System Administrator Unix and Windows

Randolph T. Rokosz

*** *. ***** ** / **********, DE 19709

302-***-**** / *****.******@*****.***

SUMMARY

Experienced UNIX/Windows System Administrator with cross-platform knowledge in systems/network architecture,

installation, implementation, security and administration on multiple varieties of UNIX and Windows.

HIGHLIGHTS OF QUALIFICATIONS

• Solaris 7 – Solaris 10 in both satellite testing and college research environments, using flash archives, boot

servers, NIS+, Oracle, Java, patch management, ZFS, Veritas configuration, software installs, Samba, RAID,

NAS, Logical Volume Manager, secure shell, backup and adduser Perl and shell scripts, migration to

MacOSX

• CompTIA Security+ certification.

• Write and maintain shell and Perl scripts to perform various Unix/Linux installations and maintenance

• Built from the ground up several servers and created environments of varying operating systems and

architectures.

• Creation and maintenance of my own web site shrpsports.com, where I've programmed in Unix and Perl

scripting languages, in ASP and PHP, using SQL to manage MS Access and MySQL databases.

• Web technologies including Apache, Tomcat, IIS, phpMyAdmin, HTML, XML

• Experience communicating with customers with a wide variety of backgrounds, with the objective of solving

their computing problems and assigning resources to meet their needs.

• Windows 2008/2003 Server and Windows 7/Vista desktops, with Acronis backup and restore, Oracle, Active

Directory, VMware, disk configuration, hardware troubleshooting, software installs

• Finished in the 99% percentile in a recent Solaris 9 and 10 online assessment

• Networking issues involving TCP/IP, DNS/BIND, NIS+, NTP, CIFS, Samba, NFS, DHCP, SNMP, TCP

Wrappers

• Hardware including SPARC Enterprise T1000/2000, SunFire, SunBlade 150, Dell PowerEdge 1650/1950,

Snap Server, Symmetricom Time Server, Dell Optiplex, Inspiron, Latitude

WORK HISTORY

Nov 2010-Apr 2014 BATTELLE MEMORIAL INSTITUTE, Research Scientist, Aberdeen, MD

• Installed and maintained Battelle’s own FAST environment, which is a web application that runs with IIS and

SQL Server in a Windows environment.

• Began creation of a cloud environment consisting of CentOS and Windows servers for Battelle to use to

promote their applications.

• Maintained and migrated Battelle’s own START environment, which is written in Java and handles a huge

database of PDF documents for perusal.

• Worked with a contract with the US Army in a sustainment role, administering groups of Windows servers,

Red Hat servers, and Solaris machines in local network, at Ft. Monmouth in New Jersey, and at DISA.

• Coordinated among contractors and civilians with different needs and security restrictions to keep the current

PDM system working while providing multiple upgrade paths.

• Administered a Windows 2003 Apache Tomcat server that hosts a KONFIG application that interfaces with

an Oracle 9 database on a Solaris 10 platform

• Coordinated the transfer of CBRNIAC roles off a Windows domain to disparate environments in different

locations, and maintaining them at their new locations.

• Worked out all the Information Assurance (i.e. security issues) with both the production KONFIG system and

its potential replacement

• Worked with the Aberdeen Proving Ground networking group to get approval for new software packages that

have not run in a government environment before.

July 2010-Oct 2010 BLACKROCK, System Administrator, Wilmington, DE

• Worked with a large team of administrators for thousands of Solaris and Red Hat Linux servers in multiple

locations all over the world.

• Became very comfortable with jumpstart servers and using images to build numerous Solaris servers.

• Participated in a few after-hours exercises where we practiced a failover from one data center to another,

including a shift from mirrored NIS+ and NFS servers in one location to the other.

• Coordinated primarily with another team in Singapore where we covered the data centers 24/7.

May 2010-June 2010 ABACUS Solutions Group, System Administrator, Washington Navy Yard, DC

• Administered two HP blade servers running HP-UX, often answering calls and responding to system issues

during off hours.

• Began to respond to additional issues on the computer floor, primarily rack-mounted Windows servers, as I

was often in the area already.

• Left for employment much closer to home.

Jun 2008-Mar 2010 INTEGRAL SYSTEMS INC., System Administrator, Columbia, MD

• Administered multiple heterogeneous networks containing machines running Sun/Solaris, Windows Server

2000/2003, Windows 2000/XP, Snap Servers, RedHat & SuSE Linux, and HP-UX. These were used for

testing our satellite software, after which the software and machines were replicated in production.

• Took on the maintenance of additional hardware and software for the commercial group. This included

similar platforms, but also IRIX on an Indigo machine.

• Maintained the communication amongst all these machines, using Samba, NFS, Veritas, Windows shares

• Conducted performance testing using both Windows and Solaris, with special tests involving NAS and RAID

configurations.

• Wrote and maintained shell and Perl scripts to perform installations and maintenance.

• Received a secret clearance with the federal government.

2001-2008 UNIVERSITY OF DELAWARE, Campus Information Technology Associate, III College of

Marine & Earth Studies, Newark, DE

• Served as sole administrator of a network of Sun/Solaris machines, installed and upgraded scientific

applications, migrated users to a Mac OSX environment, then took on a more Windows-based responsibility,

configuring Windows 2003 Servers and performing as the primary point of contact for any computing issues

for the college.

• Set up RedHat and Ubuntu Linux machines for both myself and University of Delaware students

• Evaluated new software and hardware with respect to how they might be implemented to better suit the users’

needs, taking into account new features and the costs involved

• Streamlined an NIS+ environment containing various levels of Solaris that I upgraded to versions 9 and 10

• Managed a Sun sendmail mail server that stored and forwarded email for half our college, then migrated all

these users to either UD’s Mirapoint server or to Microsoft Exchange

• Helped researchers migrate their Sun needs to a Mac OSX network consisting of a couple of servers and

several clients, some running VMware Fusion software

• Converted all Sun applications to NFS mounted partitions so that they only had to be maintained in one area;

assigned resources among various Suns and Macs so that they could share Terabytes of data

• Wrote Perl, sed, awk, and shell scripts to perform periodic administration functions

1987-2001 AIR FORCE RESEARCH LABORATORY, Computer Scientist, GS-12, Kirtland AFB, NM

• Worked my way up from an entry-level GS-7 to a more managerial position where I oversaw a contract

regarding the administration of a heterogenous UNIX environment that served everyone from the scientific

community to administrative users of applications such as Oracle and e-mail service.

• Administered a series of VAXes that served the needs of the entire laboratory, and migrated their users to a

SunOS environment

• Managed the DNS and Cyberguard firewall for our laboratory; coordinated the port configuration to

cooperate with the Base firewall and with directive that spanned over three other bases

• Provided direction regarding a Unix maintenance contract where I was chief advisor to a group of contractors

that handled a series of Solaris and AIX machines

EDUCATION

Bachelor of Science in Computer Science and Mathematics, Magna Cum Laude

Eastern New Mexico University, Portales, New Mexico

COMMUNITY SERVICE

2002-present Treasurer, M.O.T. Big Ball Marathon, Middletown, Delaware

Contact this candidate