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Senior Mainframe Developer with 4+ years in IBM z/OS Application Development
Senior Software Engineer / Senior Mainframe Developer and Production Support Engineer with 4.7+ years of experience in IBM z/OS application development, batch support, incident management, performance tuning, and regulatory release delivery across enterprise payroll, retail, and financial systems. Strong hands-on expertise in COBOL, JCL, DB2, SQL, CICS, VSAM, IMS, REXX, Endevor, File-AID, Abend-AID, Xpediter, CA-7, Control-M, and RACF. Improved batch performance by 40%, reduced manual support effort by 50%, cut incident resolution time by 30%, and delivered zero-downtime production releases with strong SLA and audit discipline.
Vidya Vahini College
Bachelor of Computer Applications (BCA) · Computer Science
August 1, 2018 – June 30, 2021
Vidya Vahini Pre-University College
Higher Secondary Certificate (HSC) · Science Stream
June 1, 2016 – May 31, 2018
Sopra Steria India Limited
Senior Software Engineer - Mainframe Developer and Production Support
October 1, 2021 – Present
Bengaluru, Karnataka, India
Enterprise Payroll Mainframe Modernization and Support
October 1, 2021 – May 1, 2026
Enhanced and supported enterprise payroll and financial transaction applications covering batch processing, online transactions, report generation, data validation, incident resolution, and release delivery. Improved batch performance by 40%, reduced manual effort by 50%, and cut production issue resolution time by 30% through automation, SQL tuning, JCL optimization, and permanent defect fixes.
Master Dump Enhancement - Tesco
October 1, 2021 – May 1, 2026
Re-designed VSAM file-processing logic and COBOL record layouts, eliminated redundant I/O, streamlined JCL PROC chains, and improved high-volume master-dump processing throughput by 40%.
ZELLIS Migration and Integration
October 1, 2021 – May 1, 2026
Supported zero-downtime migration and integration by coordinating CICS cutovers, DB2/IMS validation, data-integrity checks, RACF access controls, and automated compliance verification using REXX.
Unipay Production Support and Enhancements
October 1, 2021 – May 1, 2026
Delivered payroll regulatory enhancements and production support fixes across batch and online modules, achieving 100% on-time release delivery and reducing Tier-2/Tier-3 incident resolution time by 30%.
Generative AI Fundamentals
Databricks
May 1, 2026 – Present
Python and Data Analytics
GUVI Geek Networks
May 1, 2026 – Present
Advanced Microsoft Office and Excel
GUVI Geek Networks
May 1, 2026 – Present
Project Management Professional
G Learning
May 1, 2026 – Present
Cultural Fit Analysis
The candidate exhibits a strong cultural fit for a Senior Mainframe Developer role, given their extensive and specialized experience directly aligning with the target position. Their professional projects showcase a comprehensive understanding of the mainframe ecosystem, covering development, modernization, and critical production support. The quantifiable impact metrics demonstrate a commitment to efficiency and operational excellence. While certifications like 'Generative AI Fundamentals' and 'Python and Data Analytics' are not directly mainframe-related, they indicate a proactive approach to continuous learning and broader technical awareness, which is a positive trait for adaptability and growth within an organization.
Soft Skills & Operational Fit
The candidate demonstrates strong problem-solving abilities through incident resolution and performance tuning. Their experience in automating tasks with REXX highlights an efficiency-driven mindset. Collaboration with onshore teams, QA, and business users indicates good teamwork and stakeholder management. A focus on audit compliance, security, and structured release processes reflects a disciplined and responsible operational approach. The quantifiable achievements underscore a results-oriented and proactive work ethic.