UNIX Admin

Christopher T. Warren

Summary:

Systems Architect & Lead Administrator with 25 years of professional experience

Proficient in Linux, AIX, Solaris and Windows environments

Specialist with UNIX/Linux shell programming and Perl programming

Proficient in data extraction from and analysis of SQL/MySQL databases

Expert in architecture and administration of enterprise Domino environments

Outstanding technical presentation and training skills

Experience in process improvements in large distributed enterprise environments

Technical Qualifications:

Operating Systems: AIX 5.2+, Solaris 8-10, Windows Server NT, 2000, 2008, RedHat Enterprise Linux 2-7, SuSE Linux 9-11

Hardware: IBM p5, p6 frames and servers, Sun v440 family and newer servers, and E15kfamily frames, HP BladeCenter

Networking: Mail gateways, DNS, DHCP appliances, LAN/WAN routing equipment, SAN (EMC/Hitachi) connectivity, virtualized networking

Software: DB2, MySQL, Domino/Notes R5+, Linux Volume Manger, Exchange Server 2007/2010/2012,

WebSphere, Tivoli Management Suite, Tivoli Endpoint Manager, NetBackup, db2, Oracle,

Control-M, VERITAS Storage Foundation, VERITAS Cluster Server, VMWare, SolarWinds

Education & Certification:

University of California, Los Angeles 1989-1993

Double-major in Linguistics and Biochemistry

Certification on Red Hat Administration

Certification for HP NetServer hardware

Certification for Solaris Shell Scripting

Certification on IBM p5 Virtualization

Professional Experience:

Northwestern Mutual Life, Franklin WI Apr 2018 – Aug 2018

Linux Administrator

Administered and maintained corporate Linux/AIX server environment

Developed custom monitoring tools

Responded to generated reports of server performance anomalies.

Time-Warner Cable, Charlotte NC Sep 2017 – Oct 2017

Linux Administrator

Administered and maintained corporate Linux farm

Responsible for heterogeneous RedHat Linux server environment

Created user-requested health and usage monitors

Oracle Textura, Deerfield IL Mar 2016 – Jul 2017

Senior Linux Administrator

Administered and maintained corporate application infrastructure on HACMP-enabled LAMP servers via VMWare

Responsible for heterogeneous RedHat Linux server environment

Conducted scheduled and routine Linux System updates on dedicated and virtual servers

Maintained corporate SaaS infrastructure of construction payment management system software

Added and removed user access from servers and software offerings

Automated routine maintenance activities on Linux server farm.

Upgraded server farm Java installations

Accenture, Chicago IL Nov 2015 – Jan 2016

Linux/UNIX Administration (Contract Position)

Participated in team overseeing State of Ohio public health benefits enrollment system

Lead team overseeing State of California Fi$Cal financial transparency system VI ServiceNow ticketing.

Conducted scheduled and routine Linux & AIX System updates on dedicated and virtual servers.

Conducted audit on automated system maintenance scripts on both systems

Led Novell system OS upgrades to LAMP Stack servers

TransChicago Truck Group, Bensenville IL Oct – Nov 2015

Linux Administration Lead (Contract Position)

Lead health check on VCS-enabled server system via VMWare

Audited automated system maintenance scripts, user access base, and automated tools.

Configured replacement remote VPN server

Rearchitected and automated SuSE Linux backup solution

IBM, Columbia MO (remote) Mar – Oct 2015

Linux-AIX engineer, server build factory (Contractor)

Built Linux RedHat 6 and AIX servers for clients under contract to IBM MHS via VMWare

Built and audited AIX servers for Amtrak ticketing system.

Developed documentation to further build and operational efficiencies

Administered and audited systems for adherence to defined standards

Audited systems for SQL compatibility

Revamped automated Red Hat build script system.

The Advisory Board, Vernon Hills IL Jan – Dec 2014

Lead Technical Analyst

Maintained and upgraded RedHat 6 Linux (LAMP stack) systems running proprietary health care auditing systems.

Developed PERL and Korn/bash automated shell scripts on Linux and Windows hosts to monitor and alert sysadmins on potential trouble spots

Developed PERL and Korn/bash shell scripts to set up new member data load automation. Into MySQL data tables

Troubleshot data import issues by tracing java code.

Led design of system to automate member data normalization prior to db injection

Installed and configured PowerShell, WinFTP, SCP, and puTTY programs.

Created Splunk ingestion and monitoring system.

Bank of America, Chicago IL Jun – Dec 2013

System Monitoring (Contract Position)

Created and modified syslog / rsyslog system monitors for Solaris and LAMP stack systems (RedHat based) through Splunk

Documented Splunk system for internal users

Created scripts to carry out requested automated monitoring activities and remediations.

Created dashboards for needed monitors

Conducted internal training on Splunk software use

U.S. Cellular, Bensenville IL Feb – Apr 2013

Platform Delivery Project manager (Contract Position)

Led project on audit and remediation for PCI standards compliance on RedHat Linux 5 Server Environment virtualized via VMWare for OS rights and identity management.

Led team tasked with new environment audit.

Developed Korn./bash shell scripts to monitor and remediate audit areas on ongoing basis

Developed documentation of auditing system for ongoing support

Performed RedHat Linux system security auditing

Advised permanent staff on best practices to maintain PCI compliance.

Experian, Schaumburg IL Jun 2012 – Jan 2013

Sr. Systems Administrator (Contract position)

Lead ongoing support for data integration, preparation and validation via automated Perl script development and maintenance

Extensive work in Perl scripting on SuSE Linux and Windows 2003, 2008 servers

Significant MySQL database maintenance responsibilities including database schema creation for new data sources and integration into existing schemas.

Created system to monitor database integrity and data standard compliance.

Installed and configured various windows apps for db connectivity and file transfer

Walgreens, Lincolnshire IL Mar – Dec 2011

UNIX Architecture Project manager (Contract Position)

Led audit and remediation project team for Sarbanes-Oxley compliance on Solaris/AIX/RHEL mixed environment via OS and identity management systems.

Developed scripts to automatedly monitor and remediate audit areas on ongoing basis

Standardized sudoers files across operating systems.

General Linux/UNIX system administration responsibilities, including disk management and SAN connectivity

Conducted RedHat systems admin for user management

Discover Financial Services, Riverwoods IL Oct 2010 – Mar 2011

Enterprise Monitoring (Contract Position)

Maintained and created monitors in enterprise Tivoli environment.

Wrote automated monitoring applications in Korn shell and Perl for mixed RedHat/SuSE Linux (LAMP), AIX, and Solaris environment

Trained internal users on monitoring standards and best practices

General maintenance/administration for WILY monitoring and reporting

HSBC USA, Volo IL Feb 2001 – Mar 2009

Senior Analyst, Enterprise UNIX

Architected and implemented migration and expansion of business intelligence SAP server farm to virtualized AIX environment running WebSphere on IBM p590 frame.

Architected and implemented virtualized NetBackup, storage, and networking systems for AIX Hypervisor environment.

Administered enterprise-wide MySQL database system on AIX, Solaris, VMWare, and SuSE/RedHat Linux (LAMP stack) servers

0 through physical migration to new data center.

Administered North American Domino environment through migration from PROFS-based green screen mail to Solaris clustered frames.

Developed support process and maintenance tools and environment on Solaris and Windows servers.

After acquisitions, integrated multiple messaging systems. Architected and implemented transition of Domino environment to distributed AIX environment.

Documented and trained Domino desktop support procedures to first-line support staff nationwide.

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