Summary
Highly skilled Mainframe Developer with 6 years of experience in designing, developing, and maintaining critical business applications. Proficient in COBOL, JCL, DB2, and CICS, with a proven track record of optimizing system performance and delivering robust solutions. Adept at full SDLC, collaborating with cross-functional teams, and ensuring high availability and reliability of enterprise systems.
Experience
- Led the development and enhancement of 5+ critical COBOL batch applications, improving data processing efficiency by 15% for financial reconciliation systems.
- Optimized CICS transaction processing for a core banking system, reducing average response times by 20% and handling over 10,000 transactions per hour.
- Developed and maintained COBOL programs for airline reservation and ticketing systems, resolving over 100 production issues and enhancing system stability.
- Wrote and modified JCL scripts for various batch processing tasks, successfully processing millions of passenger records daily for flight manifest generation.
Projects
- Developed a personal REXX utility to analyze and suggest optimizations for complex JCL job streams, reducing typical execution times by 5-10%.
- Built a proof-of-concept tool in COBOL to identify and refactor common code redundancies and outdated syntax within legacy programs.
- Successfully processed and suggested improvements for over 500 lines of sample COBOL code, demonstrating potential for 15% code reduction.
- Aimed at improving maintainability and readability of large COBOL applications, reducing future debugging efforts.
- Developing a set of SQL and JCL scripts to monitor DB2 database performance metrics, including query execution times and locking issues.
- Designed to proactively identify potential bottlenecks and provide alerts for performance degradation in critical production environments.
- Incorporating data visualization capabilities using external tools for easier trend analysis.
Education
- Graduated Cum Laude with a GPA of 3.8/4.0
- Completed capstone project focused on secure data processing for legacy systems
- Recipient of the Computer Science Departmental Scholarship for academic excellence




