Abhigyan Singh

Mainframe Software Engineer with around 3 years of experience designing, building, and automating enterprise mainframe applications at LTM for Travelers Insurance, a Fortune 500 company. Delivered automation solutions that reduced manual testing effort by 99% and accelerated JCL creation by 92% using COBOL, JCL, REXX, and AI-assisted tooling (GitHub Copilot, Agentic AI). Strong background in CICS, VSAM, DB2, and full-stack mainframe delivery with hands-on experience in Agile and SAFe environments.

Software Engineer - LTM - Pune, India

(2023-01)

Client: Travelers Insurance Company (Fortune 500) | Domain: Property and Casualty Insurance

• Built an end-to-end automated DBT testing framework using COBOL, JCL, and REXX across UAT and MO environments for multiple lines of business, reducing a full-day manual testing cycle to under 5 minutes — a 99%+ improvement in testing efficiency.
• Architected an AI-powered Test JCL Generation tool using GitHub Copilot and Agentic AI that auto-creates and deploys production proc test JCLs to the mainframe through a simple batch file, eliminating the need to navigate the mainframe entirely. Reduced per-proc creation time from 25 minutes to under 2 minutes (92% faster), with support for parallel multi-proc processing in the same 2 to 3 minute window.
• Developed and maintained production-grade COBOL, JCL, CICS, VSAM, and DB2 code for critical insurance processing systems, delivering features on time across all agile sprint and PI cycles.
• Led end-to-end delivery of mainframe application components including requirements analysis, design, coding, unit testing, integration testing, and deployment across all stack layers.
• Mentored junior engineers on mainframe technologies and system knowledge, serving as a go-to technical advisor for the team.
• Conducted thorough code reviews and test case reviews to enforce functional compliance and maintain high code quality standards.
• Collaborated across cross-functional teams in design triage, defect triage, PI planning, sprint planning, and daily stand-ups within an Agile and SAFe framework.
• Proactively identified project risks and communicated them to Client Stakeholders and Product Owners, ensuring on-time delivery with zero critical escalations.
• Cross-skilled with multiple internal and external teams to ensure seamless integration and timely fulfillment of business requests.

Bachelor of Technology - Computer Science and Engineering - United College of Engineering and Management (2022-06)