Stuart A Jaskowiak, MSCS

IT Professional


  • Deep experience of system administrator experience in multi-platform Unix and Linux environments.
  • Demonstrated expertise in the OS and application stack including architecture, installation and supporting large scale migrations with minimal downtime.
  • Strong communication abilities, with history of mentoring junior systems administrators, managing the expectations of non-technical clients and formal classroom training at the university level.
  • Excellent technical skills, with strong knowledge of current and emerging technologies.

Work Experience

Senior Unix Administrator, Andersen Corporation, Oak Park Heights, MN 55082

February 2016 - August 2016

  • Serving as part of the Systems Administration team that supports the infrastructure that Andersen uses for MES (Manufacturing Execution System), ERP (Enterprise Resource Planning), WMS (Warehouse Management System) and TMS (Transportation Management System). This infrastructure runs a combination of AIX, Red Hat Linux and Windows.
  • Serving as the Lead Administrator of the Operations team for the Andersen Systems Administration team.
  • Developed reports to extract data via JIRA's REST API to better allow Andersen management to determine total hours and tasks being worked by the Systems Administration and other infrastructure teams.
  • Lead administrator for migrating Renewal by Andersen's ERP infrastructure from HP-UX to Linux.
  • Lead administrator for migrating Andersen's primary ERP system from HP-UX to Linux.
  • Development of scripts in python and shell to maintain the RedHat Linux satellite server used in installation of server OS and for patching.
  • Development of scripts to allow for the automated installation of a "golden image" of Red Hat Linux via the satellite server.
  • Serving as a SME (Subject Matter Expert) on vulnerability management for the Andersen infrastructure.

Senior Unix Administrator, Interactive Business System, Cincinnati, OH 45246

February 2016 - August 2016

  • Served as a contract administrator for Andersen Windows in Oak Park Heights, MN on an 180-day contract prior to coming on as a permanent employee

Senior Infratructure Technology Analyst at Citigroup

December 2006 - December 2015

  • Serving as part of a Systems Administration for Citibank Online (CBOL), Account Online (AO), CitiMobile with 1100+ systems running AIX, Solaris and Linux.
  • Lead administrator for a project to migrate AO from Solaris to Linux and AIX as part of cost savings measures for the corporation.
  • Part of a project to migrate CBOL application servers from AIX to Linux as part of cost savings measuers for the corporation.
  • Served as a subject matter expert (SME) to develop procedures to apply patches to CBOL and AO AIX servers.
  • SME on development of procedures to apply firmware upgrades to the CBOL AIX servers via an IBM Hardware Management Console (HMC).
  • SME for development of procedures to allow upgrades to the HMC OS.
  • Development of documentation to allow junior Unix engineers a greater understanding of Citi's infrastructure and processes.
  • Lead administrator on a project to migrate 100 Solaris servers, 50 IBM servers and 15 Windows servers from Long Island City, NY to Blue Ash, OH with a minimum of downtime and impact to testing for CBOL.
  • Installation of CBOL software on a multi-tier infrastructure consisting of Websphere, Oracle and iPlanet on AIX servers.
  • Installation of CBOL software on a multi-tier infrastructure consisting of Weblogic, Informix, Broadvision and iPlanet on Solaris servers

Adjunct Instructor, Northern Kentucky University, Highland Heights, KY 41099

January 2009 - July 2014

  • Taught CIT (Computer Information Technology) classes to students ranging from freshmen to post-baccalaureate candidates.
  • Courses were Linux/Unix based and ranged from an Introduction to Unix class to an advanced class in Systems Administration.
  • Course material covered include basic command line operations, regular expressions, shell scripting, operating system installation and maintenance.
  • Received 3 "positive impact on a senior" letters of commendation during my tenure

Unix Systems Engineer, Siemens Business Services, Mason OH 45040

February 2005 - December 2006

  • Provided Unix support for all Siemens Business Services (SBS) clients, including SBS's largest client - Washington Mutual Bank (WaMu) with 1000+ Unix systems running Solaris, AIX, HP-UX, Linux and FreeBSD.
  • Developed shell scripts that allowed SBS engineers to install system upgrades on WaMu's 1000+ Unix servers.
  • Developed a PHP/MySQL based website that allows SBS engineers to monitor WaMu's Veritas Netbackup infrastructure of 36 Masters, 1200+ Policies and 3700+ clients from three remote SBS sites.
  • Developed PERL applications that are being used for reporting on WaMu's Veritas Netbackup infrastructure.
  • Modification and new development of PL/SQL reports for WaMu's Veritas Netbackup infrastructure.
  • Developed a Windows Management Instrumentation (WMI) script that allows SBS engineers to more effectively inventory CPU's, disk space, memory and IP address information on WaMu's 12,000+ Windows-based servers and 50,000+ workstations.
  • Developed a PHP/MySQL based website that allowed SBS to transition WaMu's 12,000+ Windows, Unix and OS/2 servers into SBS monitoring and control in 6 weeks instead of the typical 10.
  • Served as an SME for SBS in areas of backups, scripting, database design and web site development and all aspects of Unix operating systems for junior Unix engineers.
  • Developed a ASP.NET/C# application used by SBS to schedule patching efforts on their client's Windows, Linux and Unix servers

Unix Systems Engineer, TekSystems Cincinnati OH 45236

November 2004 - February 2005

  • Served as a contract administrator for Siemens Business Services in Mason, OH on a 90-day contract prior to coming on as a permanent employee

Unix Systems Engineer, Cincinnati Bell Telephone, Cincinnati OH 45202

October 2001 - November 2004

  • Lead administrator for conversion of Radius servers from a Linux and homegrown database solution to a system running FreeBSD and MySQL.
  • Lead administrator for's billing system running IAF from Solect with Oracle databases, iPlanet web servers and Sun hardware.
  • Project manager of's conversion from Vignette StoryServer to PHP.
  • Project manager for creation of additional services on the Managed Business Hosting servers to include: implementation of PHP on IIS, implementation of MySQL on FreeBSD and Windows 2000.
  • Project manager for the upgrade of from RedHat 6.0 to FreeBSD 4.8.
  • Served as Webmaster for web hosted business clients for all of Zoomtown and Fuse running on a combination of IIS on Windows 2000 and 2003 and Apache on FreeBSD and RedHat web servers.
  • Served as Webmaster for Fuse Internet's home page customers.
  • Worked on conversion Fuse RADIUS from custom application using Berkeley DB to an open-source solution using LDAP.
  • Developed PHP-based inventory program for use by all of Zoomtown's business units.
  • Developed VB script applications used in automating creation and deletion of business hosting customers on Windows NT and Windows 2000 servers.
  • Developed PHP/MySQL based web applications for internal use of the Zoomtown's Systems Engineering team.
  • Lead Administrator for server used in the upgrade of all Zoomtown customer's Cisco DSL routers from CBOS 2.3.5 to CBOS 2.4.6.
  • Development of shell, perl, expect and awk scripts used in monitoring of the (CX) web site's infrastructure.
  • Performance tuning of both the Apache web servers and Vignette Story Server software used in CX.
  • Lead Administrator for all of CincinnatiExchange's hosted web sites on servers running Apache on Linux

Unix Systems Administrator, Ajilon Cincinnati OH 45236

July 2000 - October 2001

  • Systems Analyst, Kroger, April 2001 - October 2001
    • Development of shell, perl, and awk scripts for data migration from MarketEXPERT/TargetEXPERT (MX/TX) into other databases for reporting purposes.
    • Monitoring of the MX/TX servers for both performance problems and disk space utilization.
    • Assisted Kroger employees in design of a web interface to the MX/TX systems.
    • Assisted Kroger employees in all aspects of Unix systems maintenance.
    • Developed Visual Basic applications to allow Kroger employees access to monitor the space usage of the 40 MX/TX servers.
    • Lead developer for conversion of Ralph's Foods marketing database from a proprietary mainframe based system into an AIX-based MX/TX system.
    • Part of a team to convert Dillon's, Fry's and King Soopers from MX/TX on Unixware servers to MX/TX on AIX servers.

  • Unix/Web Site Administrator,, July 2000 - April 2001
    • Development of shell, perl, expect and awk scripts used in monitoring of the (CX) web site's infrastructure.
    • Performed installs and upgrades of the Apache web servers used to server CX web pages.
    • Performance tuning of both the Apache web servers and Vignette Story Server software used in CX.
    • Performance tuning of Solaris for both Oracle servers and Apache servers.
    • Assisted in the migration of, and from IIS based web sites to Apache/Vignette sites.
    • Assisted third party web page creation companies with issues regarding web pages on CX-based hardware.
    • Assisted in the creation of as the online resource for purchase of all products and services.

Senior Client/Server Systems Administrator, American Financial Group/Information Technology Division, Cincinnati OH 45202

January 1999 - July 2000

  • Administration of the corporate Unix infrastructure running NT, Solaris, AIX and HP-UX.
  • Lead Administrator for Y2K testing.
  • Migration of CD-ROM based documentation server from an unsupported Novell solution to one running Solaris x86.
  • Administration of the corporation's internal DNS.
  • Performed installation and upgrades both hardware and software used on the company firewall.
  • Installation of Apache Web Server to allow access to Unix administrator and other documentation via the corporate Intranet.
  • Installation of Netscape Enterprise Server and Netscape Directory Server to allow employees access to Human Resource information via the corporate Intranet.
  • Development of shell, perl, tcl/tk, expect and awk scripts used in monitoring of the corporate Unix infrastructure.
  • Part of a decision making team that recommended purchases of over $1,000,000 in server and other hardware upgrades during 1999.
  • Installation and usage of performance monitoring tools on the corporate Unix infrastructure.
  • Installation and maintenance of enterprise backup servers running Legato's Networker.
  • Liaison between the company and outside vendors for both purchases of equipment and software and for maintenance of equipment.

Unix Systems Administrator, TechniSource, Jacksonville FL 32216

July 1998 - January 1999

  • Served as a contractor for Citibank's Universal Card Services
    • Administration of the UWIN environment on approximately 50 Sun Servers running a combination of SunOS and Solaris.
    • Administration of aproximately 9,000 Unix based clients using either SunOS or Solaris.
    • Implementation of NTP for the clients and servers.
    • Assisted in the integration of UCS from being part of AT&T to Citibank.
    • Installed UWIN at the Citibank office in Erlanger, KY.
    • Installation of Jumpstart Servers to install OS's onto clients.
    • Development of scripts to automate update of web based documentation.

Client Server Systems Administrator, American Annuities Group Information Systems, Cincinnati OH 45202

August 1997 - July 1998

  • Administration of the corporate Unix infrastructure running NT, Solaris, AIX and HP-UX.
  • Administration of the corporate imaging system running AIX and FileNet.
  • Administration of the corporate internal DNS.
  • Webmaster of internal web sites.
  • Unix Administrator in charge of Y2K testing of Client/Server Applications.
  • Development of shell, perl, tcl/tk, expect and awk scripts used in monitoring of the corporate Unix infrastructure.
  • Installation and usage of performance monitoring tools on the corporate Unix infrastructure.
  • Installation and maintenance of enterprise backup servers.
  • Liaison between the company and outside vendors for both purchases of equipment and software and for maintenance of equipment.

Systems Administrator, Cap Gemini America, Cincinnati OH 45242

May 1997 - July 1997

  • Served as a Unix Systems Adminstrator on contract to Proctor & Gamble
    • Installation of software on HP-UX 10.0 systems including Oracle and Documentum.
    • Development of awk and shell scripts used in monitoring the HP system.
    • Development of Oracle database triggers used in maintenance of the Documentum database.
    • Support of the Documentum User community via the Documentum Help line.

Cell Site Administrator, Nationwide Contracting Services, Canton OH 44702

December 1996 - May 1997

  • Served as a CDMA (code division multiple access) digital cellular phone site administrator for Bell-Atlantic Nynex Mobile in Greenville, SC as a contractor provided by Motorola's Cellular Infrastructure Group.
    • Monitored the CDMA cellular phone system running on a combination of Tandem Non-Stop UX and Solaris through shell scripts.
    • Development of Awk, Informix SQL and HTML programs to generate reports on usage of the cellular phone system.
    • Provided training for Bell-Atlantic personnel on use of the CDMA cellular phone system.
    • Developed information sharing resources for the Motorola drive-team members.
    • Liaison between Bell-Atlantic and Motorola in problem reporting.

Computer Specialist, Internal Revenue Service, Covington, KY 41019

December 1987 - December 1996

  • Programmer, Telefile Project - a project to allow filers to input tax returns via a touch tone phone, April 1996 - December 1996
    • Worked on a team redesign of the system to allow expansion from 1040EZ filers only to all 1040 filers.
    • Assisted in Informix Database design to allow this expansion to take place.
    • Lead programmer on the interface between TeleFile and further returns processing.
    • Developer of support applications for the branch in the TeleFile project.

  • Systems Administrator/Programmer - Served on the Technical Support Staff of the Electronic Filing Branch (EFB) working on the Electronic Filing System (EFS) project, September 1989 - June 1995
    • Development of client-server applications in use at 4 other EFS service centers and sixty-three district offices and also used in day-to-day operations of the EFB. These applications saved the IRS approximately $1,000,000 in printing costs over the 5 EFS service centers.
    • Served as phone support for the EFS BBS used to distribute information to the other EFS offices through out the country.
    • Served as a lead developer on the EFS Applicant's Databases. This development project saved the IRS approximately $250,000 in development costs and I received an award from the National EFB administator in recognition of it.
    • Systems Administrator of the EFB's Local Area Network (LAN).
    • Administration of PC's, Novell servers and mini-computers used in support of the EFS project.
    • Systems Administrator on a Pyramid MIS-Server running DC-OSx, Pyramid's version of Unix SVR4, in Aug 94.

  • Programmer/Analyst - Banks, Post Offices and Libraries Program (BPOL), a Worldwide Tax Forms Distribution program, June 1988 - June 1989
    • Development of PC applications used in support of BPOL.
    • Development of mainframe applications used in support of BPOL.
    • Administration of all PC and mainframe equipment used in the BPOL project.
    • Served as a consultant in the areas of materials purchasing and maintenance of existing equipment.

  • Data Transcriber, Dataconversion Branch, December 1987 - June 1988
    • Transcribed paper tax forms into the IRS mini-computer used for paper filing
    • Transcribed paper check information into the IRS mini-computer used to reconcile deposits

Key Skills

  • Solaris
  • HP-UX
  • Sun OS
  • AIX
  • Linux
  • FreeBSD
  • Tandem Non-Stop UX
  • Windows Desktops
  • DOS
  • C
  • C++
  • Java
  • PERL
  • Python
  • BASH
  • KSH
  • SQL
  • Visual Basic


Northern Kentucky University

Masters of Science in Computer Science

GPA 3.6 on a 4.0 scale

Northern Kentucky University

Bachelors of Science in Computer Science

Received a three and one-half year Army ROTC scholarship.

Northern Kentucky University

Masters Level Certificate in Secure Software Engineering

Emphasis was on securing web-based applications from attacks such as SQL Injection, XSS and click-jacking.

Red Hat Corporation

Red Hat Certified Technician

Certificate Number 604006428799310