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Senior Linux Systems Administrator Resume

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Rockville, MD

SUMMARY:

IT career in line with Unix Systems/Network Administration (Planning, Installation/Deployment, Maintenance/Management, Performance Tuning of UNIX Systems and Network), UNIX Systems Architect, Programming, Systems Analysis or E - Commerce.

TECHNICAL SKILLS:

HARDWARES HANDLED: Sun T Series (T2000, T5240, T5440); Sun Ultra Servers (12K/15K, 20K/25K, V6900, V4900, V2900, V880, V490, V480, V240, E450, E420R, E6500, E10000, Sunblade 100), Sun SPARCstation 1+/2/4/5/10/20, Sun SPARCserver 0 / 0 /, ICL DRS6000 Series; Fujitsu A-Series; FACOM K-Series; Confidential System 370; Fujitsu M-760/6; PC’s, Confidential p Series (550, 570,575),Confidential RS/6000, NCR 34xx, DEC 2000 Model 300 AXP; Sun StorEdge T3, 3510, 6320, SGI TP9500

SOFTWARE SKILLS:

Programming: UNIX Shell (C,Bourne,Bash and Korn), Forms Menu Language Interpreter (FMLI), awk, sed, Unix C - UNIX Network (TCP, X25, and OSI) using STREAMS, sockets and TLI, UNIX C - Threads Programming, MF COBOL 3.x/4.0, PASCAL, INFORMIX SQL & 4GL, ACCELL SQL & 4GL, PROGRESS Fast Track, PL/1, SAS, BASIC, FOXBASE+, CLIPPER, SYBASE SQL, FUJITSU A-Series RDBM, Tcl/Tk, PreVue Language, PERL, HTML, Java

Networking: Managed and administered the following network protocols - TCP/IP, NetBeui, OSI, X.25, SNA, NFS, NIS, NIS+, DNS, LDAP, HTTP, HTTPS, SSH, Confidential

Operating Systems: Administered and managed Solaris 2.x aka Solaris 8/9/10, SunOS 4.1.x aka Solaris 1, DRS/NX, SX/AR, LINUX (Ubuntu, OpenSuse, RedHat/CentOS), NCR UNIX and SCO OpenServer 5.0.4, SCO UnixWare 2.1.3/7.0.1 , OSF/1, AIX, MS-DOS ver 3.x/4.x/5.x/6.x; Windows 95/98/NT 4.x/2k/XP; Novell Netware OS; CSP/F5 for FACOM K-Series.

Packages & Utilities Handled:

Virtualization: VMWare ESX/Server/Workstation; XEN; qemu; Sun Virtual Box; Sun LDOM 1.x/2.x; Sun Containers/Zones, AWS Cloud

Filesystems/Volume Manager: Solaris (UFS, ZFS, QFS, SAMFS; LustreFS); Linux (lvm2, ext2, ext3,ext4, reiserfs, gfs,xfs); Windows (ntfs, fat16, fat32); Veritas Volume Manage and Veritas Filesystem; GlusterFS

UNIX Software: OfficePower, TMON for UNIX/Probe/X, Purify, Hindsight, StarOffice, NetWorker for Solaris/Backup Copilot, Sun Online DiskSuite, Veritas Volume Manager for Solaris (VxVM), Veritas File System (VXFS), Veritas Cluster Suite (VCS), Sun SAMFS/QFS, SunLink SNA 3270, SunNet X.25, SunNet Manager, SunLink SNA Peer-to-Peer, SunNet OSI, Sun SPARCStorage Array, TRACER (for Optical Disk Jukebox), SCO Vision97

Relational Database Software: MySQL, PostgreSQL, Oracle (8i,9i,10g,11g), Informix (SQL, 4GL, SE-Admin, Online 7.0.2), PROGRESS, Fujitsu RDB, XBase (Dbase III+, FoxBase)

E-Commerce Software: BEA WebLogic Server 5.1/6.0, BEA WebLogic Enterprise 5.0/6.0, BEA WebLogic Commerce Server 2.x (Portal), SiteMinder 4.0 (Portal Security Management); Apache Server; Tomcat; Allaire JRun

Directory Service Software (LDAP): iPlanet Directory Server 4.1, OpenLDAP or slapd (from Univ. of Mich.)

Mail / Proxy Software: QMail, sendmail, ProcMail, Postfix, Squid, 607 Lan Pro for Windows

Web Server Software: Apache Web Server 1.3.x/ 2.0.x, iPlanet WebServer, Windows NT IIS 4.0, BEA WebLogic Server 5.1/6.0, Nginx, HiawathaData Communication Software/Protocol Basic Network Utility, TCP/IP, DNS (using bind), X.25, NIS, NIS+, NFS, RFS, XCOM 6.2, Confidential, Netscape, VisionFS, SSH, VNC, rsync

Cluster Software: Linux Beowulf, OPENSSI, Mosix, Piranha, RedHat Cluster Suite, Veritas Cluster Suite (VCS), PowerHA SystemMirror, Sun Cluster

Performance Software: preVue (Performance and Response Evaluation via User Emulation)

Capacity Planning and System Monitoring: BEST/1 (Monitor, Predict, Analyze) from BGS Systems

For PCs': Putty, VNC, WinSCP, Cygwin/X, SSH, Lotus Notes, Microsoft Office (Access, Excel, Powerpoint, Word), OpenOffice, Internet Explorer, Netscape, Norton Anti-Virus, Reflection/X, BEST/1 Visualizer, LightSpeed for Win 95/98/NT 6 Auer Ct, Suite G, East Brunswick, NJ 08816

WORK EXPERIENCE:

Confidential, Rockville, MD

Senior Linux Systems Administrator

Responsibilities:

  • Perform Linux Systems Administration tasks as server builds (Installation/Deployment) and server maintenance (Patching, Security, and Performance Tuning) on Confidential HPC environment and non-HPC environments.
  • Coordinate with other departments on build/maintenance schedules.
  • Coordinate with users/developers on new custom application needed on HPC environment.
  • Use in-house beowulf cluster together with Son of Grid Engine (SGE) as queueing system running on RHEL 5/6 variant (Scientific Linux 5/6).
  • Setup/Maintain Apache Configuration
  • Use Subversion for Revision Control
  • Use cfengine as configuration management tool.

Confidential, Bethesda, MD

Senior Linux System Administrator

Responsibilities:

  • Perform Linux Systems Administration tasks as server builds (Installation/Deployment) and server maintenance (Patching, Security, and Performance Tuning).
  • Administration/setup of EMC Isilon Storage Cluster (3PTb) use by both the HiSeqX sequencers and the Dell 84-node HPC cluster (including 2 head nodes and 2 login nodes) .
  • Administer HPC cluster using Bright Cluster Computing and use SLURM as queueing system.
  • Use/employ Infiniband on both storage and compute clusters.
  • Setup/Administer LIMS server (by Clarity) for managing sequencer runs (uses PostgreSQL as DB)
  • Setup/Use MariaDB (MySQL variant) for post run analytics.
  • Setup/Use Subversion as revision management tool
  • Establish backup/restore and other technical support as needed using Spectra Logic/BlackPearl (with T950).
  • Coordinate with other departments on build/maintenance schedules.

Confidential, Rockville, MD

LAMP (Linux Apache MySQL PHP) Administrator

Responsibilities:

  • Perform Linux Systems Administration tasks as server builds (Installation/Deployment) and server maintenance (Patching, Security, and Performance Tuning).
  • Administer, support Confidential website migrated to Linux using Apache/NGINX and Drupal (CMS).
  • Establish backup/restore and other technical support as needed.
  • AWS Setup for Confidential Drupal production and development site.

Confidential, Reston, VA

UNIX Systems Administrator

Responsibilities:

  • Perform UNIX Systems Administration tasks as server builds (Installation/Deployment) and server maintenance (Patching, Security, and Performance Tuning).
  • Troubleshoot OS, hardware/software issues relating to the server and escalation to vendor.
  • Utilize virtualization technologies to migrate multiple physical environments to virtual environments using LDOM and Zone (for Solaris); VMWare (for Linux - RHEL); LPAR (for AIX).
  • Coordinate with business on build/maintenance schedules.

Confidential e, MD

Senior UNIX Systems Administrator

Responsibilities:

  • Perform UNIX Systems Administration tasks as server builds (Installation/Deployment) and server maintenance (Patching, Security, and Performance Tuning).
  • Troubleshoot OS, hardware/software issues relating to the server and escalation to vendor.
  • Utilize virtualization technologies to migrate multiple physical environments to virtual environments using LDOM and Zone (for Solaris); VMWare (for Linux - RHEL)
  • Coordinate with business on build/maintenance schedules.

Confidential, Silver Spring, MD

Senior UNIX Systems Administrator

Responsibilities:

  • Perform UNIX Systems Administration tasks as server builds (Installation/Deployment) and server maintenance (Patching, Security, and Performance Tuning).
  • Troubleshoot OS, hardware and software issues relating to the server and escalation to vendor if deemed necessary.
  • Utilize virtualization technologies to migrate multiple physical environments to virtual environments using LDOM and Zone (for Solaris); VMWare (for Linux - RHEL); LPAR (for AIX).
  • Coordinate with business on build/maintenance schedules.

Confidential, Urbana, MD

UNIX Systems Administrator

Responsibilities:

  • Assigned to Confidential as UNIX Systems Administrator to perform server builds (Installation/Deployment) and server maintenance (Patching, Security, and Performance Tuning) for the Restatement Group mostly on Sun Solaris platform (and some Linux - Suse).
  • Troubleshoot OS, hardware and software issues relating to the server and escalation to vendor if deemed necessary.

Confidential, Suitland, MD

Consultant (UNIX Sr. Sys. Engr.) for Confidential Program

Responsibilities:

  • IT Consultant for UNIX Systems Administration (Planning, Installation/Deployment, Maintenance, Performance Tuning of Unix Systems and Network)
  • IT Consultant for SAS Administration (Installation/Deployment, User Management, Maintenance, Tuning and troubleshooting)
  • Systems and Application Programming (Shell, C, Fortran, SAS), Web (HTML, Java, PHP), Database (MySQL, Oracle, and PostgreSQL)
  • IT Lead for Confidential Web Implementation (QWI Online, Confidential Map)

Confidential

Consultant (UNIX Sr. Sys. Engr. / E-Commerce Proj. Mngr.)

Responsibilities:

  • Project Manager, Lead Technical Support and Systems Administrator (Planning, Installation/Deployment, Maintenance, Performance Tuning of Unix Systems and Network) for Confidential 's Web Project using BEA (Tuxedo, WebLogic Server & Enterprise) Software, MS IIS, Netergrity (Portal Protection), iPlanet Directory Server (LDAP) and Java (servlets, EJB) technology.
  • Second Level Support for TSUs' (Solaris, AIX, HP-UX) Systems and Database (Sybase / Oracle) team responsible for providing Systems Administration, Database Administration, Development, and Integration in a UNIX SUN environment.

Confidential

Manager (UNIX Systems Administrator)

Responsibilities:

  • Unix Systems/Network Administration (Planning, Installation/Deployment, Maintenance, Performance Tuning of UNIX Systems and Network) in an SCO, NCR, and DEC environment.
  • Informix DBA for Confidential
  • Migrated PNGBCs’ Electronic Banking (EB) system release for Y2K compliance.
  • Lead technical support for the following software packages: SCO VisionFS, LightSpeed for Wang connectivity, u/SwitchWare & u/voltds (an EB Application), and Informix.
  • Developed ebmain, a menu driven UNIX administration tool written in shell.
  • Developed UNIX utility program/driver to treat the serial ports on a Cisco router/EasyServer unit as if they are serial ports on a local machine.
  • Conducted in-house courses Basic Internet, UNIX Basics/Systems Administration, C Programming.

Confidential

Manager (UNIX Senior Systems Engineer)

Responsibilities:

  • Unix Systems/Network Administration (Planning, Installation/Deployment, Maintenance, Performance Tuning of UNIX Systems and Network), Development, and Integration for SAMBAs’ countrywide UNIX SUN environment to the following groups: Banking Applications Unit (BAU), Retail Banking Technical Division (RTD), Private Investment Banking Group (PIBG), and Data Center Group (DC).
  • Lead technical support for SUN software packages.
  • Implemented DOS-NOVELL-WINDOWS-UNIX integration.
  • Implemented Confidential package for UNIX/Windows integration.
  • Established SNA connection for VISA applications from Riyadh to Citibank Singapore.
  • Developed netadmin, a network administration tool written in shell.
  • Developed network interface routines/programs (OSI and X.25) routines used for printing and routing jobs for Confidential ’s MIGRATION project.
  • Developed network security (TCP/IP) programs proprietary to Confidential ’s requirements.
  • Planned and implemented Disaster Recovery (Contingency) Procedures
  • Developed preVue scripts needed to facilitate system acceptance of applications for release in the Migration project from Perkin Elmer to Sun.
  • Developed programs to convert Concurrent Cobol to MF COBOL and vice versa.
  • Technical assistance in development of multi-threaded front end application used for SAMBAs’ migration (OLTP).
  • Provided capacity planning reports using BEST/1 from BGS.
  • Set-up JESSR Terminal Emulation for SAMBAs’ application.
  • Conducted in-house course on UNIX Basic and UNIX Systems Administration.
  • Plan and implement Confidential 's migration from legacy system (Perkin Elmer) to open systems (UNIX - SUN).
  • Plan and implement UNIX network environment using TCP/IP and X.25.
  • Second Level support for Sybase DBAs’.
  • Provided technical assistance in Confidential 's project with OASIS, an ATM applications for UNIX.

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