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Applications Developer Resume

SUMMARY

  • A Red Hat Linux and Sun Solaris Certified system Administrator, with 8 years of experience as UNIX Administration in Red Hat - Linux 5 and Solaris 8 plus knowledge in computer hardware and I/O devices.
  • Proficient in working on Solaris 10 on Sun M5000/T4000, T5200/T2000, Sun V490, E2900, Fire 6900/6800, Sun Fire 25K/15K/12K & all other Sun servers.
  • Expertise in administration of Sun Solaris and building high end Sun Servers for production environment. Building Sun servers with Solaris 10, Jumpstart.
  • Strong experience in System Administration, Installation, Upgrading, Patches, Migration, Configuration, Troubleshooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine-tuning on UNIX (SUN Solaris, Red Hat Linux)Systems.
  • Experience in Zone Creation on Solaris 10. Configured and Installed Solaris zones (containers) using utilities Zonecfg, Zoneadm etc and also worked on the creating branded zones (creating solaris 8/9 on a Solaris 10 server).
  • Experienced in maintaining file systems and creating ZFS.
  • Involved in complete Administration tasks on UNIX (SUN Solaris, Red Hat Linux) and documentation for the projects executed.
  • Installed, monitored and supported Web and Application Servers on Solaris and Linux environments.
  • Good knowledge on operating systems architectures.
  • Strong technical background in Storage, Disk Management, Logical Volume Management (LVM) and logical partitioning.
  • Experience in Creating new file systems, mounting file systems and un mounting file systems, Hands on experience in Tivoli Storage Manager (TSM), Disk Suite (SVM).
  • Experience in installing the VERITAS, installing and configuring the Veritas cluster server (VCS), using the VERITAS storage administration (VERITAS volume manager, VERITAS file systems) for the SAN configuration.
  • Experience in Hitachi SAN Storage administration using Meta, VxVM.
  • Experience in installation and configuration of WebSphere, Apache, I Planet, BEA Weblogic, LDAP, and mail servers.
  • Proficient in performing DR tests of UNIX (Solaris & Linux), Oracle & Sybase databases, Peoplesoft/SAP, FOBOCA, Securities and Trading Apps and whole UNIX infrastructure. R1/R2 mappings, DNS/LAM changes.
  • Creating and maintaining users, profiles, security, rights, disk space and process monitoring.
  • Setup and configured network TCP/IP on SOLARIS including RPC connectivity for NFS. Created mount points for Server directories, and mounted these directories on Solaris Servers.
  • Proficient in configuring JumpStart and Kick Start servers to initiate installation of Solaris and Red Hat Linux on several machines at once.
  • Experience using diagnostic and debugging tools such as Dtrace, Strace, truss and Top.
  • Worked on group/user administration, startup and shutdown scripts, crontabs, file system maintenance and backup scripting and automation.
  • Highly experienced with Storage Administration like EMC SAN Administration, NetApp, NAS Administration, VERITAS NetBackup and Legato.
  • Experience working with Storage Area Network (SAN), EMC CLARiiON, EMC Symmetrix DMX, Oracle VMware (OVM).
  • Experience in writing Shell scripts using ksh, bash, perl, for process automation of databases, applications, backup and scheduling.
  • Experience in Performance monitoring, usage and load of the system, changing kernel parameters for better performance, creating new Slices with format and creating huge Slices with Daisy Chains.
  • Expert in setting up SSH, SCP, SFTP connectivity between UNIX hosts.
  • Experienced in DNS, NIS, NFS, CIFS, FTP, NIS, Samba Server, LDAP, remote access, security management, and system troubleshooting skills.
  • Experience on upgrades of Solaris, Sun Hardware, patches, VERITAS S/W. Disaster recovery, VERITAS NetBackup, Watchers and also Oracle & third party software.
  • Build and configure complex clustered environments using Solaris 10, Sun Cluster and Veritas Cluster with shared storage configured from Netapp arrays. Measure and analyze host and storage behavior during injected faults.
  • Proficient in System Backup and Recovery from tapes using ufsdump, ufsrestore, tar and cpio.
  • Experience administering two AIX HACMP clusters running AIX 4.3, and 5.2 in a SAN environment with an EMC Symmetric and an IBM ESS 2105.
  • Performance Monitoring & Tuning - iostat, vmstat & netstat, nfsstat.
  • Experience configuring Firewall and security using SSL, IPchains, IPtables, TCP Wrappers, Tripwire, and port scanners.
  • Security compliance on the OS for SOX and internal audits.
  • Experience in performing DBA tasks such as creating users, roles, tables, table spaces, imports and exports for development of databases.
  • Excellent client relation skills and the drive to complete tasks effectively, and efficiently where customer services and technical skills are demanded.
  • Ability to communicate effectively with all levels of management, and the client community.
  • Provided production support in an on-call rotation in a 24x7 environment.

TECHNICAL SKILLS

Operating Systems: Red Hat Linux 4.x, 5.x, Solaris 8/9/10, AIX 4.x, 5.1, 5.2, 5.3, Windows 2000/2003 Server. Windows NT4.0, Windows 98/2000/XP.

Hardware: Sun Servers (E4500, E3500 and E450), IBM RS/6000, p520, p550, p570, p590, p595, p670, p690, Ethernet hubs, and switches.

Tools: Sun Cluster 3.2, VERITAS Netback up 6.0, Admin Tool, Ufsdump, VERITAS Storage Foundation Suite, Solaris Volume Manager, File manager, send mail.

Languages: C, C++, SQL, and HTML.

Databases: Oracle 8i/9i/10g,SQL Server 2005/2000,MS-Access,MySQL

Networking: FTP, SFTP, FTPS, HTTP, HTTPS, TCP/IP, NIS, NFS, DNS, ALE, and BAPI.

Scripts: Perl, Korn, Bash Shell.

Storage and Backup: Tivoli Storage Manager, VERITAS Net Backup.

Web and Application: Web Logic Server 8.1, WebSphere Application Server 5.0.

PROFESSIONAL EXPERIENCE

Confidential

Applications Developer

Responsibilities:

  • Application Developer and System Administrator role in different platforms like: the new RHEL 5 and old Solaris 5.x, and Mainframe AIX.
  • Installed Red hat Linux image server, on a physical server which in turn will host a virtual server RHEL version 5.5. This was done separately for Development, QA, and Production server.
  • Installed different software tools/software such as Open SSL, SFTP, FTP-TLS, ESP agent, SMTP, TSM Client, PGP, etc. integrated it with several user accounts in a Jailed environment.
  • Import and Deport disks into a disk group depending on the requirement using the vxassist utility on the VERITAS Volume Manager.
  • Managed the User and Application Account creations and deletions for the SUN Solaris and Red hat Linux Servers.
  • Created disk groups, initialized physical disks, created sub disks, plexes, volumes to create a VERITAS File System (VxFS).
  • Created mount points for Server directories, and mounted directories on the Servers.
  • Maintaining network and data security and, Setting up SSH and SCP features between SUN systems and other Red hat Linux hosts.
  • Managed shared NFS files system, mounting and un-mounting NFS server, NFS client on remote machine, sharing remote file folder, starting and stopping the NFS services.
  • Installed patches and Packages as needed. Installed and configured new hard drives and memory.
  • Troubleshooting and analysis of hardware and software failures for various UNIX servers (core dump and script log file, ESP Logs analysis).
  • Performed Performance Monitoring & Tuning - iostat, vmstat & netstat, nfsstat.
  • Developed Korn shell scripts and Perl Shell scripts for several applications like File Transfers, customizing user environment, performance monitoring and Responsible for cron job management/ESP Scheduling and Performed disaster recovery management procedures.
  • Managed file permissions & ownership for important directories & files.
  • Administration responsibilities include user, group, disk, and security management, File sharing Permissions.
  • Performed Installation, Scripting, Upgrading, Patches, Migration, Configuration, Troubleshooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine-tuning on UNIX (SUN Solaris, Red Hat Linux) Systems.
  • Major Perl and Korn shell script development experience in the Migration project (Old Sun Solaris to new Red Hat Linux).

Technical writing: Wrote several Documents such as Operational overview Document, System Build Guides, Application Build Guides, ESP Requirement forms, Production implementation checklists.

Leadership: Led conference meetings, direct communication with the client regarding project requirement, access management, project development status reporting, hassle management, relations with vendor server support team.

Environment: Sun Solaris 5.x, Red Hat Linux 5.x, Mainframe AIX., ESP Scheduler, PGP, SFTP and FTP-TLS secure File transfer, SMTP, NFS share, Perl Scripting, Korn shell Scripting, Technical writing.

Confidential, Chicago, IL

Solaris/UNIX Administrator

Responsibilities:

  • System Administrator role in a large team responsible for maintaining of different Unix operating systems such as RHEL 3/4/5, Solaris 8/9/10, AIX 5.1/5.3, Windows servers.
  • Installed different VMware products such as VMware server 2.0, ESX 3.5/4.0 on a physical server which in turn will host different virtual servers running different RHEL versions, Solaris, Open Solaris etc. and windows servers.
  • Installed different Oracle products such as Oracle BPM, integrated it with Oracle Weblogic server 10.3, Oracle DB 11g and Sun One LDAP 6.1 to allow developers to work on it.
  • Installed AIX as LPAR on an IBM P series servers maintained by using HMC set up on a SUSE server.
  • Import and Deport disks into a disk group depend ending on the requirement using the vxassist utility on the VERITAS Volume Manager.
  • Managed the User and Application Account creations and deletions for the SUN Servers. This includes setting up SUDO access for DBA and application account access.
  • Created disk groups, initialized physical disks, created sub disks, plexes, volumes to create a VERITAS File System (VxFS).
  • Created mount points for Server directories, and mounted directories on the Servers.
  • Maintaining network and data security and, Setting up SSH and SCP features between SUN systems and other UNIX hosts.
  • Managed shared NFS files system, mounting and un-mounting NFS server, NFS client on remote machine, sharing remote file folder, starting and stopping the NFS services.
  • Installed patches and Packages as needed. Installed and configured new hard drives and memory.
  • Troubleshooting and analysis of hardware and software failures for various UNIX servers (core dump and log file analysis).
  • Performed Performance Monitoring & Tuning - iostat, vmstat & netstat, nfsstat.
  • Experience in working with Clear Case CLI commands such as clear tool and clear make in both single command mode and interactive mode.
  • Experience in working with cleartool to display event record, by including the comment strings such as lshistory, lscheckout, lstype etc.
  • Performed patching, backups on multiple environments of Solaris and Linux.
  • Installed and configured Web Sphere, Apache, I Planet, BEA Weblogic.
  • Developed Korn shell scripts for admin tasks like customizing user environment, performance monitoring and Responsible for cron job management and Performed disaster recovery management procedures.
  • Managed file permissions & ownership for important directories & files.
  • Administration responsibilities include user, group, disk, and security management, File sharing Permissions.
  • Installed and Configured Apache Web Server. Taking ufsdump for swap gear preparation on the other site for migration
  • Performed Installation and Administration of BEA Weblogic 8.1/9.2/10.3
  • Installed products like tibco. Responsible for installation, configuration and support of Weblogic 10.3/9.2/8.1 on Sun Solaris 10 Servers.
  • Performed administration of Sun Solaris and building high end Sun Servers for production environment. Builded Sun servers with Solaris 10, Jumpstart.
  • Performed Installation, Upgrading, Patches, Migration, Configured, Troubleshooting, Security, Backup, Disaster Recovery, Performance Monitoring and Fine-tuning on UNIX (SUN Solaris 10, Red Hat Linux) Systems.
  • Experience in writing monitoring/start up shell scripts for Unix and batch scripts for windows
  • Performed Zone Creation on Solaris 10. Configured and Installed Solaris zones (containers) using utilities Zonecfg, Zoneadm etc and also worked on the creating branded zones (creating Solaris 8/9 on a Solaris 10 server).
  • Experienced in maintaining file systems and creating ZFS.
  • Experience in implementing and maintaining the IBM Net Cool suite in a complex enterprise environment
  • Performed design and have a development experience in Perl and Unix shell scripting

Environment: Sun Solaris 5.x, Red Hat Linux 5.x, IBM Net Cool Suite., Oracle BPM, BEA Weblogic, VMware server SMTP, NFS share, Perl Scripting, Korn shell Scripting, VERITAS.

Confidential

Solaris/UNIX Administrator

Responsibilities:

  • Installed and configured hardware and OS on Servers, Workstations and I/O devices on Sun hardware.
  • Monitor, troubleshoot and administer of SUN Servers, Linux and HP-UX.
  • Performed Jumpstart Installation of Solaris servers for different OS levels (9/10) for different architectures (V- series, M series, T series).
  • Worked in a fast-paced 24x7 production environment comprising Sun, IBM .
  • Installed configured, managed the ACL’s around the CVS, S ubversion (SVN) repository and also responsible for back-up recovery of the repository.
  • Installation of OAS (Oracle Application Server) on Solaris 9 and its configuration with oracle database.
  • Restore of Oracle instance and worked with Oracle team for Oracle installation and Building Oracle Cluster.
  • Installed patches and software as needed. Installed and configured new hard drives and memory.
  • Created disk groups, volumes, volume groups and RAIDs using VERITAS Volume Manager and worked on Tivoli Storage Manager (TSM), VERITAS DMP, Solstice Disk Suite (SVM).
  • Involved in disk configuration and disk crash recovery using format and fdisk. Performed fsck on the file systems and bad super blocks were repaired using repair and analyze.
  • Created new slices, mounted new file systems and uncounted file systems.
  • Created and Maintained ZFS.
  • Upgraded Solaris 9 to Solaris 10 and worked with Solaris zones/containers, Used Solaris Cluster to deploy two-node cluster.
  • Installed the packages using Enterprise Installation Standards (EIS).
  • Performed patching, backups on multiple environments of Solaris, Linux and VMware.
  • Installed and configured packages, patches on Windows (2k &2003) environments.
  • Implemented anti-spam technology based on open source applications on Linux servers.
  • Created and Managed Meta devices using Solstice Disk suite and Volume Manager.
  • Configured backup/archive policies using Tivoli Storage Manager backup utility, and mksysb images of root volume group to meet data archiving requirements, and disaster recovery readiness.
  • Installed and Configured Sun ONE Webserver.
  • Responsible for monitoring system performance and health by using a tool Big Brother or Xymon .
  • Responsible for DNS and Configured DNS Servers and Clients, troubleshooting system and DNS issues.
  • Configured BIND9 DNS Server to serve an internal network and an external network at the same time with different set of information on Solaris servers.
  • Troubleshooting and analysis of hardware and software failures for various UNIX servers (core dump and log file analysis).
  • Involved in maintaining high availability clustering environment using HACMP Cluster software.
  • Configured and administered TCP/IP, LPAR / DLPAR , NFS and VIO servers and Worked with LDAP in order to resolve user management issues.
  • Developed scripts for automating administration tasks like customizing user environment, and performance monitoring and tuning with nfsstat, netstat, iostat, vmstat.
  • Created Korn shell scripts to monitor system resources and system maintenance and Performed administrative tasks such as System start-up/shutdown, and Backup strategy and scheduled cron jobs for job automation.
  • Installed and deployed Weblogic and Websphere Application Servers (WAS).
  • Created disk groups, initialized physical disks, cachreated sub disks, plexes, volumes to create a VERITAS File System (VxFS).
  • Import and Deport disks into a disk group depend ending on the requirement using the vxassist utility on the VERITAS Volume Manager.
  • Used VERITAS Netback up tool for Backup and recovery, Developed and executed test plans for VERITAS Cluster with Netapp SAN.
  • Worked on tripwire, F5 networks in order to develop an effective way to direct traffic running on app servers using the BIG IP application traffic management device.
  • Configured LUNs (HDS) using VERITAS Volume Manager.
  • Experience in performing RAC, deploy, and support using Oracle RAC on Solaris 9/10.
  • Provided support for multi-path Fiber Channel storage systems, as well as Solaris servers configured with multiple Fiber Channel (FC) Host Bus Adapters (HBA) on a Storage Area Network (SAN).
  • Experience in working with Clear Case CLI commands such as clear tool and clear make in both single command mode and interactive mode.
  • Experience in working with cleartool to display event record, by including the comment strings such as history, l scheckout, lstype etc.
  • Installed and configured domain wide mail systems utilizing Postfix with multi subnet and a single relay host for internal mail forwarding, all external mails were handled by Send mail and SMTP.
  • Attended team meetings, change control meetings to update installation progress, and for upcoming changes in environment.
  • Provided 24x7support on shift rotation basis.

Environment: Sun Solaris 10/9, Windows NT 4.0,Websphere, Weblogic, Windows NT 4.0, VERITAS Volume Manager 5.0, VERITAS Net backup 6.0, Sun Enterprise 4500, Sun Enterprise 450/420R/250, Sun Ultra 250 with RAID, Pentium PCs, Oracle 10g, HACMP, SAN, NIM, NFS, VIO Servers.

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