Akashdeep Chakraborty
Bangalore
Summary
Mainframe professional with 8 years of experience delivering robust, high-performance solutions across US Retirement, Insurance, Retail, Manufacturing, and Banking domains. Proven expertise in COBOL, JCL, DB2, VSAM, CICS, Autosys/TWS, and MicroFocus COBOL on Linux. Currently leading a team as Senior Mainframe Developer (P3), driving end-to-end batch integrity, COBOL-DB2 optimizations, and cross-platform integrations with Java, Informatica, and AWS. Adept at impact analysis, root cause analysis, production support, and mentoring teams — with a consistent track record of improving system reliability, reducing job failures, and delivering on-time in Agile environments.
Overview
8
8
years of professional experience
1
1
Certification
Work History
Team Leader - Senior Mainframe Developer (P3)
SLK Software
Bengaluru
04.2025 - Current
- Develop and enhance COBOL-driven workflows for statement generation processes, improving stability and accuracy of retirement outputs.
- Perform impact analysis and implement optimized COBOL-DB2 solutions, reducing job failures and improving batch reliability.
- Monitor and validate batch schedules using Autosys/TWS ensuring end-to-end batch integrity across critical retirement jobs.
- Collaborate with Java, Informatica, and AWS teams to maintain cross-platform data flow and resolve cross-system data issues.
- Resolve critical production issues, improving batch reliability and significantly reducing job failures across the schedule.
- Work in a Linux environment using MicroFocus COBOL for cross-platform mainframe solution development.
- US Retirement Domain
Mainframe Developer (Lead I)
UST
Bengaluru
10.2024 - 03.2025
- Performed impact analysis for retail system enhancements using DB2, Changeman, and Trans JCL.
- Designed and executed detailed test cycles reducing post-production defects significantly across retail modules.
- Retail Domain
Mainframe Developer
TCS
Bengaluru
04.2024 - 09.2024
- Enhanced card payment modules using COBOL, DB2, and JCL, improving processing accuracy and throughput.
- Improved throughput by optimizing batch transaction processing, reducing end-to-end processing time.
- Banking Domain (Card Payment)
Mainframe Developer
TCS
Kolkata
03.2023 - 04.2024
- Diagnosed and resolved 20+ business logic and performance issues within existing mainframe and TANDEM systems using root cause analysis (COBOL85, S-COBOL, FUP, Pathcom, IBM MQ, Enscribe).
- Developed and implemented design solutions that reduced software application costs by 15% while improving quality and performance.
- Created and executed comprehensive system test plans, resulting in a 20% increase in software reliability and a 30% reduction in post-release defects.
- Collaborated with business units to gather and document requirements, contributing to SDLC documentation and improving project delivery times by 25%.
- Manufacturing Domain
Mainframe Support Executive
TCS
Kolkata
06.2022 - 03.2023
- Achieved 95% SLA adherence through proactive monitoring and issue resolution across retail batch operations.
- Improved system efficiency by 15% and reduced downtime by 10% through targeted performance tuning.
- Cut incident response time by 30% through streamlined support processes and runbook improvements.
- Retail Domain
Mainframe Developer
Cognizant
Kolkata
11.2017 - 04.2022
- Led the development and enhancement of 5+ group products within the core insurance application, increasing product efficiency by 20%.
- Liaised with data consumers to execute requirements within an Agile framework, resulting in a 25% improvement in project delivery time.
- Enhanced COBOL-DB2 code, JCL, and COBOL-VSAM programs, reducing processing time by 15% and increasing code efficiency by 10%.
- Conducted Root Cause Analysis (RCA) and documented job failures during unit testing, reducing recurring issues by 30% and improving overall system stability.
- Implemented updates to DB2 database, JCL, and EZletter codes, resulting in a 20% increase in system performance and accuracy.
- Identified and resolved 40+ business logic and performance issues, improving system reliability by 25%.
- Evaluated and implemented design solutions, enhancing cost-effectiveness by 18%, quality by 20%, and performance by 25%.
- Collaborated with business units on VSAM requirements and contributed to SDLC documentation, improving project accuracy and delivery by 20%.
- Monitored and optimized code and application performance, resulting in a 15% improvement in system efficiency and 10% reduction in downtime.
- Insurance Domain
Education
B.Tech - Information Technology
Institute of Engineering And Management
07-2017
Skills
- COBOL (IBM & MicroFocus)
- JCL
- DB2 (SQL, SPUFI, EXPLAIN, BIND/REBIND)
- VSAM (KSDS/ESDS/RRDS)
- CICS
- Autosys
- TWS/OPC
- CA Workload Automation
- Batch Checkpoint/Restart Design
- Changeman
- Endevor
- Tortoise SVN
- TeamCity
- JIRA
- DB2 z/OS
- SPUFI
- AQT
- DBeaver
- IDAA (IBM Db2 Analytics Accelerator)
- Unix/Linux (PuTTY, WinSCP)
- PagerDuty
- Cherwell
- OPCHANGE
- Webfocus
- Agile/Scrum
- SDLC
- Root Cause Analysis (RCA)
- Impact Analysis
- SLA Management
Certification
LOMA 281
Accomplishments
- Led the team as a Senior Developer (P3), managing end-to-end batch workflows for the US Retirement domain at SLK Software.
- Resolved over 40 production issues at Cognizant, with a 25% improvement in system reliability.
- Reduced post-release defects by 30% through comprehensive system test planning at TCS Manufacturing.
- Diagnosed and resolved over 20 business logic and performance issues in TANDEM/Mainframe systems using RCA techniques at TCS.
- Achieved 95% SLA adherence through proactive monitoring and issue resolution in Retail domain support.
Timeline
Team Leader - Senior Mainframe Developer (P3)
SLK Software
04.2025 - Current
Mainframe Developer (Lead I)
UST
10.2024 - 03.2025
Mainframe Developer
TCS
04.2024 - 09.2024
Mainframe Developer
TCS
03.2023 - 04.2024
Mainframe Support Executive
TCS
06.2022 - 03.2023
Mainframe Developer
Cognizant
11.2017 - 04.2022
B.Tech - Information Technology
Institute of Engineering And Management