/FC host.
• Experiences with Veritas storage / MSA Storage.

TECHNICAL SKILLS:

Technology Expertise: Linux Admin, Shell Scripting, Python, JAVA / JSP / Servlet

Application Servers: JBOSS 3.2.7, JBOSS 4.0GA, JBOSS 6.3.0 GA

Operating System: RHEL ver 5.x & 6.x (x86 & x86 64), CenOS ver 5.x & 6.x, AIX 7.1, SunOS 5.11FreeBSD 8.0, Ubuntu 8.04, 9.04, 9.10, 10.04 LTS, 12.04 LTS, 13.10, 14.04 LTS

Servers Experience: DHCP Server, SAMBA, DNS (Bind 9), MySQL, PosgreSQL 8.0, NFS

Virtualization: VMWare, Xen, KVM, VirtualBox, AWS

Web Servers: Tomcat 4.1/ 5.5, Apache Web Server 2.4 / 2.3 / 2.0 / 1.2

Middleware: JBoss 4.0, JBOSS 6.3.0 GA

Framework & Patterns: Struts, Hibernate

Databases: MySQL 5.6, MySQL 5.4 MySQL 5.1, PosgreSQL 8.0

Platforms: Redhat Linux, Oracle, CentOS Linux, Suse Linux, FreeBSD, Windows XP/2000/NT/95/98

Version Control: Git-Hub, SVN, CVS

Big Data: Hadoop

Clouding: AWS, ownCloud

Scripting: UNIX Shell, Python, Ruby, PHP, Perl

J2EE Technologies: JSP, Servlet, JDBC

IDE: Eclipse, Netbeans 6.8, Netbeans 7.3

Automation /:

Configuration and:

CI Tools: Puppet, Chef, Cronjob, Shell Script, Jenkins, Maven, Dockers container

FUNCTIONAL:

• Installation / Configuration of JBOSS Application server, Clusters, Node Managers etc…
• Setting up and Maintaining Linux OS Server across an extensive selection of the feature set including Redhat cluster with DNS, DHCP, Apache
• Managing DNS, DHCP, SAMBA, User access also experience with JBOSS application deployments
• Expertise of NagiOS Open Source based network monitoring tool
• Manage LVM based disk space management for the server.
• Deployment experience with automated Shell Script for the leverage for juniors to take a backups.
• Created customized automated build Script, Unix Scripts and configured daily cron job scheduler tool which will send email to the group of the build result.
• Expertise with Performance Tuning of Linux, Database and JBOSS.
• Experience with Apache Web Server and Apache SSL Installation (CA - PKI) / Configuration and Maintenance
• Experience handling the Load / Stress testing of applications
• Experience working extensively with Linux, Windows systems
• Knowledge with administrating / Monitoring tools of Redhat Linux and Windows
• Managing space, performance of Redhat Linux.
• Troubleshooting Linux Operating system issues issue, Application service issues, MySQL database issues and any network issues
• Conducting periodic reviews with the customer and analyze calls and their performance trends to take proactive measures to reduce knowledge-based calls.
• Suggesting improvements in the operations and processes to make the system foolproof with the increasing securities.
• Interacting with various vendors for sourcing products and solutions and for closure of calls which are supported by them.
• Interact with other teams to work on the issues related to other infrastructure components
• Supporting Development, integration, production and infrastructure deliverables
• Supervising the maintenance and upkeep of software and hardware assets of the organization.
• Build, Developed and Implemented automated checklist for the L0(Juniors)
• Build and Deployment tools achieving SLA in-case of unavailability of seniors
• Superior shell scripting (Korn and Bourne Shells)
• Knowledge with Perl scripting
• Experience with JSP / Servlet / Hibernate / Struts / MySQL Application Development
• Integrating experience of plugins with NagiOS monitoring tool

PROFESSIONAL EXPERIENCE:

Confidential, CA

Sr. Automation and Linux Systems Eng.

Environment: RHEL ver 5.x & 6.x (x86 & x86 64), CenOS ver 5.x & 6.x (x86 & x86 64), 7.0 x86 64, AIX 7.x, SunOS 5.11, Redhat / CentOS Cluster (x86 & x86 64), NagiOS monitoring, Tomcat 5.5, UNIX scripts, Puppet, MS Windows server

Responsibilities:

• VM build by automation by using Confidential -OO and Python Script.
• Unix security implementation via UID and GIDs account with privileges.
• Implementing of centralized UNIX access.
• Active Directory administration and Linux SSD for centralized authentication tool
• FreeIPA (Identity Management) including account profile
• Designing for UNIX access / security
• Puppet automation technique, we use for user create, file privileges, IPTables, package installing.
• Maintains access by providing information, resources, and technical support.
• Maintenance of virtualization on Nutanix/KVM.
• Support on Oracle NFS server for Oracle users to setup roaming Home Directory.
• Handle around 648 VMs on VMWare and taking VM backups on SAN
• Handle around 562 VMs on OVirt (Redhat Virtualization Management)
• Handle VMs on Nutanix environment
• Implemented Foreman (Systems Management Tool)
• SQUID proxy implemented on Oracle Linux server.
• Database support on implementing, configuring, cluster configuring for MongoDB, MySQL, MySQL-Galera, PGSQL, OracleDB
• Java based application environment setup and log-rotation configuration
• Managing datastore for VMs in VMWare for configuration and space management.
• Automation of regular administration tasks with the Shell Scripting and Configuration management tools.
• Ensures authorized access by investigating improper access; revoking access; reporting violations; monitoring information requests by new programming; recommending improvements.
• NagiOS monitoring, Host and Service creation with email notification alert
• Updates job knowledge by participating in educational opportunities; reading professional publications; maintaining personal networks; participating in professional organizations.
• Accomplishes information systems and organization mission by completing related results as needed.

Confidential, SC

Linux Security Admin

Environment: RHEL ver 5.x & 6.x (x86 & x86 64), CenOS ver 5.x & 6.x (x86 & x86 64), 7.0 x86 64, Redhat / CentOS Cluster (x86 & x86 64), SpaceWalk Satellite Server, Snort 2.9.7.2 / Snort 2.9.8.2, Oracle, MySQL (x86 & x86 64), NagiOS monitoring, Tomcat 5.5, UNIX scripts.

Responsibilities:

• Linux OS installation in Sensor, Flow-Collector and Event Collector.
• Server installing, managing, kernel update from 2.6 to 3.x and patch update
• Have experience of OS Hardening for improving securities
• Establishes system controls by developing framework for controls and levels of access; recommending improvements.
• Worked with vendor for issues which can be handle under Vendor Management
• Chef automation technique, we use for user access, file privileges, IPTables
• Automate Configuration Management with Chef. Familiarity with the principles and practice of system configuration management and written playbooks for deployment of Hammer/Presto tools, Openstack Services (Nova, keystone, swift, Neutron, Glance). Written cookbooks for the same Openstack Services and automated configuration and infrastructure.
• Maintains access by providing information, resources, and technical support.
• Maintenance of virtualization on KVM, and ProxMox.
• Automation of regular administration tasks with the Shell Scripting and Configuration management tools (Chef, Puppet).
• Work with Dockers environment for test applications and test manifest
• Ensures authorized access by investigating improper access; revoking access; reporting violations; monitoring information requests by new programming; recommending improvements.
• Establishes computer and terminal physical security by developing standards, policies, and procedures; coordinating with facilities security; recommending improvements.
• Safeguards computer files by performing regular backups; developing procedures for source code management and disaster preparedness; recommending improvements.
• Develops security awareness by providing orientation, educational programs, and on-going communication.
• Updates job knowledge by participating in educational opportunities; reading professional publications; maintaining personal networks; participating in professional organizations.
• Accomplishes information systems and organization mission by completing related results as needed.

Confidential

Sr. Linux / Security Admin (Delivery Lead & Data Center Service Lead)

Environment: RHEL ver 5.x & 6.x (x86 & x86 64), CenOS ver 5.x & 6.x (x86 & x86 64), AIX 7.x, Confidential -UX 11.31, Redhat / CentOS Cluster (x86 & x86 64), Redhat Satellite Server, JBOSS, MySQL (x86 & x86 64), NagiOS monitoring, Tomcat 5.5, UNIX scripts, Automation: Chef and Puppet.

Responsibilities:

• Installed, configured and administered;
• Redhat Enterprise Linux ver 5.x & 6.x (x86 & x86 64), CenOS ver 5.x & 6.x, Suse Linux 11.3, Java 1.4 / JDK1.5 / JDK1.6, JBOSS, MySQL environment (Test, Stage and Production) on Linux with x86 & x86 64 architecture
• Apache Web Server 2.0 cluster with mod jk (load balancer), Virtualhost with DNS lookup
• Apache SSL Certification Installation (CA - PKI) / Set up.
• Created Shell Script to Orchestration of Components and server node to monitor detailed about caller
• App. server performance testing on Confidential blade server Linux.
• Provided Support 24X7 and responsible for all 148 Servers including cluster, Snort (IDS), Zimbra (Postfix) server, mysql database
• Have experience of OS Hardening for improving securities
• Used Redhat Satellite Server for updating packages at various location of servers where it deployed.
• Have been implemented staging environment on Virtualization with VMWare, QEMU and VirtualBox
• Automation: Puppet and Chef for user creation, backup.
• Work with Dockers environment for test applications and test manifest
• Have been implemented security on network level (IDS, Email Security), application securities (Apache securities, Database Securities) and Single sign-on (SmartCard and LDAP).
• Configured Bind9 for DNS server at various 11 project sites
• Server installing, managing, kernel update from 2.6 to 3.x and patch update
• Install and Configure Java based PACS system (Picture Achieve and Communication System) on server.
• Handle around 68 VMs on VMWare and taking VM backups on SAN
• Handle VMs on VMWare and taking VM backups on SAN
• Managing datastore for VMs in VMWare for configuration and space management.
• Have configured JBOSS application on Suse Linux 11.3 on the staging environment.
• Application patch deployment via Jenkins
• Create a jobs in Jenkins for Maven deployment
• Created automated shell script to check out code, build and deploy with cron job
• Implement and Configured NagiOS monitoring with various plugins.
• Monitored the production, test environments with the tools Nagios and splunk.
• Implement and Configured Confidential Data Protector 6.x / 7.0.
• Having installed Hadoop (Big Data) on staging environment with single node client.
• Configuring SAN Storage with creation of VDISK and mapping LUN with appropriate HBA / FC host.
• Developed and implemented automated shell script for backup of database, application and data.
• Followed QMS standards as per ITIL with all change, issues, risk and other procedures.
• Implement RHEL cluster for apache web server during the roll-out at new sites.
• Monitoring regular load of application server and doing operational support
• Implemented access securities on the MySQL DB.
• Do Log analysis when the case we face issue in site modules and site deployment
• Database backup validation from the restoring DB on staging environment.
• Implemented (DevOps) Puppet server / client for the automation and configuration management of server architecture through the manifest.
• Worked with vendor for issues which can be handle under Vendor Management
• Helping to 10 junior resource in daily works and guide them for the process of ITIL standards as per QMS.
• Assign daily task to L1 and L0 Linux admin, L2 - MySQL DBA and L2 Network Admin.
• Assisting to application administrator for the configuring of installing in SSL certificate (CA / PKI) of Apache.
• Monitor and Manage critical components, including the hardware, operating system, and the Application / Web layer
• Worked on ownCloud to provide cloud bas WebDev / web interface which has been sync data with mobile and client’s desktop.
• Suggested hardware sizing for testing, Staging and performance testing environments.
• Created installation, configuration and deployment document for Application server, Web Server.
• Developed Web based PHP tool for creation of Squid Proxy user for the helpdesk team.
• Developed JAVA based web tool for the Operational task for the managing services for juniors.
• Assist to network admin in the security improvement and designing of network architecture.
• Manage training SOP documents and arranging remote training to juniors.

Confidential, TX

Sr. Linux Admin

Environment: RHEL ver 5.x, CenOS ver 5.x, Redhat / CentOS Cluster, JBOSS, MySQL, NagiOS monitoring, Tomcat 5.5, Unix scripts.

Responsibilities:

• Installed, configured and administered;
• Redhat Enterprise Linux (x86 & x86 64), Java 1.4 / JDK1.5 / JDK1.6, JBOSS, MySQL environment (Test, Stage and Production) on Linux (x86 & x86 64)
• Apache Web Server 2.0 cluster with mod jk (load balancer)
• Created Shell Script to Orchestration of Components and server node to monitor detailed about caller
• App. server performance testing on Confidential blade server Linux.
• Have experience of OS Hardening for improving securities
• Provided Support 24X7 and responsible for all 69 Servers including cluster, MySQL database
• Integrated PHP with Apache via modules
• Handled PHP based CMS and implemented on Apache server with multiple websites
• Do Log analysis in case we face issue in site modules and site deployment
• Server installing, managing, kernel update and patch update
• Have been implemented staging environment on Virtualization with VMWare, QEMU and VirtualBox
• Configured Bind9 for DNS server at various 11 project sites
• Install and Configure Java based PACS system (Picture Achieve and Communication System) on server.
• Created automated shell script to check out code, build and deploy with cron job
• Implement and Configured NagiOS monitoring with various plugins.
• Implement and Configured Confidential Data Protector 6.x.
• Developed and implemented automated shell script for backup of database, application and data.
• Followed QMS standards as per ITIL with all change, issues, risk and other procedures.
• Implement RHEL cluster for apache web server during the roll-out at new sites.
• Monitoring regular load of application server and doing operational support
• Database backup validation from the restoring DB on staging environment.
• Helping to 10 junior resource in daily works and guide them for the process of ITIL standards as per QMS.
• Assign daily task to L1 and L0 Linux admin.
• Assisting to application administrator for the configuring of installing in SSL certificate of Apache.
• Monitor and Manage critical components, including the hardware, operating system, and the Application / Web layer
• Suggested hardware sizing for testing, Staging and performance testing environments.
• Created installation, configuration and deployment document for Application server, Web Server.
• Manage training SOP documents and arranging remote training to juniors.

Confidential

Lead Linux Administrator (Research & Development)

Environment: RHEL ver 5.x, CenOS ver 5.x, JBOSS, MySQL, NagiOS monitoring, Tomcat 5.5, Unix scripts, Zimbra, Endian Firewall, Ticketing System, SugarCRM.

Responsibilities:

• Handel escalation of L2’s & L1’s
• To deliver high-level performance and customer satisfaction on application level
• Server installing, managing, kernel update and patch update
• Have been worked on OS Hardening for securities
• Have implemented testing environment on Virtualization with VirtualBox, Xen and QEMU
• Have been implemented security on network level (IDS, Email Security), application securities (Apache securities, Database Securities) and single login by LDAP.
• Implantation & managing Mail Servers with security
• Worked with vendor for issues which can be handle under Vendor Management
• Implemented LTSP DRBD server for the thin clients as boot diskless node.
• Implemented PC based Open Source UTM typed of firewall with many UTM features.
• Do Log analysis in case we face issue in site modules and site deployment
• Implemented Open Source based Ticketing System with customization some features.
• Configured SugarCRM system with various kind of plugins.
• LDAP based setup implemented and configured on client level
• Own DNS server which needs to be configured with SPF, TXT record.
• Implemented OpenSource based storage box on PC based with FreeNAS.
• Monitoring regular load of application server and doing operational support
• Database backup validation from the restoring DB on staging environment.
• Integrated PHP with Apache via modules
• Handled PHP based CMS and implemented on Apache server with multiple websites
• Manage and Configuration of multiple VHOST with Apache.
• Integrated internet usage tool with Squid Proxy.
• Implement Sendmail CATCH-ALL server for the eMail-To-SMS facility for the customer.
• Migration all users from MS-Windows to Ubuntu Linux.
• Configuring VSFTP / Pure-FTPd for anonymous and user permission base.
• Involved for design IT architecture for their network.
• Implemented Zimbra email server with multiple domin
• Deployed/ supported over 6 applications which entails formats of EAR, WAR and JAR and JBOSS / Tomcat.
• Created Shell script for automated build process

Training: Linux Scripting, DNS Server, Linux Performance Tuning

Confidential

Sr. Linux & IT Administrator

Environment: CenOS ver 5.x, Fedora Linux, JBOSS, MySQL, PosgreSQL 8.0, NagiOS monitoring, Tomcat 5.5, Unix scripts, Zimbra, QMail Server, ASTERISK, A2Billing with Asterisk.

Responsibilities:

• Implementation Servers & managing
• Implementation IVRs with Asterisk based on Linux with 120 channel
• Integrated A2Billing with ASTERISK for incoming call with prepaid service.
• Linux based mail Mail Servers support on implementation & supports
• Implemented Zimbra email server which has been configured with Fetchmail tool to fetch emails from the CatchALL server.
• First level support on JAVA based application support
• Having experience on AdServer (Open Source) system implemented with impression click.
• Having install also mass Mailer Application (Open Source)
• Implements automatic Backup System (Rsync, SCP with password and without password) via Crontab.
• Integration imaging server for application server
• Bulk email sever on OpenSource technology which integrated with strong SMTP server
• Support juniors for user support on desktop problems
• Install and integrate PostgreSQL database with tomcat server.
• Wrote basic level of PosgreSQL queries as per the required data / report.
• Squid proxy server configured as transparent mode for the user.