Linux Systems Administrator

KARTHEEK VIKASH MEESALA

L I N U X A D M I N I S T R A T O R

Kingsville +1-361-***-**** ****************************@*****.***

Accomplished Linux Systems Administrator with 8 years of experience, specializing in RHEL environments and systems optimization. Expertise lies in installing, configuring, and troubleshooting various Linux distributions, ensuring robust system performance and security. Proficient in user and group administration, alongside developing efficient patch management systems to maintain up-to-date security protocols. Strong skills in managing storage solutions, including LUNs and storage pools, to enhance operational efficiency and data integrity. Committed to delivering reliable and secure IT infrastructure solutions.

Linux System Administration Vagrant Ansible Git & GitHub

Certified Scrum Master

Bash scripting

Certified AWS Solutions Architect Professional

Linux systems administrator at Fujitsu consulting India Pvt Ltd Aug 2022 – Dec 2023

Proficient in installing, configuring, and troubleshooting RHEL 6, 7.x, and 8.x.

Good understanding of User and Group administration. Managing User accounts, groups file systems and Security. Proficient in creating and managing LUNs and storage pools for optimized storage allocation and performance, utilising Dell EMC. Extensive experience with Logical Volume Manager (LVM).

Demonstrated proficiency in creating, resizing, and managing file systems as per specific requirements.

Managed system processes and scheduled jobs using crontab. Successfully troubleshooted OS, hardware, and network-related problems.

Effectively communicated with vendors to resolve unresolved issues, particularly those related to hardware failures or newly released updates.

Maintained compliance with all SLAs as defined by IT guidelines, skillfully handled incidents and service requests.

Implemented security measures, including Setuid, Setgid, Sticky bit, and ACL on Linux servers. Administered and managed DNS and Squid Proxy servers, ensuring high availability, security,

and efficient network performance through proactive monitoring and configuration management.

Skilled in patch management for Linux servers using YUM and RPM, with extensive experience automating updates and system configurations through Puppet and Red Hat Satellite to optimize security and maintain system integrity.

Good knowledge on cloud technologies like AWS.

Linux Administrator at JASAM Technologies private limited May 2018 – June 2022

Responsible for Day-to-Day tickets on performance issues, disk usage, memory issues and FS thresholds.

Involved in User Administration, Security Administration, Disk Management, networking service, performance and resource monitoring.

Joining/initiating bridge calls during outage/patching. Handling host downs for both virtual and physical servers.

Serving users and troubleshooting day to day issues through ticketing system using Service Now tool.

Configuring LVMs and adding additional disk space as and when required.

Creating a new file system and extending application/data base related file systems as per the client requirement.

Communicating with the application and DB teams and performing monthly server reboots/patching activities as per the client’s requirement.

Sudo user’ s configuration.

Basic understanding of swap configuration and memory management.

Mounting & Unmounting of Filesystems, creating new filesystems, removing the filesystems.

Monitoring and optimizing system performance and reliability. Maintaining a scheduled process through CRON.

Linux Administrator at Quantyum Technology Solutions Pvt Ltd Aug 2015 to Apr 2018

•Installation, configuration, troubleshooting Red hat, Suse, Cent OS.

•Delivering 24x7 production support on mission critical servers running on Linux Environment.

•Linux OS patching through satellite server and Ansible.

•Firmware Upgrades Including Vulnerability Remediation.

•Tracking all the Incidents and Tasks through ticketing tools such as Service Now, JIRA.

•Day to day troubleshooting and resolving software or OS based issues on systems such as performance, configuration, connectivity, network issues etc.

•Troubleshooting Hardware based issues on systems such as disk issues, memory, CPU issues liaising with vendors (Oracle, HP) for hardware related issues.

•Checking the file system alerts and creating the file system as per requirement.

•User administration, creating Users, Groups and giving permissions as requested.

•Managing customer service operations for rendering and achieving quality services, ensuring compliance with Service Level Agreement.

Graduate in Computer science engineering

Texas A&M University, Kingsville (GPA – 3.88/4.00)

2024-2025

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