Summary
Overview
Work History
Education
Skills
Certification
Disclaimer
Timeline
Generic

Senthilkumar K

Summary

Dynamic IT professional with extensive experience at HCL Tech Limited, adept in managing over 5000 Linux servers and driving operational excellence. Proven expertise in RedHat and Oracle Linux, complemented by strong leadership skills. Successfully enhanced team performance and compliance, while implementing innovative solutions in cloud environments.

Overview

15
15
years of professional experience
1
1
Certification

Work History

Associate Consultant

HCL Tech Limited
09.2022 - Current
  • Managing Linux servers (Red hat 7 &8 and Oracle 6, 7 & 8)
  • Managing 5000+ Linux Servers
  • Managing multiple technical team of 20 members
  • Managing operational deliverables in terms of targets, including quality for a specific process on a day-to-day basis
  • Involved in training and develop team members in order to enhance team performance
  • Interact with Management and Clients regularly to determine the level of performance and improvement in certain areas
  • Involved in DR test workflow which has been done though SRM & Zerto application and make sure the support team understand their task for execution and validation
  • Managing to provide 24/7 support from offshore and on call for the Linux servers
  • Handled multiple meetings with clients by presenting the PPT presentation of Highlights, lowlights and service delivery trends of the UNIX tower
  • Involved in on boarding resources by evaluating their technical knowledge
  • Managing OS upgrade activity from RHEL 7.x to RHEL 8.x and Oracle Linux 7.X to Oracle Linux 8.X
  • Interact with customer and management to make any major activities as project to make revenue for the organization
  • Involved the audit compliance meetings and give justification to make the team compliance better
  • Involved in Planning, implementing and validating in the upgrading activity of tools like Splunk, Nessus, etc
  • Involved in creating RCA for any critical issues and provided permanent fix through problem tickets
  • Managing the top noise maker incidents and worked with support team for the permanent fix to avoid the incidents again
  • Involved in Data center migration for the Linux servers
  • Managing the vulnerability management and helps the client’s servers under compliance by clearing the vulnerabilities through patch management
  • Involved patching the Linux & oracle servers through Bigfix and bash script
  • Involved in creating Run books, SOP and project work orders
  • Involved in sending monthly reports to management like RU counts, Incidents counts and top noise makers counts
  • Involved with automation team to make the regular activity to automation like new build and decommission

Technical Lead

Cognizant Technology Solutions
09.2016 - 09.2022
  • Managing Linux servers (Red hat 5, 6 and 7)
  • Managing 5000+ Linux servers and 50+ AIX servers
  • Provide technical support to Test, Development and Production environments
  • Build new servers using VRA tool and manually in VMware
  • Build new physical servers through DRAC
  • Decommission the servers by following Decommission process
  • Disk management – Adding disks and creating partitions, LVM configuration and file system administration
  • Converting standard partition to LVM file system
  • Managing file system permissions for users and group
  • Have performed patching of RHEL servers via big Fix tool as well as manually using red-hat satellite server
  • Have successfully recovered the DR servers on both AIX and Linux Servers as part of Critical DR deliverable
  • Registering servers with Redhat SAM server for patch management
  • Managing OS upgrade activity from RHEL 6.x to RHEL 7.x and RHEL 7.X to RHEL 8.X
  • Migration activity taken care from RHEL 5.x to RHEL 7.X
  • Configure FTP for the file sharing
  • Configure SSHD configuration for the Domain connectivity
  • Enabling new services on boot up
  • Job scheduling and automating process using CRON for users
  • Kernel parameters tuning according to the standards defined in process
  • Have successfully implemented Aix to Linux server migration as part of oracle 12c Migration
  • Troubleshooting server-monitoring alerts from solar wind monitoring tool
  • Effectively involved in Linux Vulnerability remediation using NEXPOSE tool
  • Worked on CA unicenter and sparc Ticketing tools
  • Handled basic activities in VMware like VM migration, creating and deleting snapshots

Sr. Support Engineer

Neeyamo Enterprise Solutions PVT LTD
Chennai
07.2010 - 09.2016
  • Applying security patches using patch management
  • Configured IP Bonding for the redundancy of the applications
  • Setting up SAMBA servers, to enable Windows clients to communicate with Linux without the need of additional software on the Windows side, such as NFS clients
  • Configured yum configuration for installing/removing required rpm and enabling the services using chkconfig command permanently
  • Handling User, Group and File system management
  • Disk Management, Mount FS and AutoFS
  • Used LVM for dynamically extending and reducing partition sizes as and when the need arise
  • Periodically checking health for servers using Zabbix monitoring tool
  • Good Knowledge in FTP, NFS, Samba, ACL, basic knowledge on LDAP and configuring Crontab scheduler
  • Handling Desktop application installation and configuration; Installation, configuration and troubleshooting Linux Machines
  • Installing, Configuring and implementing open source GLPI Helpdesk tool for ticketing and maintaining Asset management
  • Implementing Cron Job for Scheduled Backup of the Shared Files
  • Configuring Open source DHCP Server using User helper command for different VLAN
  • Implementing ISO 9001 quality management in the functions
  • Implementing ISMS 27001 Security policy in the functions
  • Configure Default Routing in Cisco 2911 Router
  • Configure VLAN in Cisco 3750 L3 Switch
  • Implementing Policy Based Routing (PBR) in Cisco 3750 L3 Switch for Different Gateways
  • Preparing the Monthly Report and presenting the report to the Management Team
  • Assigning the ticket to the team members
  • Planning for Data center implementation for the new center

Education

Bachelor of Engineering - Electronics and Instrumentation

PSVP Engineering College
Ponmar
01.2006

Diploma - ECE

SRM Polytechnic college
Chennai
01.2003

XII STD -

01.2001

X STD -

01.1999

Skills

  • RedHat [5,6,7 and 8]
  • Azure Cloud
  • Oracle Linux
  • Ubuntu
  • LibreOffice
  • Open sources like Adito VPN
  • GLPI
  • Moodle
  • Puppet (Basics)

Certification

  • REDHAT Certified Engineer (RHSCA&RHCE) Version 6.0 in REDHAT Enterprise.
  • Cisco Certified Network Associate (CCNA)
  • Microsoft Certified in Installing, Configuring, and Administering Windows XP Professional (MCP).
  • Microsoft Azure Administrator Certified (AZ-104).

Disclaimer

I hereby declare that all the above furnished details are true to the best of my knowledge.

Timeline

Associate Consultant

HCL Tech Limited
09.2022 - Current

Technical Lead

Cognizant Technology Solutions
09.2016 - 09.2022

Sr. Support Engineer

Neeyamo Enterprise Solutions PVT LTD
07.2010 - 09.2016

Bachelor of Engineering - Electronics and Instrumentation

PSVP Engineering College

Diploma - ECE

SRM Polytechnic college

XII STD -

X STD -

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Senthilkumar K