Mainframe Developer Technical Support

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Gautam Kumar Jha

Kolkata, West Bengal, India *************@*****.*** +91-987**-***** in/jha-gautam SUMMARY

Mainframe Developer with 3 years of experience in banking and insurance sectors for companies like CNA Insurance and USAA Bank. Proficient in COBOL, JCL, DB2, and CICS, with a proven track record in automating critical business processes, optimizing system performance, and ensuring data integrity. Demonstrated expertise in managing vendor transitions, automating credit collections, and processing taxation and insurance claims. Adept at fault analysis, debugging, and maintaining high system reliability. EXPERIENCE

Mainframe Developer

Tata Consultancy Services- CNA Insurance January 2024 - Present, Kolkata

• Responsibility:

System Development: Analyzed business requirements and developed COBOL programs for automating tax calculations, generating reports, and streamlining claim adjudication processes.

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Batch Processing and Data Management: Utilized JCL for efficient batch processing and designed DB2 databases, GDG, and VSAM files to ensure effective data storage, retrieval, and integrity.

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Data Migration and Integration: Executed data migration strategies to transition critical data from legacy systems to modern environments, ensuring data consistency and integrity, and employed FTP for seamless inter-system communication.

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• File Transmission Security: Used Bash scripts to secure file transmission through Control-M job scheduling. Performance Optimization: Conducted performance tuning and optimization of COBOL programs, reducing execution times and resource usage.

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Technical Support: Provided technical support and maintenance, swiftly resolving production issues and adhering to SLAs to ensure operational efficiency and reliability.

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• Achievements:

Efficiency Improvements: Reduced batch processing time for taxation reports by 30% through strategic code optimization and resource management.

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Accuracy Enhancements: Achieved a 98% accuracy rate in claim adjudication by implementing rigorous testing protocols and automated validation checks.

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Successful Data Migration: Successfully migrated over 1 million records with zero data loss, ensuring seamless continuity of business operations.

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Mainframe Developer

Tata Consultancy Services - USAA Bank February 2022 - December 2023, Hyderabad

• Responsibility:

Stakeholder Collaboration and Feature Refinement: Collaborated with stakeholders to define POC scope, refined features based on feedback following Agile methodologies and Jira boards, and aligned the new system with business goals and requirements.

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System Integration and Development: Developed and integrated COBOL, Easytrieve programs with the new vendor's system, utilizing JCL for batch processing and ensuring real-time transaction processing with CICS.

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Process Documentation and Testing: Created comprehensive documentation and test plans, and used Xpediter for debugging to ensure system reliability and accuracy.

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Release Management and Data Migration: Coordinated smooth deployments, refined DB2 databases for optimized performance, and ensured seamless data migration with 100% integrity.

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Dual Stream Maintenance and Issue Resolution: Maintained dual systems during transition, conducted retirement analysis of the old system, and provided prompt issue resolution to minimize impact.

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• Achievements:

• Seamless Transition: Successfully transitioned to the new vendor with zero downtime and minimal disruption to customer services.

• Data Integrity: Ensured 100% data integrity during migration, with no data loss or inaccuracies.

• Performance Enhancements: Improved system performance, reducing batch processing times by 20% through effective optimization. Mainframe Developer

Tata Consultancy Services - USAA Bank August 2021 - January 2022, Hyderabad

• Responsibility:

Batch Processing Automation: Developed and optimized COBOL programs and utilized JCL to schedule and execute batch jobs, ensuring timely and accurate processing of credit collections data.

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Fault Analysis and Debugging: Conducted fault analysis and employed Xpediter and other debugging tools to identify and resolve issues, ensuring program accuracy and reliability.

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• Debts Reporting: Implemented automated reporting mechanisms to generate detailed reports on outstanding debts and amounts.

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Notification System Automation: Designed and developed COBOL programs for an automated notification system to alert defaulters and business/collection agents based on predefined criteria and schedules.

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• Achievements:

Operational Efficiency: Achieved a 25% reduction in batch processing time and a 40% increase in overall operational efficiency by eliminating manual processes and optimizing code and resource management.

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System Reliability: Reduced error rates by 30% through effective fault analysis and debugging, enhancing the robustness and reliability of the automated system.

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Enhanced Reporting and Communication: Improved reporting accuracy and timeliness, and enhanced the efficiency of the notification process, ensuring timely communication with defaulters and agents.

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EDUCATION

Bachelor of Technology (B.Tech), Electrical Engineering Meghnad Saha Institute of Technology • Kolkata, WB • 2021 • 8.5 CERTIFICATIONS

Google Mainframe Modernization

Google • 2023

GCP Professional Data Engineer

Google Cloud • 2022

GCP Associate Cloud Engineer

Google Cloud • 2022

SKILLS

Languages: COBOL, JCL, Easytrieve, SQL

Middleware: CICS, MQ Series, FTP

Files & Database: DB2, VSAM, GDG, Access DB

Tools: TSO, ISPF, Endeavor, Control-M, SCM, CMS, IMPS, FileManager, Changeman, File-AID, Xpediter, Spufi, CA-7. Change Management Tool: Jira, ServiceNow, Github, Office 365 SecondarySkills:

Languages: C, Core Java,Python.

Google Cloud: Cloud Storage, Cloud SQL, PUB SUB, Dataproc, Bigquery, Looker. Data Visualization Tool: Apache NIFI.

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