Senior Linux Systems Administrator Resume
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.
