Triveni Medarametla

Highly skilled Mainframe System Programmer with extensive knowledge of z/OS, JCL, and CLIST with 8+ years of experience. I possess a strong background in providing 24/7 on-call support, troubleshooting intricate mainframe issues, and implementing z/OS upgrades and maintenance. My expertise also includes managing comprehensive MVS-related activities, such as IPL, PARMLIB configuration, and JES customization.

Proven experience collaborating with multiple mainframe products from leading vendors, including IBM and Broadcom-CA.

Zos System Programmer - Ford, Dechan Consulting

(2025-10)

• Good experience on installing ZOS connect, Tectia for ZOS, CA-products and BMC products
• Knowledge of JCL, REXX, CLIST and JES3 Plus
• Experience working with MF technologies such as JCL, VSAM and GDG files
• Experience with Initial Program Load processes.
• Ability to work independently and effectively during night shifts.
• Strong analytical, troubleshooting, and problem-solving skills.
• Install, upgrade, maintain, and support mainframe products from IBM, Broadcom-CA.
• Supported installation of ISV products under supervision, including SMP/E RECEIVE and APPLY steps.
• Managed RACF access controls, permissions, and role assignments to ensure secure access to datasets, resources, and applications.
• Supported RACF security compliance audits by generating access reports, reviewing permissions, and addressing audit findings.
• Worked with operations and application teams to resolve SMS‑related allocation and storage issues.
• Supported dataset allocation and management, including PS, PDS, PDSE, and VSAM datasets.
• Analyzed and resolved allocation errors (space, catalog, SMS class issues) to support batch and online processing.
• Executed end‑to‑end z/OS upgrades and maintenance using SMP/E, including RECEIVE, APPLY, and ACCEPT processes.
• Installed and maintained IBM z/OS PTFs, HIPERs, and Recommended Service Upgrades (RSUs) to ensure system stability and compliance.
• Assisted in tolerance maintenance by applying PTFs and RSUs using SMP/E under the guidance of senior system programmers
• Performed Health checks after every IPL

Mainframe System Programmer - Tekhops LLC

(2024-12 - 2025-07)

• Provide 24X7 on-call support as part of a team rotation
• Good experience on installing ZOS software and other ISV products.
• Good experience on Job Action Language and Batch processing tools.
• Knowledge of JCL, REXX, CLIST and Modify Assembler EXITS.
• Knowledge of z/OS HW, LPAR, HMC.
• Experience working with MF technologies such as JCL, VSAM and GDG files
• Experience with Initial Program Load processes.
• Worked with system and application teams to support network connectivity for mainframe applications.
• Assisted in monitoring TCP/IP performance and availability, ensuring stable network operations.
• Supported basic configuration of IP addressing, ports, and protocols in coordination with network teams.
• Assisted with OS and ISV upgrade coordination across teams and vendors.
• Participated in planning, testing, and rollout across multiple environments.
• Ability to work independently and effectively during night shifts.
• Strong analytical, troubleshooting, and problem-solving skills.
• Participate in DR recovery and testing
• Working knowledge on Z/os upgrade
• Build the work needed to implement features from the product backlog

Mainframe System Programmer - DHS

(2023-05 - 2024-12)

• Working on installing and customizing IDZ products (File manager, Fault Analyser, Debug tool, Dynamic test Runner, ADFZ Common components)
• Work with IBM / ISVs to troubleshoot / debug mainframe service incidents and apply fixes as necessary
• Coordinated with IBM and ISV vendors, as well as internal infrastructure and application teams, to ensure successful OS and product upgrades.
• Reviewed vendor documentation and maintenance instructions to support smooth upgrade execution.
• Ability to understand the client's overall Mainframe z/OS setup across the various Systems/LPARs in different environments (Prod/Dev/Test)
• Participate on every IPL.
• PARMLIB configuration and JES customization.
• Configured and maintained IODF structures to define and manage I/O device configurations across multiple LPARs in a Sysplex environment.
• Participate in DR recovery and testing
• Working knowledge on Z/os upgrade
• Work with vendors for system support and problem resolution
• Knowledge of BMC products.
• Knowledge and understanding of z/OS and z/OS installation and maintenance including SMP/E
• I have installed Broadcom products through SPME.( Easytrieve,Ca-Intertest,Ca-Sysview)
• I have installed IBM products through SPME.(System automation & Netview
• Working knowledge of TSO/ISPF, SDSF, JCL
• Working knowledge of Unix System Services (USS)
• Understand z/OS services structure, Parallel Sysplex, Catalog management z/OS System Programmer - IBM India PVT LTD

(2018-04 - 2022-08)

• Part of a team that is responsible for the 24/7 availability of the mainframe environment
• Responsible for researching and patching newly published security vulnerabilities to ensure the integrity of the environment
• Worked on installing and upgrading IBM z/OS and IMS software
• Monitored and reported on resource CPU & Memory utilization to executives and customers
• Provided primary and backup support for multiple z/OS IBM
• Participated in planning and implementing projects such as Product upgrades, z/OS Operating System upgrades and Disaster Recovery tests
• Provided support in managing end - to - end MVS related activities Which includes z/Os 2.2 and 2.3 upgrades and maintenance, DR activities, Parmlib management, Supporting IPL,etc
• Worked in multiple accounts with different environments with sysplex and monoplex
• Involved in multiple DR activities and z13 processor upgrades
• Expertise in applying license keys and monthly CIRATS maintenance
• Worked in JES2 and having Knowledge on MVS commands
• Strengths include an extremely short learning curve, adapting to different environments easily, creative result-oriented and solution-focused combined with problem solving.