Gazanfar Gaffar
MAINFRAME DEVELOPER
Jaipur
Summary
Results-driven Mainframe Developer with 4 years of experience at TCS, specializing in COBOL, JCL, DB2, CICS, and VSAM on IBM z/OS. Proven track record in Core Banking Systems (CIBIL, NPA, Loan Processing, ATM, DMR), with achievements including 20% faster batch processing, 40% reduction in manual reporting effort, and 100% SLA compliance for high-severity issue resolution. Adept at delivering scalable, defect-free solutions and driving business growth through process automation and technical expertise.”
Overview
4
4
years of professional experience
Work History
System Engineer (Mainframe Developer)
Tata Consultancy Services
12.2021 - Current
- Designed and delivered COBOL-JCL batch and CICS online applications for Core Banking modules (CIBIL, NPA, DMR, Loan Processing) with zero post-production defects.
- Built compliance-driven solutions for PMSY/PMJY amendments, PACS integration, and reporting, ensuring regulatory adherence and business adaptability.
- Optimized DB2 queries and restructured VSAM files, improving transaction throughput and reducing batch runtime by 20%.
- Automated reporting workflows through JCL based batch job automation, cutting manual effort by 40% and boosting efficiency by 30%.
- Developed reusable, stable components that strengthened system reliability and minimized recurring failures across banking applications.
- Drove Agile delivery cycles in collaboration with QA and Business Analysts, shortening release timelines by 15% and reducing defect leakage.
- Delivered multiple enhancements and modules in parallel, consistently meeting deadlines and maintaining high-quality, defect-free outcomes.
- Applied strong problem-solving and root cause analysis during development and testing phases, ensuring system stability and minimizing production issues.
Education
M.Tech - Electronics & Communication
Chandigarh University
Chandigarh, India01.2023
B.Tech - Electronics & Communication
SNDT Women's University
Mumbai, India01.2021
Higher Secondary - Science
Govt GHSS
Srinagar, India 04.2001 -
Skills
COBOL programming
JCL expertise
CICS development
File-aID tool
Changeman tool
TSO and ISPF usage
CA-7 scheduling
Xpediter debugging
CA-11 scheduling
Control-m scheduling
Assembler language
REXX scripting (Basic)
VSAM file handling
Endevor tool
DB2 database management
Agile
FTP and SFTP operations
Mainframe debugging
IBM utilities
Abend-aID tool
MYSQL
Accomplishments
- Recognized at TCS for automation initiatives that reduced manual reporting effort by 40% and boosted delivery efficiency by 30%.
- Delivered zero-defect Core Banking modules (CIBIL, NPA, Loan Processing, DMR) in production, ensuring smooth compliance and financial operations.
- Achieved 20% reduction in batch runtime through COBOL-JCL performance tuning, enabling faster end-of-day processing for critical banking transactions.
- Resolved and optimized 50+ high-severity incidents annually with 100% SLA compliance, strengthening system reliability.
- Consistently appreciated for cross-team collaboration and driving Agile delivery cycles, reducing release timelines by 15%.
- Honored by shri PM for academic excellence (PMSSS) in 2017.
Timeline
System Engineer (Mainframe Developer)
Tata Consultancy Services
12.2021 - Current
Higher Secondary - Science
Govt GHSS
04.2001 -
M.Tech - Electronics & Communication
Chandigarh University
B.Tech - Electronics & Communication
SNDT Women's University