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Senior Linux Administrator Resume

Boston, MA

SUMMARY

  • Accomplished Linux/ UNIX administrator and DevOps Engineer with 10+years of experience managing server infrastructures and data - centre operations across multiple platforms (UNIX, Linux, and Windows). Effectively plan, install, configure and optimize the IT infrastructure to consistently achieve high availability and performance.
  • Experienced with Red Hat Enterprise Linux 7.0/7.1/7.8/7.9/8.3 , Windows 2012/2016/2019 . VMWare vSphere, ESXi 5.0/6.0/7.0/7.0 b/7.0 GA, UNIX®.
  • Experience in professional system support and solution-based IT services for Linux OS (RHEL,Ubuntu,and CentOS), Confidential Web ServicesandOpenStack
  • Experience onSolaris 10/9/8/7andRHEL 4/5/6 implementationAdministration, Installation & Maintenance.
  • Upgrade and Maintain Firmware onIBM p5/p6 Servers, HMC, Sun Sparc Servers.
  • Experience in Integration of various network related services likeNFS, NIS, DNS, FPT and Samba Server.
  • Installation and configuration ofApache/Web logic on Solaris, Linux and Windows.
  • Enterprise Server administration ofSun SolarisandLinuxInstallations includingSun Fire series.
  • Experienced in the setup and administration ofVERITASVolume Manager and Clusters.
  • ConfiguredKickstartservers for complete hands-free installation of workstations, with custom profiles, begin/finish scripts and custom package suites/clusters.
  • Experienced in Troubleshooting skills with network protocols such asDNS, TCP/IP, SMTP & SNMP.
  • Hands on experience with ticketing tools such asRemedy, BMC service desk expressandQuick base.
  • Administration of networking devices such asRoutersandswitches.
  • Experience in writing basicShell scriptsusingksh, bash, perl,for process automation of databases, applications, backup and scheduling.
  • Strong technical background inStorage, Disk Management, Logical Volume Management (LVM)and logical partitioning.
  • Extensive knowledge on automation for deployment/configuration of different application servers likeWebSphere, WebLogic, JBoss;Web Servers likeApache Tomcat andWeb containers likeNginx etc.
  • Experienced in infrastructure team on installation, configuration and administration ofCentOS 5.x/6.x/7, RHEL 5.x/6.x/7,Red Hat Satellite 6,Windows ServerandSUSE Linux 10.x/11.
  • Experience in Package Management usingRed Hat RPM/YUMandRed Hat Satellite serverandLinux.
  • Experience in Package management like Install, remove and update and querying packages usingRPMtool.
  • Experience in Troubleshooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine-tuning onUNIX Red Hat Linux Systems.
  • Installation and upgrade of Packages and Patches configurationmgmt.,version control,service pack& reviewing connectivity issue regarding security problem.
  • Experience in Installing Firmware Upgrades,kernel patches, systems configuration onUnix/Linuxsystems.
  • Experience in ConfiguringKick start serversto installRed Hat LinuxandVMWare ESXon multiple machines.
  • Installed, configured and administered Continuous Integration tools such asDockerandPuppetfor automated builds.
  • IntegratedSVNintoAnsible/Jenkinsto automate the code check-out process.
  • Experienced in Automating, Configuring and deploying instances onAWS,AzureandRack space cloudenvironments andData centres, also familiar withEC2,Cloud watch,Elastic Searchand managing security groups onAWS.
  • Designed, wrote and built deployment using Ant/ Shell scripting and automate overall process using Subversion and Ansible.
  • Experienced in creating modules, manifests inPuppetusingRubyand automated various administrative tasks by creating modules and manifests on multiple servers usingPuppet.
  • Designed and created multiple deployment strategies using Continuous Integration and Continuous DeploymentPipelinesusingJenkinsandBamboo.
  • Experience in deploying application usingJenkins’sserver and Troubleshoot build and release job failures, resolve, work with engineers on resolution.
  • Experienced in Automating the application deployment inside the software container usingDocker.
  • Experienced in Switching tasks include VTP, ISL/ 802.1q, IP sec and, VLANs, Ether Channel, Trunking, GRE Tunneling, Port Security, STP and RSTP.
  • Proficiency in configuring the VLAN setup on various Cisco Switches.
  • Developed, documented, and automated reusable build and release processes forJ2EEandWeb Methodsapplications usingAnt,Mavenand deployed intoApache Tomcatserver onLinuxenvironment.
  • Extensive experience in installation, configuration and administration of Subversion (SVN),GIT,UCM Clear CaseandTFS.
  • IntegratedJIRAin withSVNand dealing with its administration in change management process.
  • Experience with Intel Core i9/i7/i5, HP, IBM & Dell hardware like rack-mounted servers, tower servers, desktop, laptop and other peripherals.

TECHNICAL SKILLS

Operating Systems: Windows 2007/2008/2009/2010/ 2012/2016/2019 , Vista/XP, Unix/Linux (installation), RHEL 7.0,7.1,7.2,7.5,7.9,8.3, HPUX 10.20, 11.00 Windows95/98/ME/XP/Vista/Windows10, V-Hyper

VMware Tools: ESX/ESXi 7.0/7.0 b/7.0 GA Server VSphere, VMware converter 4/3 and VMware VMotion

DevOps Tools: Chef, Ansible(advanced), Jenkins (Advanced), Docker (Intermediate), Kubernetes, Puppet, Gradle, Git, Jira, Ant

Database: MS SQL Server (installation), and MS Access

Storage & Backup Software: Symantec backup exec, Vizioncore VRanger Pro, and VMware, NetApp, Hitachi Data Systems, VERITAS Net Backup Cluster Manager (VCM), Volume Manager (VVM) and HP Data Protector

Database Server: Solaris 10/11.4 and Red Hat Linux 7.9/8.3 and Win 2012/2016/2019

Directory Services: Microsoft Active Directory

Networking Protocols: TCP/IP, SMTP, DNS, DHCP, ICMP, FTP, TELNET, SSH, UDP, RIP, OSPFLanguages Linux, Shell Scripting, Perl, Python, Bash

Virtualization Tools: VMware, Virtual box

Cloud Platforms: AWS, Azure, VMware ESXi, Open Stack, AIX.

PROFESSIONAL EXPERIENCE

Senior Linux Administrator

Confidentia, BOSTON, MA

Responsibilities:

  • Worked on installing, upgrading and configuring RedHat Linux 7.x,8.x, Solaris, Windows
  • Managed Physical and cloud infrastructure running Red hat Linux, Solaris on AWS Cloud and X86, SPARC Hardware knowledge on automation for deployment/configuration of different application servers likeWebSphere, WebLogic, JBoss;Web Servers likeApache Tomcat andWeb containers likeNginx etc. worked for automating build and monitoring tasks across AWS and Rackspace using a variety of tools such as Mongo DB, NginX, Jenkins, and JIRA.
  • Worked with Apache, HTTP, NginX Server including proxy and caching configurations. configuration & troubleshooting of applications including NginX, Kafka, HAproxy, etc
  • Managed Physical and cloud infrastructure running Red hat Linux
  • Performed Troubleshooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine-tuning onUNIX Red Hat Linux Systems.
  • Worked with DBAs on installation ofOracle database, RDBMS database, restoration and log generation. Perform security patching of Linux servers
  • Installed, configured and administrated of AIX 4.3/5.1/5.2/5.3/6.1 , OEL 4/5.x and SUSE Linux 10.x/11 and day-to-day system admin tasks.
  • Worked on Configuring Audits Reports.
  • Worked in Kickstart, Jumpstart and NIM installation methods for RHEL and IBM-AIX
  • Worked in container-based technologies likeDocker,KubernetesandOpenShift.
  • IntegratedDockercontainer orchestration framework using Kubernetes by creating pods,config Maps, deployments.
  • Implement cluster services usingDockerandKubernetes.
  • Developed Dev/Test/Prod environments of different applications onAWSby provisioningKubernetes clustersonEC2instances usingDocker,Bash, Chef, and Terraform.
  • Administer, secure, and maintain multipleKubernetes clustersto support a global service.
  • Worked on various IaaS platforms like AWS, Azure and VMWare.
  • Implemented of oracle RAC 10g on HPUX blades and Itanium servers with Red hat Linux RHEL along with SAN storage on EVAs.
  • Troubleshooted Apache issues such as performance testing and tuning i.e., worker, pre-fork, mpm configuration, failure of Apache to restart, queuing of requests, etc.
  • Worked on GIT to maintain source code in Git and GitHub repositories
  • Performed building, deploying web applications in a UNIX, including exposure to Infrastructure (especially BEA Web Logic, Tomcat and WebSphere).
  • Performed on tuning and preventive maintenance. Performed daily backup.
  • Performed addition of Swap space Confidential run time. Performed installation and configuration of LDAP.
  • Performed ResolvingTCP/IPnetwork access problems for the clients.
  • Configured and maintained NIS, NFS servers on Linux.
  • Worked in Setting in Linux/Unix environment.
  • Designed, Built, Configured and Troubleshot, Linux (Red hat Enterprise), Unix.

Environment: Red Hat Enterprise Linux 7.0/7.1/7.8/7.9/8.3 , Windows 2012/2016/2019 , Ansible 2.5, VMWare vSphere, ESXi 5.0/6.0/7.0/7.0 b/7.0 GA VMware vSphere3.5/4.1/5, VMware infrastructure 3.5/4/5, VMware LabManager4, VCenter Server, VCenter Update Manager, SRM 4.0, vCenter HP/Dell servers, HP blade servers, Cisco Nexus 1000v Windows server 2016/2019, VMware VxVM, VxFS and VCS

LINUX Administrator

Confidential, IL

Responsibilities:

  • Installed, configured, maintained, Administrated, and support ofSolaris/Redhat/SUSEon Dell and HP hardware.
  • Maintained network and data security, maintained security compliance policies on the OS for SOXand internal audits.
  • Installed, maintained and finetuned the Apache-Tomcat serevand WedsphereApplication Server in Linux Platform.
  • Designed, implemented and maintained cloud orchestration for end user of VMs (desirable).
  • Worked with internal Business Units and Field Services to run servers, make changes on servers/systems, resolve issues to find a solution to a business problem, determined cost for solutions, partner to deliver services.
  • Worked with other operation support teams to improve process flow.
  • Worked closely with the vendors to make sure solutions are implemented correctly.
  • Worked on Web Application (NodeJS, Apache, IIS, Nginx) including installation, administration, configuration, troubleshooting, performance tuning, preventative maintenance, capacity planning, monitoring, and security procedures.
  • Decommissioning of the old servers and keeping track or decommissioned and new servers using inventory list.
  • Participated in on-call rotation to provide 24X7 technical supports.
  • Configuration and troubleshooting - LAN and TCP/IP issues.
  • Configured and maintained NIS, NFS servers on Linux.
  • Setting in Linux/Unix environment.
  • Designed, Built, Configured and Troubleshot, Linux (Redhat Enterprise), Unix.

Environment: Windows 2010/NT, SSH Gate, Sun E450, E250.Red Hat Enterprise Linux 4.x,5.x, MS Windows 2012/2016 server, TCP/IP, NIS, NFS servers on Linux, LDAP, DHCP, DNS, LAN, uWSGI.

LINUX ADMINISTRATOR

Confidential, Ny

Responsibilities:

  • Worked on Integration of UNIX and LINUX with Active Directory using Centrify Tool Provided 24x7 on call Support for Production Environments
  • Designed multi rollout scenarios to meet corporate schedules.
  • Monitoring connections and load of Apache server using mod status.
  • Create LAMP based game metrics web application for real-time viewing of user activity.
  • Ran Operational Readiness Testing for Incident, Problem, Change, Service Catalog, Knowledge Management
  • Troubleshoot customer applications issue.
  • Software package and patch administration, involving adding and removing software packages and updating patches.
  • Worked onRHEL systems, HP-UX machines, management & archiving.
  • Migration of PHP and Ruby applications to a LAMP platform using RVM
  • Troubleshooted OS issue using system message logs.
  • Troubleshooted Neustar Numeri Track, Order Path, Number Manger applications issue with customer.
  • Troubleshooted Web Services API, Apache Tomcat, and Cobra issues
  • Created an FTP web interface to manage and send files to our customer FTP site using PHP.
  • Write SQL query, insert, and update scripts for the FTP web interface.

Environment: Red Hat Linux 3/4, KVM, Acronis, Solaris 8, Sun Enterprise Servers, SUN FIRE 6800/E6500/E4500, Sun Sparc1000, IBM RS/6000, Disk Suite, Veritas Volume Manager 4.0, LDAP, DNS, NIS, NIS, SNMP, Shell scripting, SENDMAIL, Apache, Puppet, WebSphere, Sun and Veritas Clusters

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