Summary
Overview
Work History
Education
Skills
Timeline
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USAMA KHALID

Brooklyn,NY

Summary

Seasoned Linux Systems Administrator with 6 years of experience in troubleshooting and managing Linux environments. Expertise in Red Hat Enterprise Linux and related products like Red Hat Identity Management, Red Hat Satellite 6, and Ansible for configuration management. Proficient in DevOps tools such as Jenkins, Git, Docker, and Bash scripting. Strong team player with excellent communication skills, a collaborative approach, and a continuous learning mindset.

Overview

3
3
years of professional experience

Work History

Linux System Administrator

L'Oréal
03.2016 - 12.2018
  • Lead Linux systems architecture and implementation, administration of server infrastructure consisting of 100 servers, both physical and virtualized servers running VMWare ESXi
  • Ability to maintain a reliable and methodical approach to support and documentation
  • Day to day operations of our Linux servers include restarting processes, recovering used disk space by compressing or removing old log files, recovering disk space on the database servers by removing old bin files
  • Install and configure Red Hat/CentOS Linux on virtual environment using VMWare 4.x/5.x
  • Performed day to day administrative tasks such as creating user and group accounts, directory services, file systems shares, and permissions
  • Mounted resources using NFS and SAMBA exports on linux machines
  • Supported and maintenance VMWare ESXi in on premise data centers, racking and stacking physical bare metal servers
  • Managed Software package installations and updates using yum package management
  • Remotely administered the application servers using VPN and SSH
  • Password management, allow other users sudo access
  • Perform system updates and install required repos locally hosted and maintained
  • Installed and configured LDAP servers to authenticate between Linux, Apple and Windows environments
  • Setup and configured VMWare and RHEL in SAN environment
  • Performed memory and swap management to improve optimization and performance of the servers using free - h and top command
  • Utilizing top command to determine system calls and library calls to differentiate between user space resources and kernel space resources
  • Working close to departmental teams to obtain and maintain different components of the infrastructure, such as storage, network, backup, and security solutions
  • Manage printing, file sharing and network components like of TCP/IP protocol, DNS, and DHCP
  • Using RPM & YUM to install, uninstall, maintain and update RHELinux packages
  • Motivated and proficient team player with a quick to learn skills to achieve and maintain career growth.

Linux System Administrator

Imagine Software
  • Self-directed approach that demonstrates excellent working ethic, producing high quality results, and demonstrates attention to detail
  • Understanding of working in a team combining excellent interpersonal & communication skills verbal & written
  • Good understanding and experience in orchestrating automating build application process working along developing solutions and developers
  • On premise Red Hat Enterprise Linux architect planning, provisioning, deployment, lifecycle management until decommissioning process utilizing Red Hat Satellite 6 solutions available such as content view, host groups and activation keys
  • Worked on cloud platforms like Amazon Web Services to provision and deploy resources as needed
  • Familiarity with Amazon Web Services resources such as EC2, S3, Route53
  • VPC/Network Subnets, IAM, AMI
  • Utilizing NIS and IPA solutions for user authentication methods, utilizing openIPA command line based interface and Red Hat Identity Management
  • Utilized Red Hat Directory Services and then migrated to Red Hat Identity Management solution based on openIPA
  • Performed installation and configuration along with delegation with Red Hat in the efforts of working with Red Hat Satellite 6 and Ansible Tower
  • Wrote Ansible playbooks to automate and achieve goals while deploying configuration management changes across a large scale of servers
  • Integrated GIT sourced playbooks with Ansible projects to construct Ansible Tower Templates within the Ansible Tower console
  • Wrote and modify changes within Iptables and firewalld rules and policies within the RHEL operating systems to allow communication and deny based on the organizational requirements and compliance
  • Worked along database admins to install and troubleshoot Oracle RAC clusters
  • Allocated storage needs per application owner requests, along with server hardware resource changes to increase CPU and Memory
  • Modifying kernel parameters and modules by creating and running bash scripts to meet the requested requirements
  • Worked along security team to remediate vulnerabilities and other security concerns to lower the number of open risks on Linux servers, working along best practices for security hardening and procedures
  • Analysis of bottlenecks of processes, CPU, network, disk, memory and swap space troubleshooting to avoid any performance related issues and performance tuning.

Education

Associate of Science - Computer Information Systems

Kings Borough College
12.2020

Bachelor of Science - Computer Systems - BTECH

New York City College of Technology of The City University of New York
Brooklyn, NY

Skills

  • Linux System Administration
  • Self-directed
  • Working Ethic
  • Attention to Detail
  • Teamwork
  • Interpersonal Skills
  • Communication Skills
  • Orchestrating Automation
  • Build Application Process
  • Red Hat Enterprise Linux
  • Red Hat Satellite 6
  • Amazon Web Services
  • EC2
  • S3
  • Route53
  • VPC
  • Network Subnets
  • IAM
  • AMI
  • NIS
  • IPA
  • Red Hat Identity Management
  • Red Hat Directory Services
  • Ansible Tower
  • GIT
  • Iptables
  • Firewalld
  • Oracle RAC Clusters
  • Storage Allocation
  • Kernel Parameters
  • Security Hardening
  • Performance Tuning
  • Server Infrastructure
  • VMWare ESXi
  • Support and Documentation
  • Red Hat/CentOS Linux
  • User and Group Accounts
  • File Systems
  • NFS
  • SAMBA

Timeline

Linux System Administrator

L'Oréal
03.2016 - 12.2018

Linux System Administrator

Imagine Software

Associate of Science - Computer Information Systems

Kings Borough College

Bachelor of Science - Computer Systems - BTECH

New York City College of Technology of The City University of New York

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USAMA KHALID