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System Administrator Customer Service

Illinois, United States
February 03, 2018

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Mark A. Wellman

**** * ******* **

Morgantown, IN 46160

phone: 317-***-****


Oracle Corp. – Indianapolis, IN 2015-2016

Principal Security Analyst

Implement AAA solution using OpenLDAP and RCDevs multifactor authentication.

Established LDAP replication across Asia, Europe, and US using 6 OpenLDAP masters.

Linux System Administration and limited Windows Administration.

Shell scripting to automate tasks using ksh (korn shell).

Sears Holdings – Chicago, IL 2013-2015

Team Lead - Infrastructure

Install and configure LDAP directory server 389-ds & Sun ODSEE supporting 500,000 directory entries.

Established replication topology utilizing Masters, Hubs, and Consumers.

Automated installs and custom configurations using Puppet.

System Administrator on Linux CentOS, Redhat, Ubuntu (e.g. shell scripting/troubleshooting/Nagios monitoring).

Perform tier 3 (last tier) level support 24 X 7.

Support of LDAP batch processing (PHP, Java) which included on call duties.

Support of SSO solution utilizing SAML.

Wellpoint Inc. (National Government Services) – Indianapolis, IN 2002-2012

Senior IT Advisor (UNIX System Administrator/Infrastructure team lead)

Responsible for Administration of Sun Solaris systems (e.g. installation/operating system upgrades and patching/shell scripting/configuration/troubleshooting/architecting solutions).

Install, configure, and administer third party software (e.g. Web Servers-iPlanet, apache, tomcat /Directory & Proxy Server (ODSEE), Siebel, Veritas Volume Mgr & Netbackup, Actuate, Jacada).

Interact heavily with all aspects of the business including Deployment, Security, Requirements, Development, Configuration Management, and QA.

Responsible for performance tuning and monitoring on LDAP and Unix infrastructure.

Implemented Sun’s LDAP proxy and directory in a multimaster replication configuration.

Architected, installed, and configured highly available LDAP infrastructure to support 16 million directory entries.

Instrumental in implementing Sun’s Password Self Service using IDM (Identity Manager).

Heavily involved in 3 Mitre Security Audits in the Data Center.

Infrastructure Team Lead in obtaining CMMi (Capability Maturity Model) Level’s 2 thru 4.

Security Clearance Level 1.

Updated servers to adhere to the DISA STIG’s.

Perform tier 3 (last tier) level support 24 X 7.

Created and updated required documents such as SOP’s, Configuration Management Plan, Architecture Plan, and System Security Plan.

Team lead in implementing real time Integration layer to back-end mainframes for Health and Human Services (HHS) Medicare data.

Participated in live cutovers (DR testing) to hot mirror site and returns to primary site with full capabilities activated. (executed twice a year).

Fischer International Systems Corporation – Naples, FL 2000-2002

Directories Consultant / Project Manager

Responsible for Meta-Directory implementations and support (X.500, LDAP).

Conduct training on Siemens X.500/LDAP product.

Perform UNIX System Administration duties on Sun Solaris.

Install and configure third party software for lab simulations as needed (e.g. Peregrine, Oracle, Netscape/iPlanet, Siemens).

Perform demonstrations of our solution for potential clients.

Participant in development of company “White Papers”.


Thomson Consumer Electronics / RCA – Indianapolis, IN 1996-2000

Manager Midrange Systems (2 years)

UNIX System Administrator (AIX, SUN)


Essex Wire –Ft. Wayne, IN 1995–1996

Senior Systems Analyst

Merrill Lynch – Jacksonville, FL 1995-1995

Senior Systems Analyst

Thomson Consumer Electronics / RCA – Indianapolis, IN 1986-1995

Senior Systems Analyst

Federal Mogul Corporation – Detroit, MI & VanWert, OH 1981-1986

Programmer Analyst (Work/Study College Student-alternate quarters)


Sun Certified System Administrator

Work/Study College Education Student (1 of 5 selected from 80 applicants)

Award for best exemplifying corporate values at Thomson (1 of 25 selected from 1400)

Information Systems Management Program at Thomson

“You Make the Difference” award from CMS for contribution to achieving CMMi Level 3

“Eagles Nest” nominee for Customer Service at National Government Services


Bachelor of Science from Ball State University Muncie, Indiana

Major: Computer Science

Double Minor: Business; Applied Mathematics

Graduated Cum Laude

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