Software Engineer Mainframe Developer

Nandita Gusain

Noida •***************@*****.***• +91-992******* • www.linkedin.com/nandita-gusain/

SUMMARY

Over 3+ years of relevant experience in Mainframe development, support, and migration projects.

Extensive experience with COBOL, Microfocus-COBOL, JCL, VSAM, and DB2.

Developed and Maintained batch applications, including Cobol Modules, DB2 stored procedures, while analyzing and modifying existing JCL streams to ensure efficient data processing and compliance with evolving business requirements.

Successfully managed code changes and migrated complex modules according to business needs.

Experienced in developing complex legacy applications with expertise in modern tools such as GitHub, Jenkins, WinSCP, IBM Data Studio and Micro Focus for cloud-based mainframe applications.

Experienced in Agile methodologies like Scrum, managing the SDLC from requirements to testing, maintenance, and production support.

Passionate about staying at the forefront of technology trends, with a commitment to delivering innovative and cost-effective solutions using modern mainframe technologies. EXPERIENCE

Cognizant Technology Solution India Pvt Ltd – Noida Noida Software Engineer April 2022 – Present

Worked on the migration, support, and modernization of the batch processing system for one of Fortune 500 financial institution.

Engaged in working with COBOL and DB2 Component, focusing on the development and optimization of critical business applications, conducting database queries, and ensuring seamless integration of application logic.

Developed and modified COBOL programs and copybooks in accordance with technical specifications and client coding standards, conducting impact analysis to ensure functionality and performance.

Conducted code reviews to ensure the quality of deliverables, resolve logical errors, and contributed to RCA documentation to prevent issues.

Assigned tasks and provided support during Development, SIT, UAT, and Production phases. Guided junior developers and collaborated with stakeholders to gather and analyze system requirements, ensuring quality and minimizing production issues.

Migrated 500+ JCL jobs and over 500 VSAM files from mainframe systems to AWS Cloud, ensuring minimal downtime during integration while customizing procedures to align with specific client operational requirements.

Utilized GitHub for version control to efficiently manage component migrations across various project environments.

Implemented Jenkins for build automation, significantly reducing deployment times and minimizing the risk of manual errors.

Proficient in WinSCP for secure file transfer and synchronization between local and remote servers, ensuring data integrity and security.

Attended daily status meetings with the team and onshore counterparts, monitored SLAs for compliance, and communicated or escalated issues when necessary. TECHNICAL SKILLS

Technologies : IBM Mainframes

Operating System : IBM Z/OS

Languages : COBOL, JCL, Microfocus Cobol,

Database : DB2

File System : VSAM

Scheduling Tools : CA7, ZENA

Tools/Utilities : File-aid, TSO, ISPF, SPUFI, Endeavor, Linux, Putty, SFTP, GitHub, Jenkins, IBM data studio, WinSCP, Microfocus Enterprise, Beyond compare and Classic data file tools. PROJECT

Project Lincoln Mainframe migration and Support

Role Application Developer

Duration Sep 2022– Present

Environment

Languages: Cobol, Jcl, Microfocus Cobol, VSAM

Database: DB2

Tools: GitHub, Jenkins, IBM data studio, WinSCP, Microfocus Enterprise, CA7, File-aid, TSO, ISPF, SPUFI, Endeavor, Beyond compare and Classic data file tools

O/S: MVS, Z/OS

Initially worked in production support before transitioning to a mainframe-to-AWS Cloud migration project.

Works with Change Management/ Release Managers on the evaluation of change events

Played a key role in migrating four applications from mainframe to AWS Cloud.

Conducted thorough testing across mainframe and AWS Cloud environments, including Dev, SIT, UAT, and parallel production testing.

Resolved issues in COBOL and DB2 program modules during migration.

Good hands-on experience in DB2 pre compilation process.

Understood and implemented scheduling changes, migrating from CA7 in the on-prem mainframe environment to Zena scheduling in the AWS region, ensuring alignment with the existing framework.

Utilized GitHub for version control and managed component movement across different regions

Automated module builds using Jenkins.

Troubleshot and resolved production issues, providing post-production support during the validity period and extending assistance as needed based on client requirements.

Analyzing the service requests coming from End users and providing the desired solution. EDUCATION

College Of Technology Pantnagar, Uttarakhand

Bachelor of Technology 2017-2021

Graduated with distinction, recognized for academic excellence and active participation in academic activities.

ACHIEVEMENTS

Achieved a flawless migration for a critical application, resulting in zero escalations and zero abends while receiving commendation from the AVP client and Cognizant project delivery.

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