EXPERIENCE:

Radus Software, 1950 Roland Clark Place Suite 430 Reston, VA 20191 (703) 891-1892 (2/2023-present)

Maintained IRS programs written in HLASM

Atid/2, 4963 Oriskany Drive Annandale, VA 22003-5141

Enhanced BW whois Perl script and ported it to OS/2.
Wrote Perl script to deobfuscate e-mail and to analyze it.

Sidhu Associates, Inc., Executive Plaza III, Suite 1000 11350 McCormick Road Hunt Valley, MD 21031-1044 (8/2007-12/2010):

For Maryland Department of Public safety Correctional Services (DPSCS):

Converted from IMS V6R1 to IMS V8R1
Provided postinstall support for IMS V8R1
Installed new release of TMON for MQseries

For Washington Suburban Sanitary Commission (WSSC):

Provided support for z/OS migration

For Maryland Department of Public safety Correctional Services (DPSCS):

Upgraded OEM software in support of z/OS migration

Digital Solutions, Inc., 21165 Whitfield Place, Suite 206, Sterling, VA 20165 (5/98-7/2003):

For USCS:

Monitored status of system and responded to abnormal events
Provided backup for Help desk on issues they were unable to resolve
Wrote ISPF dialog to display space available for expansion of an HFS dataset.

For NSF:

Provided backup for Help desk on issues they were unable to resolve
Provided miscellaneous support of archiving, backup and restore software from Innovation Data Processing,including configuration and housekeeping for ABR and user requested archives and restores
Wrote miscellaneous utilities in Perl
Provided systems support for MVS/ESA and OS/390
Planned for migration from MVS/ESA to OS/390
Upgraded MVS/ESA and related software for Y2K compliance.

Electronic Data Systems, 13600 EDS Drive, Herndon, Virginia 22071 (3/97-5/98):

Provided security analysis for MVS/ESA and OS/390
Provided systems support for MVS/ESA and OS/390.

Unisys, 8008 Westpark Drive, McLean, Virginia 22102 (9/93-3/97):
(Unisys took over the US DOE, EIA support contract from EDS.)

Electronic Data Systems, 13600 EDS Drive, Herndon, Virginia 22071 (5/90-9/93):

Provided systems support for MVS/ESA (MVS/SP 4.3, DFP 3.3, TSO/E 2.4, ISPF and ISPF/PDF 3.5)
Provided systems support for MVS/XA (MVS/SP 2.2, DFP 2.4, TSO/E 2.1, ISPF 3.3 and ISPF/PDF 3.4)
Studied conversion issues for MVS/ESA
Assisted in the conversion from MVS/XA to MVS/ESA
Supported LAN and PC groups in the use of SAA REXX on OS/2
Supported the Electronic Publishing group in developing local enhancements and modifications to the BookMaster® tag set
Refitted local modifications from SuperWylbur® 3.8 to 4.1 and to 4.2
Performance monitoring and modelling with MXG, RMF, OMEGAMON and BEST/1
Wrote and enhanced TSO commands and SPF facilities
Wrote miscellaneous utilities
Refitted local modifications from ISPF 2.3 to 3.3 and ISPF/PDF 2.3 to 3.4 and to 3.5
Refitted local modifications from TSO/E 1.4 to 2.1 and to 2.4

LOGICON, INC., 2100 S. Washington Boulevard, Arlington, Virginia 22204-5704 (6/85-5/90):

Senior designer/programmer in the prototype development of the Integrated Simulation Assessment of Air base Capability (ISAAC) model, an 80286/MS-DOS based Monte Carlo discrete event simulation model. ISAAC is written in Ada and makes extensive use of Ada generics and strong typing
Redesigned critical ISAAC data structures in order to remove performance bottlenecks
Directed the conversion of low-level graphics subroutines in ISAAC from real mode to protected mode
Rewrote one of the critical graphics subroutines in ISAAC, reducing the time required to initialize from minutes to less than a second. This performance boost was achieved despite the fact that the original routine was written in assembler and the new one in Ada
Senior designer/programmer for the Terminal Virtual (TV) CPC in SAFE Delivery 2. SAFE is an online information system that incorporates message switching, real-time document dissemination, electronic mail, textual database management and specialized workstations in an integrated electronic office environment. Supporting thou sands of users, the system employs multiple 3090 and 308x processors operating under VM/SP HPO and MVS/XA. Interactive computing is performed under CMS while MVS is used for real-time document dissemination and database maintenance. Logicon's portion of the SAFE system consisted of over 750K lines of IBM Assembler (H) source code that interfaced with another 1 million lines of code from other vendors. TV is the end-user interface for SAFE, and is written in Assembler (H) and REXX. It interfaces with a government-built office automation system, and also makes limited use of the under lying CMS environment of VM/SP Release 4
Enhanced existing TV modules and developed new AIM Import/Export Virtual (AIEV) and TV modules for SAFE Delivery 3
Located and reported errors in government software that Logicon software uses and, in several cases also supplied corrective code
Assisted in the resolution of problems in the MVS/XA portions of SAFE
Designed and coded portions of the new Terminal Manager (TM) for SAFE Delivery 3.5, especially those portions requiring a detailed knowledge of 3270 data streams and IBM access methods. Participated in design and code reviews for all modules of the new TM.

CHASE, ROSEN, AND WALLACE, 901 N. Washington Street, Alexandria, Virginia 22314
(now part of Logicon; see above)

SYSTEM DEVELOPMENT CORPORATION, 1755 Old Meadow Road, The Systems Group, McLean, Virginia (9/84-6/85):

Provided advice and consulting on IBM hardware (308x) and software (MVS/XA and related software) to the SDC personnel concerned with the SEA WATCH III subsystem of the IAIPS project
Served as Team Leader for the System Support CPCI of SEA WATCH III.

PINKERTON COMPUTER CONSULTANTS, INC., 1900 N. Beauregard Street, Suite 200, Alexandria, Virginia 22311 (1/82-8/84):

Designed SNA support for a protocol translator
Studied the feasibility of attaching an IBM 4341 to E-bus, a proprietary local-area network, and proposed several different implementation options. Consulted with the personnel at Melpar E-Systems who were tasked with implementing the interface. Provided briefings and training on SNA in support of this project
Wrote SAS code to process employee performance data for the US Marshall's Service
Supported MVS/SP 1.1 on 370/158 AP at the US State Department, in conjunction with other contractor and State Department personnel
Measured performance using RMF and CMF, and tuned the system
Installed IPO 3.8H (MVS/SP 1.3.1 with DF/DS, RMF, and SAM-E) for 4341
Installed Yale DBC (Debug Controller)
Installed DF/DS 1.1.5, MVS/SP 1.3.1, NCCF, NPDA, TSO/E, DSF 6, and EREP 1.3 on IPO 3.8H
Upgraded local modifications and utilities from SP1.1.0 level to SP1.3.1 level, including JES2
Wrote job separator exit for JES2 component of MVS/SP 1.3.1
Installed and modified various utilities from the CBT tape, and merged modifications from several versions of QUEUE.

COMNET, COMPUTER NETWORK CORPORATION, 5185 MacArthur Boulevard, Washington, D.C. 20016 (10/79-1/82):

Designed and implemented modifications to OS/VS2 MVS R3.8, including JES2/NJE, TSO/TCAM, and TSO/VTAM
Maintained MVS, including diagnosing problems from dumps, developing fixes, installing IBM (PUT and RETAIN) and local fixes, collecting and generating supporting documentation for APAR submission, reporting errors to IBM, and installing a new IPO (including installation of service, program products, and functional units not preinstalled on the IPO)
Provided assistance to the SMP technician once the new IPO was turned over for production
Prepared a position paper on a new maintenance strategy
Prepared a comparison of TCAM, ACF/TCAM, VTAM, and ACF/VTAM
Prepared an analysis of forthcoming software from IBM: MVS/SP, DF/DS, and DF/EF
Provided user assistance for problems beyond the scope of customer support
Enhanced various programs to support MVS, MVS/SE2, and SAM-E
Provided MVS expertise to other members of the Systems staff
Installed TSO/VTAM for local display devices, and modified local TSO commands to work in both TCAM10 and VTAM2 environments
Analyzed the requirements for converting a Xerox 9700 non-impact printer from off-line to online mode.

SIGMA DATA SERVICES CORPORATION, (12/77-10/79):

Maintained OS/VS2 SVS and HASP II V4.1 for the Goddard Modelling and Simulation Facility (GMSF) at the Goddard Space Flight Center (GSFC)
Modified HASP to support VMF/370
Modified EXHIBIT CRT package to support VM environment
Maintained VMF/370
Modified CP component of VMF/370
Managed Systems Group
Supported telecommunications requirements
Assisted in ongoing conversion from SSS/360 to OS/VS2 SVS
Wrote large sections of an RFP for a large high-speed array processor.

COMTEN, 3 Choke Cherry Road, Rockville, Maryland 20850 (7/77-10/77):

Provided MVS support for SCERT project.
Revised installation procedures for ALERT to allow it to be installed via SMP.

AMERICAN MANAGEMENT SYSTEMS, 1901 North Moore Street, Arlington, Virginia (6/76-6/77):

Designed and implemented enhancements to EXHIBIT CRT Display Package, including support for OS/VS2.
Generated NCS for Memorex 1380 (front-end system used as 270x simulator).
General systems programming support for OS/360 MVT, and planning for OS/VS2.

TAUB COMPUTER CENTER, TECHNION, ISRAEL INSTITUTE OF TECHNOLOGY, Technion City, Haifa, Israel (4/73-5/76):

General systems support for OS/360 MVT and OS/VS2 SVS.
Designed and implemented PL/I callable subroutines in Assembly Language, for functions not directly possible in PL/I.
Taught several systems courses, provided technical guidance for several student projects, maintained and enhanced the Waterloo SCRIPT package.
Provided systems support for TSO/TCAM in both MVT and SVS. This included writing commands, providing technical guidance relative to the MCP and to new commands, and directing a retrofit of major portions of MVS 3.6 TSO into SVS.
Planning for conversion to OS/VS2 MVS.
Conversion from MVT to OS/VS2 SVS.

PINKERTON COMPUTER CONSULTANTS, INC.

Performed Analysis and programming required to enhance the Authorized Jail List System for the Federal Bureau of Prisons.
Simulation of CPU for FFT on UNIVAC 1230.
Systems support for a multi-computer real-time system, including a "microprogrammed" processor.
Simulation of a modified IBM 2780 on an IBM S/360, using OS/360 BTAM.
Performed systems support for OS/360 MVT at The Equitable Life Assurance Society, including local modifications.

COMPUTING CENTER, STATE UNIVERSITY OF NEW YORK AT BUFFALO, Amherst, New York (9/68-2/70):

Conducted a DOS-to-OS conversion effort at a large university computing center, with an IBM 360/40H and a CDC 6400. Developed Enhancements to ATS/DOS. Provided user assistance in DOS and SCOPE.
Wrote several enhancements to the SCOPE operating system for the CDC 6400.

UNITED STATES ARMY, (1/66-1/68):

Designed and developed a program written in IBM DOS/360 Assembly Language to automatically translate pro grams from UNIVAC 1005 Assembly Language (SAAL) to IBM DOS/360 Assembly Language. I was given an award for this program under the Army suggestion program.
Developed and maintained miscellaneous programs for the UNIVAC 1005.

MASSACHUSETTS COMPUTER ASSOCIATES, INC.,
(purchased by ADR during the period of my military service)

APPLIED DATA RESEARCH (4/65-4/70):

Designed and implemented a proprietary on-line information storage and retrieval system (PDQ) on an IBM 360/40H under OS/360 MFT. This system was written in Assembly Language and designed to interface with PL/I programs.
Participated in an Information Retrieval System for the Army Research Office, written in OS/360 COBOL (F). Wrote the I/O package in Assembly Language.
Performed a feasibility study and preliminary design for a project to allow execution of programs written for the IBM 360 Disk Operating System (DOS) under the IBM 360 Operating System (OS), and to allow 1401 and 1410 emulators to run under OS.
Participated in the development of an in-house Information Retrieval System.
Performed systems support of IBM OS/360 (PCP, MFT II, and MVT) for a computer service center with a 360/40G and a 360/50I. This included generating and maintaining OS, HASP (for both MFT II and MVT), and ATS/OS (Administrative Terminal System), making local changes, locating and correcting system errors, and evaluating hardware errors. It also included operator training and customer assistance in such areas as JCL, interpreting dumps, efficient multi-programming techniques, and debugging techniques. Wrote SMF (System Management Facility) exits and SVC (Supervisor Call) routines for OS/360 MVT.
Designed, developed, and maintained portions of the BNX (Bell Nike-X) operating system for the IBM 7094. This included maintenance of the basic system; debugging and maintenance of the data base facilities of the system; and design, implementation, debugging and maintenance of the input/output facilities for the IBM 1301 disk file. Included in the disk I/O package were:
- the ability to do all I/O by name without concern for physical device characteristics.
- the ability to maintain a glossary of strings and to refer to them by a one-word abbreviation.
- the ability to efficiently simulate magnetic tapes on the disk file.
Included in the maintenance of the data base facilities was coordination with the CL-II project to ensure that all errors in the data base facilities of the two systems were corrected in an identical fashion.

RADIO CORPORATION OF AMERICA, ELECTRONIC DATA PROCESSING, Building 204-2, Cherry Hill, New Jersey (1/64-4/65):

Designed and implemented a new version of the Interrupt Analyzer/Task Selector for the RCA 3301 Operating System, to provide synchronization primitives required for multiprogramming.
Designed and implemented the Device Assignment routine for the RCA 3301 Operating system.
Participated in the design and development of the FCP (File Control Processor) on the RCA 3301, including software for a random-access, mass storage device (RCA 3488).
Participated in the design and implementation of the Rerun/Restart facilities of the RCA 3301 Operating System.

COMPUTING AND DATA PROCESSING CENTER, WAYNE STATE UNIVERSITY, Detroit, Michigan (4/60-12/63):

Designed, developed, and maintained an integrated set of programs to perform billing for the computing center, and generated several related reports, using IBM 7070 AUTOCODER.
Modified and maintained statistical programs in IBM 7070 Full FORTRAN.
Implemented a set of subroutines in IBM 7070 AUTOCODER to perform matrix arithmetic for FORTRAN programs.
Modified a set of double precision and complex arithmetic subroutines to allow their use by the TASSGATE compiler on the IBM 650.
Maintained the GATE compiler on the IBM 650. Made several changes to the relocatable loader.