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Senior Mainframe COBOL & API Solutions Engineer

Location:
Rising Sun, MD
Posted:
December 16, 2025

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Resume:

Name: Thomas Mulligan (Lead Technical Staff)

Position: Application Engineer Senior

Years Supporting OCSS Program: 7+

Education

•Associate in Science, Computer Programmer, New England Institute of Technology, 1991 (Honor Grad)

Certifications/Training

•Basic Electronic, Tampa Tech, 1979; US Navy, 1981; Anti-Submarine Air Controller

•IBM WebSphere 8.5 for Developers Training 2015.

Awards

•Navy Commendation Medals, Bravo Awards, Center Stage Awards

Relevant Experience

•Have 30+ years of IT experience.

•Maintained large, mainframe COBOL, DB2 systems.

•Designed enhancements for GUI and mainframe systems.

•Participated in architectural review boards for technology research & solutions.

•Participated in business analyst boards for requirements gathering.

•Provided production support for mainframe CICS, COBOL applications.

Work History

Leidos Inc.

Application Engineer

2017-Present

•Operations & Maintenance Enhancement Projects

•Production Operations Support

•COBOL / DB2 Systems Maintenance and Operations

•Supported strategic development for COBOL to Java Script living html documents

•Innovation Ambassador

•Working on conversion to AWS, Amazon Q and python applications

Lockheed Martin

Application Engineer

2016 – 2017

•COBOL Systems Maintenance and Operations

•Supported strategic development for COBOL to Java migration

First Data Merchant Services

Programmer – Senior Architect – Manager

1998 – 2016

•Supported all life cycles of projects for Mainframe and off-host applications.

•Managed 2 critical path applications and 3 non-critical applications.

•Managed on-shore and offshore development teams 18 full time staff.

•Converted assembler programs to COBOL II.

•Supported various areas for data center consolidation.

Wool Worth Inc.

Programmer

1996 – 1998

•Converted mainframe application to DB2 application.

Postal Service Express (PSE)

Supervisor

1994 – 1996

•Created programs for scanners and used scanners to load code from bar codes.

•Supervised all operation of hub operations for Postal Service

US Navy

E1-E7 OSC

1981 – 1994

•Performed seaman duties as Chief Operation Specialist, managing combat information centers.

•Was a qualified Anti-Submarine Air Controller (ASAC).

•Received Navy Commendation Metal for development and documentation of Data Access Program (DAP) while supporting two departments at the Naval War College, RI.



Contact this candidate