David W. Astemborski
13146 W. Green Mountain Dr
Lakewood, CO 80228
(303) 901-8216
email: astemdw@gmail.com
astemdw@gmail.com M: 303.901.8216
Career Summary
An innovative, results-driven zOS/MVS/VM/VSE Mainframe Operating Systems Programmer with over 15 years of experience in the execution of cost-effective, high performance technology solutions serving the manufacturing, engineering, financial, health care, retail, and hospitality industries. Skilled in all facets of information life cycle management; from analysis and design through development, implementation, documentation and user training. A highly self motivated, technology evangelist and technical team leader who consistently offers creative problem-solving solutions, with results that exceed business and customer expectations.
VISA Inc. , Highlands Ranch CO 2013 – PRESENT
Senior z/OS Systems Programmer, z/OS, MVS, Operating Systems Software and Networking Engineering.
Installed and Support z/OS 2.1 running in four parallel sysplexes and over 45 LPARs. Installed, Customized, and Supported Networking software, including IBM's Connect Direct, CA's NetMaster, CA's NetSpy and IBM Enterprise Extender. Responsible for the support and maintenance of the z/OS operating systems (2.1), and several third party Networking and Systems software products.
FirstBank Data Corporation, Lakewood, CO 2009 – 2013
Senior z/OS Systems Programmer, z/OS,MVS, Operating Systems Software Specialist.
Installed and Maintain z/OS 1.10 running in three LPARS, replacing z/OS 1.09. Installed GRS, DB2. Responsible for the support and maintenance of the z/OS operating systems (1.12), GRS, Virtual Tape, Capacity monitoring, DB2, and all Mainframe Printing software, including IBM’s InfoPrint Server, Transforms, and AFP/PSF.
DELTA DENTAL OF MICHIGAN, Lansing, MI 2008 – 2008
Senior z/OS Systems Programmer, MVS, z/OS, Networking, and Oracle/Sun/StorageTek Software Specialist.
Provided 3rd party Mainframe software implementation of current releases of MVS-Quickref, Syncsort for z/OS, and
CA-NetSpy using SMP/E. Supported CA-1, HSC, CA-VTAPE, CA-CopyCat, and assisted with migration analysis of z/OS 1.9 & z/OS 1.10, including the migration from an IBM z/890 to an IBM System Z10 processor.
Sun Microsystems/StorageTek, Louisville/Broomfield, CO 1999 –2008
z/OS Systems Programmer / Infrastructure Software Engineer, z/OS, MVS, TCP/IP, and SL8500 Software Specialist.
Managed the installation, support, performance tuning, and maintenance to Systems software / hardware in the areas of MVS, z/OS, TCP/IP, and VTAM/NCP Products (IBM, CA, and NSC). Also assisted in the installation of MVS third party / OEM system software products, specializing in the Oracle/Sun/StorageTek Host Software. Worked with Operating systems releases of OS/390 2.4 – z/OS 1.9.
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METAMOR TECHNOLOGIES/COMSYS, INC., St. Louis, MO 1998 – 1999
MVS Systems Programmer Consultant, MVS, OS/390, Networking Team 1999
Managed the installation, support, tuning, and maintenance to Operating Systems software in the areas of MVS, OS/390, MQSeries, and VTAM/NCP for client company Sherwin-Williams: Cleveland, OH. Also assisted in the installation of Third party MVS software products.
MVS Systems Programmer Consultant, MVS, OS/390 Team 1998 – 1999
Managed the installation, support, and maintenance to MVS Operating Systems software in the areas of OS/390, DB2, CICS, MQSeries, and Mainframe Networking (TCP/IP) for client company Smurfit-Stone Container Corp.: Alton, IL. Also assisted in the installation of Third party MVS software products.
CHANEY SYSTEMS, INC., Milwaukee, WI 1997 –1998
MVS Systems Programmer Consultant, CICS/IMS/DB2/Networking
Oversaw the installation, support, and maintenance to MVS Systems software in the areas of IMS, DB2, CICS, and Mainframe Networking for Client company Rockwell Automation: Milwaukee, WI.
INFORMATION SYSTEMS SERVICES GROUP, St. Louis, MO 1997
MVS/VM/VSE VTAM/SNA Systems Programmer Consultant
Managed installation, support, and maintenance to MVS Systems software supporting multiple VSE/SP machines, multiple VM/ESA machines, and a corporate wide VTAM/NCP/SNA Communications Network for client company Monsanto Chemical, Corp. St. Louis, MO.
MANAGED PRESCRIPTION SERVICES, St. Louis, MO 1995 – 1997
VSE/VM Systems Programmer
Managed the installation and maintenance to existing systems software packages in multiple VSE/ESA machines running under VM/ESA.
MEMORIAL HOSPITAL, Belleville, IL 1987 – 1995
VSE/VM/OS400 Systems Programmer
Managed the installation and maintenance to existing systems software packages in multiple VSE/ESA machines running under VM/ESA. Also responsible for installation and maintenance of OS/400 systems software including VSE/ESA to OS/400 communications via a 3174 communications controller.
other related experiences
UNITED STATES COAST GUARD, Scott Air Force Base, IL
Credit Systems Inc., St. Louis, MO
Famous Barr (May Department Stores), St. Louis, MO
Electronic Data SYSTEMS (EDS), St. Louis, MO
Telemark Lodge, Cable, WI
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EDUCATION
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