Gregory Walker

Senior Mainframe Platform Administrator @Krasan Consulting

ITBackend DeveloperDevOpsTech SupportDatabase Developer

A seasoned mainframe database administrator in both DB2 and IMS database systems of the past 16 years with 15 years of mainframe development experience with COBOL, PL/I, EasyTrieve and Assembler. Currently working as a Senior Mainframe Platform Administrator with Krasan Consulting in modernization of mainframe database systems along with SQL/Server. Including docuementation of current system and changes made during the modernization with the goal of fully modernizing and transition of current mainframe database assets. Also working on the client's NOMAD mainframe system and applications on the clients mainframe VMI v/OS system. Have worked remotely since 2009 for multiple clients and have experience with multiple sights and LPARS. Highly skilled at multitasking. Hard skills: IMS, DB2, SQL, ISPF, TSO, SDSF, BMC database tools, CA database tools, CASE tools, data transformation, z/OS environment, VMI environment, COBOL, PL/I, Assembler, REXX, SQL/Server. Soft Skills: Excellent communication skills, time management, multi-tasking, remote communciations, training and education.

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Work Background

Senior Mainframe Database Platform Administrator

Krasan Consulting ServicesSenior Mainframe Database Platform Administrator

Nov. 2024Chicago, Illinois, United StatesWork with client to improve the efficiency of their mainframe database platforms on z/OS and VMI. Create and update documentation for mainframe database platforms and the current Nomad application on VMI. Work with the applications teams to make more effective database calls. Create ID's and grant access to VMI systems for team members.

Mainframe DB2 DBA Consultant

The Brixton Group, Inc.Mainframe DB2 DBA Consultant

Sep. 2024 - Apr. 2025United States

Consultant Mainframe DBA

SsquareSsoft TechnologiesConsultant Mainframe DBA

Nov. 2023 - Jun. 2024Louisvilly, KY, United States

Consultant, IMS Database Administration.

IT AssociatesConsultant, IMS Database Administration.

Sep. 2022 - Sep. 2023Louisville, Kentucky, United StatesIMS DBA Consultant, working as a consultant at Ensono in there Mainframe IMS managed services.

Senior Mainframe DBA

CognizantSenior Mainframe DBA

Nov. 2020 - Sep. 2022Louisville, Kentucky, United States

Adjunct Faculty

Indiana Wesleyan UniversityAdjunct Faculty

Jun. 2019 - Mar. 2021Louisville, KentuckyInstruct classes in Information Technology and Systems. Classes include programming, business applications, database theory.

Database Administrator

AnthemDatabase Administrator

Jun. 2009 - Dec. 2019AnthemIMS Database Administrator.

Adjunct Faculty

University of PhoenixAdjunct Faculty

Jun. 2004 - Sep. 2014Louisville, Kentucky, United States and OnlineFaculty in the College of Information Systems Technology and the John Sperling School of Business. Teach courses in Business Systems, Business Systems Analysis, Database Concepts and Applications, Programming.

Senior Programmer/Analyst

National Government Services (Anthem Inc.)Senior Programmer/Analyst

Oct. 2001 - Jun. 2009Louisville-Jefferson County, Kentucky, United States• Developed system to merge Medicare Part A Summary Notices with Medicare Part-B Summary Notices based on zip code range that saved National Government Services approximately $1 million dollars in postal costs per year. This system was adopted by CMS (Center for Medicare and Medicaid Services) for use across the National Medicare Financial System. • Ensured programs and output complied with HIPAA regulations for Medicare Part A. • Performed production support on call functions in a 24/7 environment to ensure that Medicare Part A processes completed with the time dictated by the Service Level Agreement. • Project Lead for the United Government Services Coordination of Benefits Transition to the National Government Services Data Center. • Member of the Change Control Board • Member of the Disaster Recovery Team.

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Personal Pitch

Mainframe DB Admin in IMS & DB2

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