SUMMARY:

• Red Hat Enterprise Linux (RHEL), SUSE Linux, Solaris, Cloud Technologies, DevOps, VMware, Unix Administration
• Network Operations Center (NOC), Databases and Data Center Migration.
• Expertise in Installation, Configuration of Package and Patch Management through Red hat Satellite Server.
• Supported middleware application environments such IBM WebSphere Portal/WAS/ MQ/Cognos.
• Deployment, patching and troubleshooting of middleware application environments and systems.
• Setting up Network Environment using UFS, ZFS, NFS, NIS, DNS and DHCP.
• Expertise in creating and managing Logical Volume Manager in Red Hat Linux.
• Expertise in ETL techniques using Informatica Power Center 7.x, 8.x, Oracle PL/SQL Stored Procedures to Extract and Transform data from various data sources and Load to the Transactional/Dimensional Databases.
• Tuning Kernel parameters based on application requirement.
• Experience setting up SSL s on Cassandra, Apache and Tomcat
• Hands on experience with SSH Configuration, SSH files.
• Worked on Cloud Platforms: AWS, VMware ESXi, Microsoft Azure, Rackspace, Open stack.
• Worked on VMware tools like Platespin, VMware Converter
• Disaster Recovery and Planning.
• Back up and recovery software like Net backup 5.0 and 6.0 on Linux environment.
• Experience with Veritas Volume Manager (VxVM), Veritas File System (VxFS), Veritas Net Backup, Veritas Clustering with SAN, NAS environment.
• Experience working in SAN environment like EMC Symmetrix DMX3, DMX4 and Clariion CX3 series arrays.
• Experience with F5 load balancing.
• Installation, administration, implementation, testing and maintenance of complex and heterogeneous networks consisting of Linux (Red Hat)
• Experience with Shell scripting, bash scripting, Perl, Python languages.
• Experience with DevOps and automation tools like Chef/Puppet.
• Handling and generating tickets via the Remedy ticketing tool.
• Knowledge of Routers, Switches, Hubs, Firewalls, LAN, WAN Intranet, Internet and Load balancers.

PROFESSIONAL EXPERIENCE:

Confidential, Kingsville, TX

Sr. Linux /Unix Engineer

Responsibilities:

• Responsible for effective installation/configuration, operation, and maintenance of systems hardware and software in a Linux/RedHat environment. Improving the stability and performance of the system, maintaining and improving the security posture of the systems, continuous monitoring of system health, and troubleshooting issues that arise.
• Hands of experience in Veritas clustering, Cluster Administration, managing LPARs, and configuring GPFS.
• Veritas File System (3.x/4.x/5.0), VERITAS Cluster (3.x/4.x), VERITAS Volume Manager and Logical Volume Manager
• Done various types of clustering like ACIVE - ACTIVE, ACTIVE-PASSIVE etc.
• Create LPARs based on the app team’s requirement and Increased the memory of LPARs by requesting the memory from SAN team.
• Build the servers from scratch, which include installing RAID, ESXI, and assign IPs, assign Network to Physical machines.
• Assign the IPs to the DNS servers.
• Used various editors like VI, VIM, Pico, and Nano.
• Monitoring and administrating of Red Hat Linux on Enterprise class servers and tuning the servers for better efficiency.
• Performed patching of RHEL using yum, up2date and Blade Logic.
• Hands of experience on various networking Protocols. Done file transfers via FTP.
• Used declarative language, (the Puppet language) to define various configuration items.
• Used puppet for various LINUX ADMIN RESPONSIBILITIES like Managing User accounts & Group Management, creating Files & Directories, for Package Management & Configurations, Managing Services like Logical Volume Management, Task Scheduling for Systems and Backups.
• Doing a UAT refresh to sync the Prod topology in UATs so that app teams can do a rigorous tasting with Prod similar data.
• Monitor various hosts CPU, Memory utilizations, and find the culprits for the issue.
• Configured and administered in Various Veritas volume Manger/Veritas file systems
• Hands of experience on Perl, Shell. Wrote script to check the health of brokers.
• Develop and maintain installation and configuration procedures.
• Contribute to and maintain system standards.
• Contribute to and maintain security posture of the system in accordance with DISA Security Technical Implementation Guides, CTOs and IAVM policies.
• Research and recommend innovative, and where possible, automated approaches for system administration tasks. Identify approaches that leverage resources.
• Install and maintain security patches on the operational and development system, which includes but is not limited to, Red Hat Linux, Windows 2003/2008, JBoss, VMWare, PostGreSQL, and Apache web services.
• Report Security Patch compliance in Online Compliance Report System (OCRS).
• Perform daily system monitoring, verifying the integrity and availability of all hardware, server resources, systems and key processes, reviewing system and application logs, and verifying completion of scheduled jobs such as backups.
• Perform regular security monitoring to identify any possible intrusions. · Perform daily backup operations, ensuring all required file systems and system data are successfully backed up to the appropriate media, recovery tapes or disks are created, and media is recycled and sent off site as necessary.
• Perform regular file archival and purge as necessary.
• Create, change, and delete user accounts per request as necessary.
• Provide Tier III/other support per request from various constituencies. Investigate and troubleshoot issues.
• Repair and recover from hardware or software failures. Coordinate and communicate with impacted constituencies.
• Apply patches and upgrades on a regular basis, and upgrade administrative tools and utilities.
• Configure/add new services as necessary.
• Upgrade and configure system software that supports infrastructure applications or Asset Management applications per project or operational needs.
• Maintain operational, configuration, or other procedures.
• Perform ongoing performance tuning, hardware upgrades, and resource optimization as required. Configure CPU, memory, and disk partitions as required

Confidential, Austin, TX

Sr. Linux /Unix Engineer

Responsibilities:

• Linux/Unix Engineering, Administration, implementation and support on multi platforms like, Redhat 5/6/7, SUSE 9, 10 & 11, Ubuntu 11/12, and Solaris 10, 11, HP-UX 10.x, 11.x
• Experience in creating the company's DevOps strategy in a mix
• Implement and maintain internal systems key to DevOps operations such as database servers, continuous integration, and QA/Test servers
• Part of DevOps Pilot program to test out Jira and Puppet tools for the Release Management services team.
• Utilized automation/build tools Jenkins, Puppet, Chef, Git.
• Having a good experience working on Puppet, Chef, Splunk, BMC patrol, VMware, Vcenter, ESXi host, RHEL 6.5 etc.
• The job duties involving building of 150 virtual and 20 physical servers using configuration management tool puppet.
• Activities include user administration; startup and shutdown scripts; crontab, file system maintenance, backup scripting and automation using Python and Shell scripting (bash, ksh) for Red Hat Linux systems.
• Having a good knowledge in creating various modules with writing manifests/chef-cookbooks in python and ruby.
• Worked on User administration setup, maintaining account, Monitor system performance.
• Creation, Installation and administration of Red Hat Virtual machines in VMware Environment.
• Worked on Windows Azure along with Cloud Engineering team.
• Developed Dev ops background process infrastructure on top of Windows Azure Queues
• Configured hands-free installation using Kickstart and PXE.
• Worked on Virtualization with VMware ESX on different HW like HP Proliant, Dell Power Edge hardware’s using vCenter server.
• Configure RAID mirroring on Linux platform.
• Worked on a build environment.
• Implemented applications licensing scheme using FlexLM and USB Hardware keys.
• Assigning storage luns from the VIO server to VIO clients.
• Involved in Storage management, LVM, File system management, User account management, data backups and user s logon support.
• Maintained and managed Domain Name Service (DNS) for AETC Active Directory (AD) enterprise.
• Involving converged environment with infrastructure including vce-vblock 340
• Implementing solutions for automatic deployment of Linux clients, Point-Of-Sale (POS) systems and clusters for digital media projects.
• Manage and helped establish release management process for the existing Java based e-commerce platform using various tools such as Jenkins, Ant, Maven, and Chef and helped establishing automated build processes.
• Experience with SMIT, LVM, Mirroring, User & System Resource management, Paging Space management, job scheduling.
• Experience in Configuration of multiple logical subsystems utilizing IBM HMC with LPAR configuration, NIM to install and manage LPAR and Virtualization on IBM P5 systems.
• Worked on Nagios Monitoring.
• Adding physical memory to the servers.
• Experience in system Software installation and configuration of NFS shares, Auto-Mounter, DHCP and LDAP.

Confidential

Linux/Unix Systems Engineer

Responsibilities:

• Administration and maintenance of RedHat Linux 6.1.
• Worked on Microsoft Windows 2008, Windows 2003, Windows 2000 and NT Server Environments, Active Directory, DNS, DHCP.
• Infrastructural support comprising of RHEL 6.4, 6, 7, Solaris 10,11 and HPUX.
• Linux Admin and work on network implementation as in TCP/IP DHCP, SIP, NTP, IPV6 and RTCP and TIBCO based implementation
• Worked on VMware ESX4 server, VMware Workstation.
• Upgrading Linux Kernel with the latest releases on RHEL servers.
• Performance tuning and monitoring on Linux, Solaris and HP-UX.
• Help in resolving various issues in the Products of EMS, RV, and Hadoop. And L2 support for those products. and 24/7 Support, weekend support on rotation basis.
• Experience in managing and reviewing Hadoop log files Managing the Data center operations comprising of Production Servers of HP-UX, IBM AIX and Linux.
• Building severs from scratch, installing OS based on App team’s requirement, assigning IP, then to DNS servers.
• Using PL/SQL created various database objects like Tables, Views, Packages, Stored Procedures, Functions, Cursors, and Database Triggers.
• Implement and maintain database security (Create and maintain Users, and Roles and assign Privileges).
• Shell scripting to automate the regular tasks like removing core files, taking backups of important files, file transfers among servers.
• Expertise in virtualization using VMware ESX server 3.5, 4.0, VMware Workstation, Virtual Box and Xen, RedHat Enterprise Virtualization suite.
• Worked on PostgreSQL and MySQL Databases and performed performance tuning and troubleshooting.
• Worked on User administration setup, maintaining account, Monitor system performance.
• Using PL/SQL created various database objects like Tables, Views, Packages, Stored Procedures, Functions, Cursors, and Database Triggers.
• Text processing, also in network programming with Perl Scripting.
• Writing Shell and Perl Scripting for automation of job.
• Setup and administrate HP UNIX journaled filesystem vxfs with LVM.
• Experience working with HP Unix version B. iv1)
• Experience in system Software installation and configuration of NFS shares, Auto-Mounter, DHCP and LDAP.
• Experienced in implementing and maintaining an Apache Tomcat /MySQL, LDAP, LAMP web service environment.
• Created and modified Veritas Cluster Service Groups and managed switchover from node to node and just as importantly, from interstate primary and DR sites
• Manage logical Volume manager on Red hat Servers.
• Scheduled cluster on Grid and installed applications with it.
• Troubleshooting day-to-day server related issues and problems in terms of operating system, applications and network.
• Creation of VMs, cloning and migrations of the VMs on VMware vSphere 5.0.
• Experienced working with MVS (Multiple Virtual Storage).
• Worked with ITIL in Linux to enhance efficiency.
• Worked with software like FEA and CFD to solve complex problems.
• Providing security using the NIST standard security baseline.
• Configure RAID mirroring on Linux platform
• Maintained and monitoring System Activities like CPU, Memory, Disk and Swap space usage to avoid any performance issues.