Virgilio C.
Mainframe Systems Programmer
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EnglishTagalog
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About
Virgilio C. is an accomplished Mainframe Systems Programmer/Engineer/Administrator with over 10 years of experience supporting enterprise IT infrastructure across banking, insurance, telecommunications, government, oil and gas, and technology services. Based in Quezon City, Philippines, he has delivered installations, migrations, upgrades, and maintenance for IBM mainframe and distributed environments, with deep expertise in z/OS, AIX, REXX, COBOL, CICS, and DB2. Virgilio has contributed to large-scale projects such as network migrations, disaster recovery simulations, data warehousing, system performance tuning, automation, and mainframe application development. His career includes roles at Infomina Philippines, IBM Solutions Delivery, Citibank Singapore, Brunei Shell Petroleum, and other organizations, handling end-to-end system administration, application modernization, and technical consulting for mission-critical business domains.
Experience
Technical Consultant, Sales
Infomina Philippines, Inc. · 2022 — 2022Provided consultancy and support for Broadcom mainframe software products, primarily for clients in the banking and insurance sectors from both private and government entities. Contributed to an Automic workload automation project across Windows and Unix platforms, and participated in the creation of Excel graphical reports detailing the Millions of Service Units (MSU) usage, which enabled software license fee calculations for the Mainframe Consumption Licensing (MCL) Program.IT Specialist - VM, MVS, AIX
IBM Solutions Delivery Inc. · 2009 — 2017Performed developer and maintenance functions for various application systems under the IBM Global Account. Engaged in monitoring operational processes, diagnosing issues, and implementing enhancements through standard change management controls. Revised codes and parameters for efficiency and maintained auto-scheduled processes using WAKEUP.System Programmer - Network
Citibank Singapore Ltd · 2006 — 2008Provided ongoing support for UAT and production network activities, including updates to VTAM resources and maintenance of TCPIP profiles. Involved in major projects such as Japan Amazon RFS Split and X.25 to HNAS Migration, and played a role in disaster recovery exercises and health checks of network resources.Systems Programmer - MVS, Network
National Computer Systems Pte Ltd · 2005 — 2006Delivered 24x7 maintenance support for Mainframe-LAN connectivity. Contributed to various disaster recovery exercises and collaborated on network support projects. Developed a CPU Monitoring system for alerting on resource thresholds.System Analyst
Southwestern Bell Corporation · 2004 — 2004Provided mainframe software consultancy focused on COBOL-DB2 programs and addressed database discrepancies. Worked on-site for knowledge transfer and responsibility handover.Research and Development Engineer
Calimlim Enterprises · 2001 — PresentOperated a family-run computer services business with responsibilities including hardware and software consultancy, rentals, and repair services. Engaged in the ongoing development of various desktop utilities and applications utilizing multiple programming languages and frameworks.Senior Systems Engineer
Brunei Shell Petroleum Company Sdn Bhd · 1996 — 2000Oversaw administration and maintenance of IBM Mainframe Services. Managed compliance with Service Level Agreements and supervised contractors. Involved in significant projects aimed at system upgrades and conversions, including Y2K compliance and CPU downsizing.Senior Systems Analyst
Brunei Shell Petroleum Company Sdn Bhd · 1995 — 1996Supported the OPEX Spearhead project and participated in a data warehousing project that involved transferring General Ledger data to an Oracle database. Assisted end-users with migrations and maintained several critical applications.System Engineer
PT Metrodata Electronics / Bank Central Asia · 1994 — 1994Assisted in planning and implementing a 3-way GRS/XCF Sysplex fully connected ring, including designing a 2-way Sysplex for remote sites.System Programmer
Ministry of Interior · 1993 — 1994Provided primary support for OMEGAMON products, conducting capacity management and performance monitoring. Delivered training on OMEGAMON MVS Realtime Monitoring.Lead Systems Programmer
Ministry of Finance and National Economy · 1989 — 1993Transitioned from Application Developer to Technical Support Group. Led the migration project to new mainframe systems and coordinated installations and maintenance of MVS environments.System Analyst
Procter & Gamble Philippines, Inc. · 1989 — 1989Supported the development of a Payroll System, advising developers on COBOL-CICS techniques and assisting in CICS table maintenance and programming.Senior CSC Information Specialist - Systems Analyst
Metropolitan Waterworks & Sewerage System · 1987 — 1989Provided development support for various online and batch application systems, managing utilities and maintaining system and user files, libraries, and databases.Computer Programmer
Saline Water Conversion Corporation · 1986 — 1987Enhanced various application systems in COBOL and developed utility programs in Assembler. Involved in re-writes and migrations.Systems Analyst
Metropolitan Waterworks & Sewerage System · 1982 — 1986In-house development support writing extensive COBOL-CICS online and plain COBOL batch programs.
Skills & Expertise
Education
- Bachelor of Science in Civil EngineeringManuel L Quezon University · 1976 — 1981
- Electronics Service TechnicianAsian Institute of Applied Electronics · 1975 — 1976
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