COBOL
Balakarthikeyan Chinnapaiyan
Mainframe Developer & Miner
Bengaluru
Summary
Experienced Mainframe Developer and Rules Miner with 9 years of expertise in Banking, Insurance, and Finance sectors. Skilled in JCL, COBOL, REXX, Batch, and DB2. Adept at gathering requirements, designing solutions, and delivering technical implementations. Also, proficient in Mainframe modernization with Rules mining, Business Rules documentation, Impact analysis, and Batch decommissioning as well.
Proven track record as an onsite coordinator in Belgium, collaborating with stakeholders and leading offshore teams to meet deadlines. Strong analytical, problem-solving, and communication skills, with the ability to quickly learn new technologies and work effectively in diverse teams.
Overview
9
9
years of professional experience
4
4
years of post-secondary education
4
4
Certificates
4
4
Languages
Work History
Consultant
Deloitte USI
Bengaluru
10.2021 - Current
- Conducted Comprehensive Impact Analysis of legacy mainframe applications to identify and extract business rules, ensuring all relevant logic was documented and available for modernization efforts.
- Managed client relationships through regular check-ins and updates on project progress.
- Collaborated with Cross-Functional Teams application developers, business analysts, and stakeholders to gather requirements, validate extracted rules, and ensure alignment with business objectives.
- Developed innovative strategies for clients, resulting in increased revenue and business growth.
- Cultivated positive relationships with vendors to deliver timely and cost-effective supply of services and materials.
- Educated staff on organizational mission and goals to help employees achieve success.
- Played pivotal role as Batch Decommissioning lead: Removed ~6K non-essential batch jobs from Control-M and Endevor.
- Proposed strategic insights for the planning and scoping to set the stage for the Retail batch modernization by leveraging 1:1 Java + Cobol code conversion strategy.
Associate
Cognizant Technology Solutions, CTS
Chennai
02.2016 - 09.2021
- Analyzed business requirements to transform them into comprehensive functional design specifications, ensuring alignment with stakeholder needs.
- Established strong relationships with key stakeholders, facilitating effective communication across departments and teams.
- Executed complex SQL queries to extract and validate data for unit testing, utilizing tools such as QMF and SPUFI, and crafted comprehensive test scenarios to cover all aspects of business requirements.
- Designed, Developed, Tested and deployed 3 major Insurance Sub applications including 60 JCLs, 40 Cobol Programs.
- Mentored junior developers, sharing best practices and guiding them through complex tasks.
- Collaborated with cross-functional teams for seamless integration of new features and functionalities.
- Served as Onsite coordinator at Belgium, collaborated effectively with business stakeholders, efficiently steered offshore resources towards the expected delivery milestones.
- Developed innovative solutions by identifying, analyzing, and resolving complex software issues.
- Contributed fully to design assessments, code reviews and brainstorming sessions.
- Optimized database operations for improved query performance, resulting in faster data retrieval times for end users.
- Coordinated deployments of new software, feature updates and fixes.
Education
Bachelor of Engineering - Electrical & Electronics Engineering
K S Rangasamy College of Technolgy
Tamilnadu 06.2011 - 05.2015
Skills
Automation tools development
undefinedAccomplishments
- Established a Call chain analyzer automation tool using Python script for gathering the impacted flows from Mining Call chains, specific to the tables that are currently in modernization scope.
- Crafted a comprehensive Power BI batch dashboard to visualize & monitor jobs from BMC Control-M, providing actionable insights to support modernization efforts across multiple teams.
- Designed and implemented an automation tool utilizing Excel VBA to identify the status of mainframe components (Active/Inactive), facilitated regular data refreshes to ensure the tool's accuracy and reliability.
- Completed AWS Certified Developer Associate and looking forward to upskill more and contribute knowledge in developing, testing and optimizing Cloud applications.
- Honored with the Business Enabler Award by Belgian clients for successfully delivering a Proof of Concept that enabled platform-independent functional testing using Excel VBA and REXX.
Software
JCL
DB2
REXX
VSAM
GDG
CICS
FILEAID
Control-M
Changeman
Endevor
Python
Excel VBA
Xpeditor
Generative AI Langchain
Prompt Engineering
Power BI
ServiceNow
Certification
AWS Certified Developer - Associate
Reading Books
A dedicated reader of self-help and non-fiction literature, including works by Robin Sharma, Ankur Warikoo and Rhonda Byrne. This hobby has cultivated my critical thinking, emotional intelligence, and a proactive approach to personal and professional development. It continually inspires me to apply new insights and strategies to enhance my skills and effectiveness.
Work Availability
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
swipe to browse
Interests
Reading books
Visiting new places
Playing with my adorable son
Meeting & interacting with new people
Watching talk-shows
Languages
English
Advanced (C1)
Tamil
Bilingual or Proficient (C2)
Hindi
Intermediate (B1)
Malayalam
Elementary (A2)
Work Preference
Work Type
Full TimeWork Location
HybridRemoteOn-SiteImportant To Me
Career advancementPersonal development programsCompany CultureHealthcare benefitsQuote
A person who feels valued will always do more than what is expected.
Timeline
AWS - Approach to Mainframe Migration and Modernization Course
05-2025
LearnTube.ai - Data Analytics
05-2025
Career Essentials in Generative AI by Microsoft and LinkedIn
05-2025
AWS Certified Developer - Associate
05-2022
Consultant
Deloitte USI
10.2021 - Current
Associate
Cognizant Technology Solutions, CTS
02.2016 - 09.2021
Bachelor of Engineering - Electrical & Electronics Engineering
K S Rangasamy College of Technolgy
06.2011 - 05.2015
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