Mainframe Developer Computer Programmer
Resume:
DUNG LY
Mainframe Developer
CURRENT SITUATION
After a long break, I am looking for a job.
In 2018, I retired from the NFCU and traveled, sight scenes for about 2 years. Then I had to stop traveling due to Covid 19 situation, stayed home, and worked on my garden. That was nice but I missed work. I want to go back to work.
Think about back to work, my 30 years plus of experience in mainframe applications development, from design to coding, testing, implementation, and support vividly came up. Cobol is one of my favorite computer languages. I started coding Cobol in the year 1978 with Commercial Credit bank in Baltimore. It was the reported programs, pretty simple. Later on, I had to deal with 1-dimensional, 2-dimensional, and then 3-dimensional. It was exciting. I continued exploring and working with any computer languages, Fortran, Assembler, Cobol, RPG… whichever languages were required for the jobs. I could train myself and go on from there. I worked with financial banking, loan, and ledger applications to insurance annuity, to the secondary mortgage market, and back to banking/credit union.
Among the companies that I worked for, the Navy Federal Credit Union is the company that gave me so many different types of experience.
Please my resume work history from 1980 to 1985 (Navy Federal Credit Union - Programmer Analyst) I participated in the project IBM - DOS (Disk Operation System) to MVS (Multiple Virtual Storage) conversion. I had to work with so many JCL, and Procs, create them on the test side, test after test, and backup/restore files constantly. 95% code is written in Cobol, and about 5% code is Assembler.
During this period NFCU used “Total_Database” which later on was replaced by the VSAM file. I had a chance to learn the VSAM file and gain a lot of working experience with it.
I left the NFCU in the year 1985 and I returned the year 2006, the company tripled its employees and continued to grow. I have been assigned to work on various projects (please see my tasks from 2006 to 2018). While working on these tasks, I quickly learned ChangeMan. It’s a source code manager in the z/OS mainframe. The existing applications are still used VSAM files for data storage but some new applications were created with the DB2 database. This was my chance to learn DB2 and worked with it.
My best skill is ‘self-training’. I was able to learn it from the book, looked at the program source codes, and figured out what needs to be done,
I started from a difficult situation, like learning the Assembler computer language, and learning how to read the ‘Dump codes’ from the computer to identify the error. That was not easy. I also remember I worked with a database where I had to keep track of the address value of that record and add its record length to locate the next record. But the road is getting easier for me.
CONTACT
PHONE:
EMAIL:
*********@*****.***
PROFESSIONAL SUMMARY
Over 20+ years of IT professional experience with sound knowledge of Analysis, programming, testing, and problem-solving in IBM Mainframe(Z/OS), MVS MVS/ESA OS/VS, and TSO ISPF/PDF environments.
Experienced in the analysis, design, and development of COBOL, JCL, DB2, VSAM, CICS, IMS/DB, SQL, and the tools ChangeMan, SYNCSORT, FILE-AID, IDCAMS, and strong knowledge of Job Scheduling tools CA7
Proficiency at various levels of application development, i.e., in requirement analysis, analysis and design, system and integration testing, implementation, and documentation.
Experienced in Batch and online programs debugged using Intertest and File-aid. Developed Test Plans and participated in the thorough unit, system, and regression testing through production implementation.
Involved in User Acceptance Testing and provided 24/7 maintenance and production support to Mainframe applications.
WORK EXPERIENCE
Navy Federal Credit Union - Senior Systems Analyst
11/2006–06/2018
Technical lead to developing a new Automate Loan Processing Decision System. Building programs interface between General Ledger and Abandon Property application. Automate the check-clearing process. including the tasks below.
* Meeting with the development team, branch managers, users, and loan officers.
* Gather users’ requirements
* Participate with the supervisor/manager to plan and list the required tasks.
* Install the vendor’s original loan system.
* Develop users-required enhancements.
* Enforce NFCU standards/procedures
* Oversee programmers/analysts staff (6 in-house and 3 vendor consultants)
* Debug systems errors.
Union Labor Life Insurance - Senior Programmer Analyst
09/1987–10/2006
Maintain and Support Production Applications, including
* Tax system,
* Abandon Property system,
* General Ledger system,
* Cash Disbursement System,
* Account Payable system, Acclaim system.
* Create Interface programs between the Abandon Property system and Account Payable system.
* Develop new programs on both Mainframe and AS-400. Participate in the "Rate Change" conversion project.
* Develop "Actuary" programs for the Pension Shopmen Group system.
* Develop programs using Macro code and Microsoft Visual Basic to automate Excel spreadsheet tasks.
* Participate in conversion from Sperry Univac online programs to CICS IBM programs.
* Redesign Group Insurance system. Redesign Letter Generating function of the Cost Management system.
* Develop a Conference Room Reservation system using AS-400 Computer.
* Participate in converting the Pension system from Burroughs Computer to IBM AS-400 Computer. Expertise in analyzing, identifying, and correcting production problems.
Federal Home Loan Mortgage Corporation - Freddie Mac Senior Programmer Analyst
08/1985–08/1987
* Build an interim Tax system.
* Supervisor of the Tax team (6 programmers).
* Assigning, coordinating, and evaluating all programming activities.
* Maintain Mortgage Loan Portfolio Management System.
* Modify COBOL programs to improve execution time, including analysis of program efficiency and file structures for maximum performance.
Navy Federal Credit Union - Programmer Analyst
12/1980–08/1985
* Systems Review and Enhancement.
* Maintain six systems: Sharecheck, Unclaimed Shares, Delinquency, Payroll, Name and Address, and Special Mailing Systems.
* Support Retirement Reporting System.
* Participate in the DOS/MVS conversion and redevelop the Credit Daily Business System.
* Assist in program enhancement including writing programs in Assembler, COBOL, online CICS macro, and command levels.
SYS-COMM Inc. - Programmer Analyst
04/1980–12/1980
Develop, modify and install applications.
* Inventory system,
* Accounts Payable/Receivable system,
* General Ledger system,
* and Payroll system.
Computer Data Systems Inc. - Computer Programmer
04/1979–04/1980
Participate in developing the Utilities and Regulatory Compliance Project for the Department of Energy. The responsibilities included writing programs to edit data, updating master files, finalizing the detail listings to facilitate validation of data collection, and producing annual reports. These COBOL programs interfaced with the System 2000 database.
ARBITRON - Computer Programmer
08/1978–04/1979
Developed the Radio and Television Audience Statistic Reporting system.
Commercial Credit Corporation - Computer Programmer
04/1977–08/1978
* Supported batch applications for Loan calculation, General Ledger, Accounts Receivable, and Payroll.
* Maintained online FORTRAN programs that edited the transactions received from branch offices in various states, set up loan accounts, scheduled payments, and updated customer accounts balances. All these transactions were recorded in a real-time activity log file (RTA) and reported daily or monthly by batch programs.
* Develop batch and online programs for the Claims System, including testing, documenting, and implementation.
EDUCATION
Northern Virginia Community College
1980 – 1989 Data Processing
Associate's Required total of 92 credits, obtained 63 credits.
Technical school - Control Data Institution
1977 – 1978 Computer Operation and Programming
Certifications and Training:
Deltak Training Corporation - July 1978
• Interest
• VSAM
Department of Energy - May 1979
• System 2000 Database Access
Freddie Mac - June 1986
• Secondary Mortgage Market
ADR - September 1987
• ADR/DATACOM/DB Application
Information Systems of America - April 1993
Certificate of Achievement
• CDS DP Education Class
Learning Tree International - June 1995
• Introduction to Client/Server Computing
The Solution Works, Inc. - November 1997
• Microsoft Windows NT.
PCLC - August 1998
• Upgrade to Windows NT 4.0
SmartStream Enterprise Server - July 1998
• Business Application Software.
• Implementing Allocations.
• Management Reporter.
Convey Compliance Systems, Inc. - October 2001
• State & Local Reporting and Withholding Requirements
• TIN Compliance
• SSA Review
• Transmittals
• IRS Update
FileNet - July 25, 2005
CS System Administrator
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