---
title: "Sunaina Sahu - Specialist in Noida | Tal"
description: "Meet Sunaina Sahu, Mainframe Security Specialist @ HCLTech | RACF | IBM zSecure | Vanguard | z/OS | PL/1| COBOL | JCL |DB2 | CICS based in Noida."
image: "https://tal.club/meet/sunaina-3/share-image"
---

# Sunaina Sahu on Tal

## Headline

Mainframe Security Specialist @ HCLTech \| RACF \| IBM zSecure \| Vanguard \| z/OS \| PL/1\| COBOL \| JCL \|DB2 \| CICS

## About

Mainframe Security & Development professional with 5\+ years of experience across RACF administration, IBM zSecure, and Vanguard security platforms on z/OS environments\. Hands\-on expertise in security audit reporting, violation monitoring, and access control management\. Strong development background in PL/I, COBOL, DB2, JCL, CICS, and MQ, with proven delivery at EUROCLEAR — one of the world's largest financial securities platforms\. IBM\-certified in z/OS operations and DB2\. Adept at working in Agile teams across large\-scale banking and financial domain projects\.

## Location

Noida

## Work experience

Specialist at HCLTech, Sep 2024 \- Present · 1 yr 11 mos, Noida, 1\) Administered RACF user IDs, dataset profiles, group structures, and resource access rules on z/OS environments\. 2\) Performed security auditing and compliance reporting using IBM zSecure Audit\. 3\) Monitored mainframe environment for security policy violations and incidents using Vanguard 4\) Executed daily, weekly, and monthly security audit reports and liaised with infrastructure teams\. 5\) Supported access provisioning and de\-provisioning as per IAM standards\.

Associate Consultant at Capgemini, Jan 2023 \- Sep 2024 · 1 yr 9 mos, Noida, 1\) Developed and unit\-tested new PL/I and COBOL programs for EUROCLEAR's securities settlement platform serving 80\+ countries\. 2\) Delivered EBASR Modernization project — built 7 new services resulting in 30% improvement in system performance\. 3\) Implemented T2S EFI Finland conversion ensuring seamless full\-conversion of settlement services\. 4\) Resolved CM Data Externalization performance bottleneck in collateral management for high\-volume concurrent transactions\. 5\) Created Technical Design Documents covering JCL changes, DB2 table modifications, and program specifications\.

Senior Software Engineer at Capgemini, Jan 2022 \- Jan 2023 · 1 yr 1 mo, Hyderabad, Telangana, India

Software Engineer at Capgemini, Nov 2020 \- Jan 2022 · 1 yr 3 mos, Andhra Pradesh, India

Development Specialist at The Tech Cubes, Jan 2020 \- Jun 2020 · 6 mos, New Delhi, Developed interactive and user\-friendly front\-end components for multiple projects\. Designed and optimized web pages to enhance user experience\.

## Education

Master of Computer Applications \- MCA, Computer Science, Dr\. A\.P\.J\. Abdul Kalam Technical University

BCA \- Bachelor of Computer Application, Computers, UNITED INSTITUTE OF MANAGEMENT, LEADER ROAD,

[View the original profile](https://tal.club/meet/sunaina-3)

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