Summary
Overview
Work History
Education
Skills
Additional Information
Timeline
Generic

David Gibson

Earth City,Mo

Summary

Seasoned Mainframe Developer and Team Lead with over 20+ years of expertise in COBOL, IBM DB2, IMS, VSAM, and CICS. Skilled in batch processing, system integration, and data management, with a strong focus on debugging, production support, and system conversions. Proven experience leading software development teams, managing complex projects, and applying SDLC and Agile methodologies to deliver high-quality solutions. Adept at ensuring system integrity and streamlining processes across sectors including healthcare, finance, and government.

Overview

22
22
years of professional experience

Work History

Mainframe Tech Lead

Manutek
11.2023 - 01.2024
  • Company Overview: Department of Finance and Accounting, Remote
  • Distributed detailed instructions to seven decentralized consultants, ensuring clear communication and alignment across teams
  • Acted as the primary point of contact for management, efficiently directing all issues through me for resolution and escalation
  • Managed all technical inquiries, providing solutions directly or coordinating with relevant resources to deliver accurate responses and feedback
  • Worked remotely as a lead for three offshore Cobol developers and in charge of getting their weekly timesheets
  • Managed weekly timesheet reports based on those timesheets
  • Supported those consultants in helping them with their background screening applications
  • Department of Finance and Accounting, Remote

Cobol Consultant

GDH Corporation / Blue Cross Blue Shield of Alabama
05.2022 - 05.2023
  • Company Overview: Remote
  • Worked remotely as part of a collaborative team and was responsible for multiple program updates
  • Updated programs in private libraries and retrieved software using Compuware’s ISPW
  • Utilized COBOL, IBM DB2, sequential files, and various IBM utilities in a mainframe environment
  • Worked with IBM Mainframe, COBOL-2, QSAM, VSAM, and CICS in a Z/OS environment
  • Employed CA-Intertest for both batch and CICS processing, including development of CICS screens
  • Developed three programs to extract data from the master file and populate it into screens
  • Applied CI/CD practices in a mainframe environment using Agile methodologies and sprints to deliver solutions
  • Leveraged COBOL, IBM DB2, CICS, and Endevor for efficient deployment and version control
  • Remote

Batch Developer / Consultant

General Dynamics Info Tech / Eliassen
11.2021 - 01.2022
  • Company Overview: Remote
  • Worked remotely in a short-term position as part of a team, focusing on multiple program updates
  • Conducted IBM DB2 updates via Spufis to test and validate program functionality
  • Utilized CICS, COBOL, IBM DB2, and Endevor in a Z/OS environment to manage and update systems
  • Managed CICS, developed green screens, and linked several programs to them for user interaction
  • Implemented DevOps practices within an Agile environment for efficient reporting and progress tracking
  • Remote

Mainframe Developer / Cobol Programmer

Consultant, Zions Bank
08.2020 - 08.2021
  • Company Overview: Remote
  • Worked remotely as part of a team, contributing to multiple systems
  • Developed and maintained the Kiting system, designed to detect fraud situations, using COBOL
  • Collaborated remotely on a conversion project from Wells Fargo to Principal
  • Modified COBOL programs to align with Principal standards and conducted thorough testing to ensure functionality
  • Managed source code from Wells Fargo, including COBOL-II, VSAM, IBM DB2, and various mainframe utilities
  • Remote

Mainframe Developer / Cobol Programmer

Matrix Resources / Principal Ins
07.2020 - 08.2020
  • Company Overview: Remote
  • Worked remotely as part of a team on the conversion project for Principal from Wells Fargo
  • Converted source COBOL code to COBOL-6
  • Collaborated effectively with cross-functional teams to ensure smooth transition and integration
  • Ensured code quality and adherence to project timelines during the conversion process
  • Remote

Senior Software Engineer

Epam Systems
02.2019 - 01.2020
  • Company Overview: Chattanooga, Tenn
  • Developed 4 batch COBOL programs via Topaz, compiled, and ran tests
  • Worked as part of a 4-person team on mainframe projects
  • Prepared for client work with Cigna, learning and adapting to project requirements
  • Utilized Topaz as the CA interface to the Mainframe, enhancing program analysis and debugging
  • Collaborated using Agile methodology, participating in daily stand-up meetings
  • Replaced traditional green screen interfaces with Topaz for program analysis and debugging
  • Worked with Endevor to manage program versions and facilitate movement across environments
  • Chattanooga, Tenn

Senior Cobol Application Developer

Talentburst
03.2018 - 12.2018
  • Company Overview: Omaha, NE
  • Implemented several production fixes involving Batch COBOL, JCLs, and Procedures
  • Utilized Agile methodology, with tasks timed for quick turnaround and daily stand-up meetings
  • Contributed to the production operations team, addressing mainframe-related production issues
  • Worked with COBOL, IBM DB2, and sequential file systems to resolve production challenges
  • Worked as part of a credit card batch authorization team, focusing on production issues
  • Ensured timely resolution of critical production issues, maintaining system stability and performance
  • Omaha, NE

Senior Application Developer / Consultant MMIS / Medicaid / Lead

InfoCrossing Health
02.2016 - 01.2018
  • Company Overview: Jefferson City, MO
  • Worked as part of a Medicaid (MMIS) team responsible for processing claims
  • Contributed to loading several IBM DB2 tables using COBOL-II programs
  • Analyzed loaded data to ensure accuracy and integrity
  • Utilized File-Aid for IBM DB2 to perform data analysis and validation
  • Worked with private libraries for programs, JCLs, and procedures
  • Developed new batch programs to compare quarterly data with previous quarters for MMIS HCC-360 claims processing
  • Used File-Aid for IBM DB2 to view data and Expeditor for testing and debugging
  • Worked on IBM mainframe systems using TSO, ISPF, IBM DB2, and VSAM
  • Collaborated on a claims processing system built with COBOL-II, VSAM, and IBM DB2
  • Jefferson City, MO

Senior Application Developer / Consultant / Lead

Edward Jones / ED Jones
02.2015 - 12.2015
  • Company Overview: Maryland Heights, MO
  • Developed CTG (COBOL-II/IBM DB2/IMSDB) jobs triggered by the web
  • Wrote, tested, and implemented CTGs into production, focusing on mainframe work, utilities, JCL, and PROCs
  • Created custom driver programs to test CTGs and ensure functionality
  • Followed the SDLC methodology for structured development and delivery
  • Developed several IMS/DB batch programs to navigate and interact with IMS databases
  • Maryland Heights, MO

Senior Consultant

Practical Transitions
12.2014 - 01.2015
  • Company Overview: South Bend, IN
  • Worked as part of a team based in South Bend, while remotely located in St
  • Louis
  • Assigned to convert Easytrieve jobs into COBOL-II jobs for improved performance
  • Downloaded and uploaded work using NDM, ensuring efficient file transfer
  • Utilized Expeditor for testing and debugging COBOL-II jobs
  • South Bend, IN

Senior Application Developer / Consultant

Edward Jones
06.2014 - 11.2014
  • Company Overview: Maryland Heights, MO
  • Developed a new system that runs after statement generation to ensure accuracy and compliance
  • Managed the Statement Reconciliation System based on SEC Rule 17A-5, verifying positions and comparing statements with Edward Jones financial books by extracting data from master files
  • Created and maintained flowcharts using MS-Project for system design and process management
  • Utilized IBM Mainframe, COBOL-II, QSAM, VSAM, and CICS for debugging and program execution
  • Employed CA-Interest for batch processing, CICS, and CICS screen management
  • Wrote three programs following SDLC methodology for system development and integration
  • Used NDM to transfer data from Excel spreadsheets to the Mainframe for processing and reconciliation
  • Maryland Heights, MO

Senior Application Developer / Consultant

TCC Software Solutions / Maryland Government
11.2013 - 05.2014
  • Company Overview: Indianapolis, Ind
  • Worked as part of a team on a maintenance contract for the Maryland government
  • Collaborated remotely from Indianapolis with a team based in Maryland
  • Managed work involving Batch COBOL-II, IBM DB2, VSAM, sequential files, JCL, and PROCs
  • Utilized Expeditor for unit testing to ensure quality and functionality of code
  • Communicated regularly with the client by telephone to discuss changes, report issues, and address project requirements
  • Indianapolis, Ind

Senior Application Developer / Systems Analyst MMIS

Blue Cross Blue Shield of South Carolina
10.2012 - 08.2013
  • Company Overview: Columbia, SC
  • Interviewed other teams, examined programs, and worked with data to understand system requirements
  • Independently handled 29 PROCs, JCLs, 30 reports, and set up 13-14 IBM DB2 tables for the West region
  • Added code in cloning situations to ensure system functionality and accuracy
  • Managed the West region's production environment, addressing and resolving only a few minor issues
  • Led software development efforts following the SDLC methodology for a Medicaid claims processing system
  • Ensured smooth claims processing for Medicaid participants, maintaining system integrity and efficiency
  • Columbia, SC

Lead Programming Analyst Advanced

Comptroller of Maryland
06.2012 - 10.2012
  • Company Overview: Annapolis, MD
  • Annapolis, MD

QA Analyst

RR Donnelly
10.2011 - 02.2012
  • Company Overview: Thurmont, DE
  • Thurmont, DE

Mainframe Developer

Wachovia, Wells Fargo
08.2010 - 08.2011
  • Company Overview: Pennsylvania, PA
  • Pennsylvania, PA

Mainframe Developer

Merrill Lynch
01.2010 - 07.2010
  • Company Overview: Hopewell, NJ
  • Hopewell, NJ

Mainframe Developer

Health and Hospital Corp
03.2008 - 01.2010
  • Company Overview: New York, NY
  • New York, NY

Mainframe Developer

Medco
01.2007 - 12.2008
  • Company Overview: Franklin Lakes, NJ
  • Franklin Lakes, NJ

Mainframe Developer

Bessemer Trust
03.2006 - 12.2006
  • Company Overview: Woodbridge, NJ
  • Woodbridge, NJ

Mainframe Developer

Merrill Lynch
10.2005 - 02.2006
  • Company Overview: Jersey City, NJ
  • Jersey City, NJ

Project Leader / Mainframe Developer

Merrill Lynch
01.2004 - 10.2005
  • Company Overview: Jersey City, NJ
  • Jersey City, NJ

QA Tester

Mellon HR Solutions
12.2002 - 11.2003
  • Company Overview: Uniondale, NY
  • Uniondale, NY

Project Manager

Metro Graphics Printing
12.2001 - 11.2002
  • Company Overview: Fairfield, NJ
  • Fairfield, NJ

Education

Bachelor of Arts -

Queens College
Queens, N.Y
01.1979

Associates of Applied Sciences - Data Processing

Queensborough Community College
Bayside, N.Y
01.1974

Skills

  • MS Office
  • MS Project
  • Visio
  • Cobol-II
  • COBOL
  • VSAM
  • CICS
  • CICS Screens
  • DB2
  • CSF
  • AFP
  • JCL
  • Procs
  • Ez-Letter
  • IDMS
  • IMS/DL1
  • Eztrieve
  • Endevor
  • Intertest
  • Spufi
  • Omniplan
  • Omniplan Plus
  • MS-Access
  • SQL
  • NDM
  • Supertracs
  • File Aid
  • Xpediter
  • SynchSort
  • MQ_Series
  • Changeman
  • Hogan CIS
  • Document Composition Facility
  • Install/1
  • Code/1
  • Panvalet
  • SDLC
  • Agile
  • Waterfall
  • Telon code Generator
  • IBM Rational Developer
  • CA-Topaz
  • DevOps
  • Continuous Integration
  • Continuous Delivery
  • IBM-360
  • IBM-370
  • IBM-3090
  • PC’s
  • Duplex
  • Simplex Printers
  • Mainframes
  • DOS/VSE
  • OS/MVS
  • Zos
  • PC-DOS
  • TSO/ISPF
  • MS-WIN 95
  • MS-WIN 98
  • MS-WinNT
  • MS-WinXP

Additional Information

MS Office (Word / Excel / PowerPoint / Outlook), MS Project, Visio, Cobol-II, COBOL, VSAM, CICS, CICS Screens, DB2, CSF, AFP, JCL, Procs, Ez-Letter, IDMS, IMS/DL1, Eztrieve, Endevor, Intertest, Spufi, Omniplan, Omniplan Plus, MS-Access, SQL, NDM, Supertracs, File Aid (DB2 / IMS / file-aid for sequential files), Xpediter, SynchSort, MQ_Series, Changeman, Hogan CIS, Document Composition Facility (DCF/Script/VS), Install/1, Code/1, Panvalet, SDLC, design to development to QA to Production, support, Agile, Waterfall, Telon code Generator, IBM Rational Developer (RDz / IDz), CA-Topaz, DevOps in an Agile environment, Continuous Integration, Continuous Delivery, IBM-360, IBM-370, IBM-3090, PC’s, Duplex, Simplex Printers, The latest Mainframes as well, DOS/VSE, OS/MVS, Zos, PC-DOS, TSO/ISPF, MS-WIN 95, MS-WIN 98, MS-WinNT, MS-WinXP

Timeline

Mainframe Tech Lead

Manutek
11.2023 - 01.2024

Cobol Consultant

GDH Corporation / Blue Cross Blue Shield of Alabama
05.2022 - 05.2023

Batch Developer / Consultant

General Dynamics Info Tech / Eliassen
11.2021 - 01.2022

Mainframe Developer / Cobol Programmer

Consultant, Zions Bank
08.2020 - 08.2021

Mainframe Developer / Cobol Programmer

Matrix Resources / Principal Ins
07.2020 - 08.2020

Senior Software Engineer

Epam Systems
02.2019 - 01.2020

Senior Cobol Application Developer

Talentburst
03.2018 - 12.2018

Senior Application Developer / Consultant MMIS / Medicaid / Lead

InfoCrossing Health
02.2016 - 01.2018

Senior Application Developer / Consultant / Lead

Edward Jones / ED Jones
02.2015 - 12.2015

Senior Consultant

Practical Transitions
12.2014 - 01.2015

Senior Application Developer / Consultant

Edward Jones
06.2014 - 11.2014

Senior Application Developer / Consultant

TCC Software Solutions / Maryland Government
11.2013 - 05.2014

Senior Application Developer / Systems Analyst MMIS

Blue Cross Blue Shield of South Carolina
10.2012 - 08.2013

Lead Programming Analyst Advanced

Comptroller of Maryland
06.2012 - 10.2012

QA Analyst

RR Donnelly
10.2011 - 02.2012

Mainframe Developer

Wachovia, Wells Fargo
08.2010 - 08.2011

Mainframe Developer

Merrill Lynch
01.2010 - 07.2010

Mainframe Developer

Health and Hospital Corp
03.2008 - 01.2010

Mainframe Developer

Medco
01.2007 - 12.2008

Mainframe Developer

Bessemer Trust
03.2006 - 12.2006

Mainframe Developer

Merrill Lynch
10.2005 - 02.2006

Project Leader / Mainframe Developer

Merrill Lynch
01.2004 - 10.2005

QA Tester

Mellon HR Solutions
12.2002 - 11.2003

Project Manager

Metro Graphics Printing
12.2001 - 11.2002

Bachelor of Arts -

Queens College

Associates of Applied Sciences - Data Processing

Queensborough Community College

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