Sayantan Sarbadhikary
Mainframe Manager
Bangalore
Summary
Results-oriented Mainframe Manager with over 12 years of experience in developing and supporting large-scale enterprise applications on IBM z/OS.
Proven expertise in COBOL, JCL, CICS, and DB2, coupled with deep commitment to team collaboration and adaptability. Known for reliability and ability to thrive in dynamic environments while driving project success. Skilled in problem-solving, system analysis, and optimizing performance to meet evolving business needs.
Overview
12
12
years of professional experience
Work History
Assistant Consultant / Technical Lead
Tata Consultancy Services
Bangalore
07.2024 - Current
- Led development and support for high-volume batch and online applications (COBOL, CICS, DB2),improving system performance through query optimization, efficient file handling, and batch job tuning.
- Spearheaded impact analysis and implement over 20 enhancements, aligning technical solutions with 100% of business requirements.
- Mentored a team of 10+ members, promoting mainframe best practices and increasing team productivity by 25%.
- Provided technical expertise during requirements gathering sessions, translating business needs into viable solutions.
- Managed complex projects effectively, prioritizing tasks and coordinating team efforts to achieve project objectives.
- Streamlined database access by designing and implementing efficient data queries and storage procedures.
Technology Lead
Infosys
Bengaluru
09.2021 - 07.2024
- Led Agile team delivering enterprise banking document systems on IBM Mainframe.
- Designed COBOL modules, managed DB2 databases, and supported CICS transactions.
- Partnered with global stakeholders and ensured zero-defect production deployments.
- Provided on-call support and resolved critical issues within SLA.
Senior Mainframe Developer
Cognizant Technology Solutions
Kolkata
07.2016 - 09.2021
- Led development for MetLife’s Vantage platform, enhancing COBOL/DB2 programs to support annuity and life insurance policy lifecycles.
- Optimized policy validation and billing workflows using JCL and Easytrieve, improving processing efficiency.
- Spearheaded impact analysis for complex regulatory changes and successfully managed UAT for high-stakes deployments.
- Investigated and resolved critical production ABENDs, reducing recurring system errors by 20% through root cause analysis.
- Architected and supported batch programs for Personal Injury and Bodily Injury claims processing at Travelers Insurance.
- Developed secure ETL migration processes using COBOL and JCL for sensitive financial data migrations at Capital One.
Software Engineer
Syntel
Mumbai
03.2014 - 06.2016
- Optimized healthcare administration systems for policy quoting and claims, improving processing reliability.
- Monitored mission-critical job cycles and resolved 50+ ABENDs, ensuring 100% database integrity and system uptime.
- Maintained production stability for high-volume batch workflows through proactive system monitoring and JCL optimization.
Education
Bachelor of Technology - Electronics & Communication Engineering
Bengal College Of Engineering And Technology(WBUT)
Durgapur, India 04.2001 -
Skills
COBOL programming
JCL expertise
CICS development
IBM utilities
PL and I programming
REXX scripting
VSAM file handling
DB2 database management
IDMS database
Accomplishments
· Maintained 98%+ SLA adherence across production support
· Led team of 9 developers ensuring timely delivery.
· Delivered zero-defect releases in enterprise systems.
· Awarded TCS Star of the Month and TCS Gems Award for impactful production fixes
Timeline
Assistant Consultant / Technical Lead
Tata Consultancy Services
07.2024 - Current
Technology Lead
Infosys
09.2021 - 07.2024
Senior Mainframe Developer
Cognizant Technology Solutions
07.2016 - 09.2021
Software Engineer
Syntel
03.2014 - 06.2016
Bachelor of Technology - Electronics & Communication Engineering
Bengal College Of Engineering And Technology(WBUT)
04.2001 -