Baskar Sethu

Highly experienced Mainframe professional with over 14 years of expertise in system testing and application support on Microsoft Z Series Mainframes. Possesses a comprehensive understanding of core mainframe technologies, including JCL, DB2, COBOL, and VSAM. Proven ability to deliver high-quality application functionality through meticulous functional and technical analysis. Demonstrated success in automating testing processes using tools like Jenkins, enhancing efficiency and reliability. Excels in ensuring robust and stable mainframe environments through proactive problem-solving and in-depth technical knowledge.

1. Mainframe System Testing:
o Develop comprehensive test plans, detailed test cases, and effective test scripts for mainframe applications.
o Execute these plans and scripts to ensure thorough testing coverage.
o Conduct various testing types, including functional, integration, regression, and performance testing, to validate application   functionality and stability.
o Identify, analyze, and meticulously document software defects and discrepancies encountered during testing.
o Collaborate closely with development teams to ensure timely and effective resolution of identified defects.
o Utilize appropriate testing tools and methodologies to optimize testing processes and enhance efficiency.
o Generate and deliver comprehensive test result reports, providing clear and concise summaries of testing outcomes.

2. Mainframe Application Support:

o Provide technical assistance to users of mainframe applications, effectively resolving user issues and addressing inquiries.
o Troubleshoot and diagnose complex application problems, identifying root causes and implementing sustainable solutions.
o Proactively monitor system performance to identify and address potential issues before they impact operations.
o Perform application deployments and configuration changes, ensuring seamless transitions and minimal disruption.
o Maintain accurate and up to date documentation of application configuration and support procedures.
o Collaborate effectively with developers and infrastructure teams to ensure smooth application operations and efficient problem resolution.
o Perform JCL maintenance and debugging, ensuring optimal job execution and performance.
o Execute DB2 queries and perform data manipulation for both support and testing purposes.
o Execute the annual data capture process, transferring data from the Production environment to the Test environment.
o Perform release refreshes within the Test environment, using captured data unloads, prior to the initiation of each release cycle.
o Conduct comprehensive regression testing during disaster recovery exercises.

• COBOL/REXX
• JCL
• CICS
• DB2/IMS
• MVS
• VSAM
• ISPF
• SQL
• SPUFI/DB2ADM/QMF
• FILE MANAGER/File-Aid/INSY
• Control-M
• UNIX/linux
• NDM/FTP/SFTP

• Received Certificate of Achievement for 4 consecutive years for my contribution to the projects that I worked on.
• Received Accolades and Appreciations for being the best employee of the team.

• US Business Visa, 10/19/32