YANDAPALLI NAGA SAI KRISHNA
Summary
Results-driven Mainframe Developer with over 7 years of experience in the design, development, and production support of mission-critical healthcare business applications. Expertise in coding and debugging COBOL and CICS programs, optimizing DB2 queries, and developing automation scripts while ensuring 100% SLA compliance. Proven track record of enhancing job success rates by 35% and significantly reducing manual effort through automation initiatives by 30%. Committed to delivering high-quality solutions that drive operational efficiency and support organizational goals.
Overview
7
7
years of professional experience
1
1
Certification
Work History
Mainframe Developer & Team Lead
Tata Consultancy Services (TCS)
05.2018 - Current
- Develop and maintain COBOL, JCL, and CICS online programs to support healthcare enrollment, member eligibility, and claims processing systems.
- Design and enhance CICS transaction screens for enrollment updates, policy validation, and claim adjustments.
- Provide L2/L3 production support, resolving ABENDs (SOC7, S0C4, U4038) in both batch and online (CICS) environments, ensuring SLA adherence.
- Perform Root Cause Analysis (RCA) and deliver permanent fixes to prevent recurring issues.
- Automate reporting and job scheduling using EZTRIEVE and REXX scripts, reducing manual effort by 30%.
- Optimize DB2 queries and CICS transactions for performance and data integrity, supporting critical healthcare applications.
- Lead deployments and version upgrades, ensuring zero-defect implementation and smooth transitions.
- Manage CA-7 job scheduler and security administration using RACF.
- Client: Humana Healthcare
- Key Achievements:
- Streamlined healthcare member enrollment workflows by enhancing CICS transactions, reducing processing time by 20%.
- Reduced job failures by 35% through proactive RCA and permanent solutions.
- Implemented automation scripts reducing manual intervention by 30%.
- Delivered multiple successful deployments with zero post-implementation issues.
Education
Mainframe Support Analyst Training -
Tata Consultancy Services
09.2025
Post Graduation - undefined
Gayathri Vidya Parishad
01.2018
Skills
- Mainframe Technologies: COBOL, JCL, DB2, VSAM, CICS, IDMS
- Tools: CA-7, Endevor, File-Aid, SPUFI, QMF, REXX
- Operating Systems: z/OS, Windows
- Monitoring & Automation: Dynatrace, SolarWinds, EZTRIEVE scripting
- ITSM Tools: ServiceNow, BMC Remedy
Certification
- ITIL Foundation Certification
- IBM Mainframe Professional Certification
- Client Appreciation Awards (3 times) – For outstanding support and automation initiatives
- Best Performer Award and On-Spot Award (TCS) – For proactive problem-solving and SLA compliance
CAREER HIGHLIGHTS
- 7+ years of experience as a Mainframe Developer & Production Support Engineer in large-scale Healthcare Enrollment and Claims Management applications.
- Expert in COBOL, JCL, DB2, VSAM, CICS, CA-7, Endevor with strong skills in batch/online processing, automation, and ABEND resolution.
- Recipient of 3 Client Appreciation Awards for automation initiatives, incident resolution, and SLA compliance.
- Proven ability to lead teams, optimize healthcare enrollment workflows, and deliver zero-defect deployments.
- Strong expertise in CICS transaction processing, Root Cause Analysis (RCA), performance tuning, and implementing permanent fixes for stability and reliability.
Timeline
Mainframe Developer & Team Lead
Tata Consultancy Services (TCS)
05.2018 - Current
Post Graduation - undefined
Gayathri Vidya Parishad
Mainframe Support Analyst Training -
Tata Consultancy Services