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Unix/linux Engineer Resume

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Malvern, PA

SUMMARY

  • Ten years of experience in Unix & Linux Administration and application support with proficiency in Solaris 8/9/10 and Red - hat Linux. Also worked on and supported HP-UX, AIX, SUSE Linux, CentOS & Windows (2000, XP, Vista, 2007, 2008).
  • Worked on software package and patch management.
  • Worked in Networking and possess knowledge of TCP/IP, NFS and Open system interconnect model (OSI).
  • Experience in configuring and administrating FTP, NIS, DNS and AutoFS on Solaris and Linux server environment.
  • Experience with shell (bourne and k shell), awk, sed and C programming.
  • Experience in installing Java 2 Enterprise Edition (J2EE) applications Enterprise archive (EAR) using IBM WebSphere Application Server 8.0/6.1/6.0 through admin console and wsadmin utility.
  • Configured JDBC providers, Data sources, Virtual Host, shared libraries, JVM arguments and Classpath updates for IBM WebSphere Application Server.
  • Experienced in the maintenance of the WebSphere Application Servers on different UNIX platforms and setting up the development, SAT testing, UAT and production environments.
  • Experience in problem tracing, log management, scripting to invocate problem-determination actions involving diagnostic traces and thread dumps.
  • Experience in using Service Management Facility (SMF) in Solaris10.
  • Worked on Sun Solaris zones proficient in creating zones and installing applications in separate zones along with maintenance of global and local zones.
  • Well experienced in troubleshooting and Performance tuning using Performance center (v9.5 / v11).
  • Install setup and utilize Jumpstart Server for OS provisioning of Solaris 8, 9 & 10.
  • Installed, configured and implemented RAID 0/1/5 volume management using Solaris Disk Suite (SVM) on Solaris and Veritas Volume Manager (3.5, 4.1, 5.1). Also worked on Veritas file system (3.5, 4.0, 5.0), Veritas Net Backup (5.1, 6.0) and Symantec NetBackup 6.5 for disk management.
  • Performed Back-up, restore and archive operations utilizing Solaris features tar, ufsdump, ufsrestore and Legato Backup.
  • Creating and maintaining user accounts, profiles, security, rights, disk space and process monitoring.
  • Scheduling cronjobs, maintenance, daily ticket resolution, logon spport.
  • Worked on Apache HTTP webserver, Microsoft IIS webserver, tc server and Apache tomcat on various OS platforms.
  • Experience in administration of SUNONE webserver.
  • Administering and configuring BladeLogic and Puppet Configuration Manager tool for deploying business application components.
  • Worked in 24/7 production support environments.

TECHNICAL SKILLS

Operating Systems: Solaris 8, 9&10, Red hat Linux 3.x, 4.1 & 5.2, SUSE Linux,HP-UX, Windows 2000/XP/Vista/2007/2008

Hardware: Sun Ultra Enterprise Servers (E3500, E4500, E450, E420R);Sun Fire (6800/ 4800/ 3800 / v880/ V480/ V240/ V210/ V440/ V280R / 15K); Sun workstations (Ultra 5, 10, 20, Blade, 2000), Oracle X4-2, X4-4

Tape Hardware: Storage tek Tape libraries L40, L80, L180, L700, Sl500, Sl850

Web Application Servers: Apache Tomcat, HTTP, SunONE

Naming Services: DNS, NIS, LDAP

Scripting Languages: Shell scripting (Bash, korn, Bourne)

Databases: SQL server 2003/2008; Oracle 8i/9i/10g/11g

Protocols: TCP/IP, HTTP/HTTPS, SOAP

PROFESSIONAL EXPERIENCE

Confidential, Malvern, PA

Unix/Linux Engineer

Responsibilities:

  • Involved in the Analysis, Design, Development and Production phases of the project.
  • Packaging business application configuration artifacts and deploy them to test regions and provide support in the production deployment.
  • Deployed EAR and WAR files and scripted automated deployment of the applications including JDBC Data source configuration using wsadmin scripts jacl and jython.
  • Assist in the maintenance and support of SAT and CAT testing environment.
  • Involved in creating and managing WebSphere Environmental variables for Data Sources and JDBC Driver paths and other creating shared libraries and s.
  • Monitored performance of CPU, Memory, disks with iostat, vmstat, netstat and tools like TOP, SAR and scheduled jobs using Control-M
  • Used VMware for loading balancing and high availability.
  • Performed installations using Jumpstart and kickstart methodology upon request.
  • Administration and troubleshooting Solaris and Linux servers running business critical application & WebSphere (WAS) applications.
  • Involving in debugging the application problems while developing the application and maintenance, support, configuration and migration of WebSphere applications.
  • Configured WebSphere resources like JDBC providers, JDBC data sources and JNDI bindings.
  • Configured CA siteminder components on both web servers and App servers. Involved in migration of siteminder R6 to R12.
  • Troubleshooting webagent & siteminder logs and monitoring the health of the webserver.
  • Implemented Puppet modules to automate configuration of a broad range of services.
  • Wrote puppet manifests for installing application packages.
  • Created iRule on BIG-IP LTM system to allow application’s JSESSIONID for persistence
  • Created virtual servers for different ports, Backing up and restoring BIGIP utility.
  • Implemented NIS and NFS for administrative and project requirements.
  • Installed FileNetproducts including Content Engine, Application Engine, Workplace XT and Process Engine.
  • Migrated P8 infrastructure from 4.5 to 5.1, also installed the fixpacks and upgrades.
  • Used AWS and Akamai cloud services for loading applications static contents.
  • Configured SUNONE and Apache webservers to handle webserver requests.
  • Deployed WAR and configured application server using tcserver and Apache Tomcat 6.0
  • Configured JVM settings for classpath and tuned performance parameters to enhance the performance.
  • Used Subversion and TFS to get all application services for continuous deployment.
  • Analyze verbose garbage collection trace, heap size, thread pool size, session management to fine-tune the performance of applications.
  • Installed upgrades and fix packs to the runtime environment as required decreasing vulnerability to production environment.
  • Implemented LDAP utilities, setting up DNS lookups.
  • Monitoring system resources, logs, disk usage and scheduling backups using Veritas.

Environment: Solaris 10, Red hat Linux 5.3, SUSE Linux 10.x, CentOS 5/6/7, WebSphere 6.1/8.5, CA siteminder R6/R12, BladeLogic, Puppet, Jenkins, SVN, TFS, Performance Center 9.5/11, SUNONE and http webservers, tc server 2.7.1, Apache tomcat 6.0, Microsoft IIS 7.0, Volume Manager 4.1/5.0, Veritas Net Back-up 6.0, Documentum, FileNet 4.5/5.1, Nagios

Confidential, NY

Linux / Solaris UNIX admin support

Responsibilities:

  • Monitored core business applications CCG, SDBK, DBK, WMDD, CTP, SAPI through different monitoring tools like HP - open view connectivity state monitor any errors noticed responded accordingly, notify management work with respective groups to resolve the issue.
  • Responsible for daily tasks such as user setup and group setup.
  • Initiating back-ups on a daily basis and monitoring the scheduled back-ups using Veritas Net back-up 6.0 and Symantec Netbackup 6.5.
  • Installed and configured SAMBA server for windows and Linux connectivity.
  • Configuring SUDO and granting root permission to users for performing certain activities.
  • Actively involved in monitoring the Tidal job scheduler and fixed the failures.
  • Worked with legato networker tool to backup/retrieve the logs and transfer to FTP server at the request of the development team to further investigate the incident.
  • Responsible for handling the Incident tickets and Change management tickets/request on unix box getting approvals and closure of the tickets.
  • Administering, monitoring and resolving OSI network related problems in development & production environment systems.
  • Generate incident reports, change reports, turnovers, and executive summary.
  • Installed, configured and monitoring Enterprise applications using Puppet.
  • Worked on content routing for application receiving request from webservers / pool members through F5, Configured BIG-IP LTM DNS and NTP settings, Imported keys and s, Created HTTP health monitor, HTTP & TCP profiles.
  • Using SMF enabled/disabled the corresponding application server daemons.
  • Configured DNS master and slave servers in Solaris, configured automount.
  • Performed boot disk mirroring through Veritas Volume manager and Solaris disk suite.
  • Installing NFS boot in server and client configuration.
  • Deployment and troubleshooting of JAR, WAR and EAR files in cluster environment.
  • Develop scripts to monitor JDBC Connection Pool Status, JVM heap size and JVM Messages in the Destination queues in production environment.
  • Configure Wily introscope to monitor WebSphere Application Server.
  • Configured global settings for business applications.
  • Daily administrative tasks include working with developers to troubleshoot issues, working to script and automate administrative tasks.
  • Using Solaris zones created and administered non-global zones.

Environment: Solaris 10, HP-UX, Red hat Linux 3.x,4.x & 5.3, SUSE Linux 10.x, CentOS5.5, Sun Fire 6800, 4800,V890, V480 and V210, Veritas Volume Manager 4.1/5.0, Veritas file system 4.1/5.0, Veritas Cluster Server 4.x, Veritas Net Back-up 6.0/5.0, Legato networker, IHS 8.0/8.5,Tidal,Hp-open view, Service now, Remedy

Confidential, Phoenix, AZ

Linux /Solaris administrator

Responsibilities:

  • Day to day operational support and system administration to production servers.
  • Configured Jumpstart installations, upgrades and troubleshooting of servers remotely.
  • Worked on creating Zones for various applications
  • Trouble shooting and configuring naming services like DNS and NIS.
  • Performed various Diagnostic and system tests periodically. Possess knowledge of TCP/IP protocols and experienced with basic network trouble shooting.
  • Supported backup and recovery operations based on company policy.
  • Regularly scheduled “cron” and “at” jobs to automate system jobs.
  • Maintained maximum uptime and maximum performance capacity for Enterprise Production, QA, and UAT/Staging and Dev servers
  • Familiar with ticket resolution software’s like remedy, service now.
  • Regularly monitored processes and amount of system resources being utilized. This way any unwanted processes can be killed off and important services can be restarted.
  • Creating new file systems, managing and checking data consistency of file systems
  • Managed NFS files system, mounting and unmounting NFS server, NFS client on remote machine, sharing remote file folder, starting and stopping the NFS services.
  • Worked with Legato Networker for Back-up and restore operations.
  • Administering Disks and File systems using Solaris Volume Manager, VERITAS Volume with Veritas File System (VxFS).
  • Trouble shooting of day to day system problems, Clients and user problems.
  • 24X7 Production support.

Environment: Solaris10, 9,8, Veritas Volume manager 3.5/4.0, Red hat Linux 4.3 /5, HP-UX 11.x, Windows 2003, Solstice Disk suite 4.1, Sunfire 880,480R, 280R, Veritas Clustering 4.3, C, Remedy, Servicenow

Confidential, Cleveland, OH

System Administrator (Solaris/AIX)

Responsibilities:

  • Installation and Upgrading and deployment of Sun Solaris Operating System on SUN Enterprise servers.
  • Managing Users/Groups, local and NFS file system needs for the applications using the TCP/IP applications such as Telnet, FTP, and R logins.
  • Configuring Solaris Volume Manager for lower environments.
  • Configuring and troubleshooting Apache server in Solaris.
  • Developing automated script through Ksh, Sed, Awk, and Perl which performs daily source file operations such as formatting, archiving, filtering duplicate, FTP, loading data into Data warehouse and generating daily/monthly status report.
  • Worked with networking protocols like NFS, SMTP and TCP/IP. Also configured and maintained firewalls.
  • Configured and implemented NIS, DNS Master Slave Servers along with required clients.
  • Managing Backups and Recovery using ufsdump, ufsrestore, tar commands and restoring on Tapes.
  • Installation and Configuration of Veritas Volume Manager (Version 4.0) and implementation of RAID’s using Veritas Volume Manager.
  • Created documentation for various system changes, upgrades, configuration changes and other operating system related tasks.
  • Proficient in analytical, problem solving, communication and interpersonal skills, with ability to interact with individuals at all levels.

Environment: Solaris8/9/10, RHEL4.0, HP-UX-10.x, Windows2000, SUNFIRE 3800/ 4800/6800 , E 6500/4500/450/250 and Ultra machines, NFS, NIS, DNS, Shell Scripts, VxVm VxFs 3.x, NetBackup 4.5.

Confidential

Jr. System Administrator

Responsibilities:

  • Monitor the usage of cpu, load on cpu, checking the load on memory and various security aspects of the systems configuring the network printers.
  • Created New Slices, New File Systems, Mounting File Systems, Unmounting File Systems and Huge Slices using Daisy Chains.
  • Used commands for creating new users, groups, user passwords, changing passwords, managing user accounts and locking users.
  • Scheduling cronjobs for weekly back up and involved in installing the necessary packages for back up requirement.
  • Configuring the Legato backups in different servers (Solaris, and Linux).
  • Making sure the user’s requirements are fulfilled. Providing them memory spaces, monitoring the applications are working fine.
  • Extensively worked in data and database migration from older machine to latest configurations.
  • Building the new process/steps for the changes and supervising the process adherence.
  • Shell scripting for all kind of users to monitor/execute all the daemons and services related to the applications.
  • Managing the fiber LAN cables, switches to make sure the storage devices connected with servers are not messed up to others.
  • Installation of patches, fix packs and other software packages.
  • Worked on Ticketing system for problem reporting, resolving escalating problems including performance issue and break fix.
  • Solving the daily Turnover queue cases like moving the services from staging to production, services migration from one server to another, modifying and updating the automated scripts, testing the modifications and verifying successfully startup of the services at the client side.
  • Configuring the FTP, Telnet, rlogins across the servers in different domain.
  • Providing the onsite maintenance to the servers in different geographical locations.
  • Trouble shooting of day to day system problems, Clients and user problems.

Environnent: AIX 4.3/2.3, Solaris 8,7, Linux, Windows NT, Sun Enterprise 4500/ 6500/ 450/420 R/250 Servers, C, Shell Scripting.

Confidential

Solaris Administrator

Responsibilities:

  • Installation and customization of Sun Solaris and Windows NT servers.
  • Patch installation and regular maintenance.
  • Supporting 150 Servers for multi locations.
  • Oracle installation & system level support to clients.
  • Amendment of existing scripts as well as writing new Bourne and Korn scripts related to repeated systems administration tasks.
  • Troubleshooting and resolving of problems related to hardware, operating systems, third party applications and scripts
  • Troubleshooting of Servers.
  • Backup Schedules for Solaris and Windows Servers using DLT Tape drives.
  • DNS, NFS, NIS administration.
  • Installation, Configuration of Web Servers using Apache
  • Installation and configuration of Windows NT4.0, MS Back Office Products
  • Network Solutions to various clients using Windows NT.
  • Configuring Windows 95, 98 and NT workstations in NT domains.

Environment: Sun Solaris 2.9, Sun E450, E250, Sparc stations 20, Switches, Hubs, DAT & DLT Tape Drivers, Windows NT 4.0, 98, Apache, Oracle 8i, MS Office suite.

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