Stuart A. Jaskowiak
962 Anderson Hills Dr
Cincinnati, OH 45230
Home: (513) 233-0111
20+ years of system administrator experience in multi-platform Unix and Linux environments.
Deep 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 as well as managing the expectations of non-technical clients.
Excellent technical skills, with strong knowledge of current and emerging technologies.
Excellent communication skills honed during my time as an adjunct instructor at NKU.
Dec 06 – Present Unix Administrator, Citigroup, Blue Ash, OH 45242
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 a cost savings measure for the corporation.
Part of a project to migrate CBOL application servers from AIX to Linux as cost savings.
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.
Jan 09 – Jul 2014 Adjunct Instructor, Northern Kentucky University, Highland Heights, KY 41099
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
Feb 05 – Dec 06 Unix Systems Engineer, Siemens Business Services, Mason, OH 45040
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.
Nov 04 – Feb 05 Unix Systems Engineer, TekSystems, Cincinnati, OH 45236
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.
Oct 01 – Nov 04 Unix Systems Engineer, Cincinnati Bell Telephone, Cincinnati, OH 45202
Lead administrator for conversion of Radius servers from a Linux and homegrown database solution to a system running FreeBSD and MySQL.
Lead administrator for Zoomtown.com's billing system running IAF from Solect with Oracle databases, iPlanet web servers and Sun hardware.
Project manager of CincinnatiExchange.com'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 home.fuse.net 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 CincinnatiExchange.com (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.
Jul 00 – Oct 01 Unix Systems Administrator, Ajilon, Cincinnati, OH 45236
Served as a middleware administrator at the Kroger corporation on the Market Expert/Target Export (MX/TX) system which ran on AIX.
Served as a system administrator for the Cincinnati Bell Yellow Pages on a system that ran Vignette StoryServer on Solaris and Apache on FreeBSD
Master's in Computer Science from NKU, December 2009, GPA of 3.6 on a 4.0 scale.
Master's Level Certificate in Secure Software Engineering, NKU, December 2009. The emphasis was on securing web-based applications from attacks such as SQL Injection, XSS and click-jacking.
RedHat Certified Technician: RedHat Enterprise 4, certificate number 604006428799310.
B.S. in Computer Science, Northern Kentucky University, May 1987. Received a three and one-half year Army ROTC scholarship.
OS: Solaris 2.3 through 2.10; HP-UX 9.04, 10.x and 11.x; Sun OS 4.1.3 and 4.1.4; AIX 3.2.5 through 7.1; Linux 2.0.x, 2.2.x, 2.4.x and 2.6.x; FreeBSD 4.4 through 6.0; Tandem Non-Stop UX; Windows 3.x through Windows 7; DOS.
Languages: C, C++, C#, ASP.NET, Java, Perl, PHP, VB script, Windows WMI script, MSH, Korn Shell, Bourne Shell, C-Shell, Tcl/Tk, Expect, Awk, HTML, Informix ESQL/C, Visual Basic, Informix SQL, Oracle SQL*Plus, Documentum, CA-Clipper.
Databases: SQL Server 2000, SQL Server 2005, Oracle 7.x – 11.x, Informix.
Hardware: IBM RS/6000, IBM PowerPC, HP E, K and V class, Sun Ultra-Enterprise 2 through Ultra-Enterprise 6500, PC’s.