Jessica Claire
  • , , 100 Montgomery St. 10th Floor
  • Home: (555) 432-1000
  • Cell:
Professional Summary

Motivated Linux System Administrator with proven knowledge in various open-source operating systems. Committed to improving network uptime and system availability.

  • Server Management
  • Multi-User System Management
  • System monitoring
  • Mass Storage Deployment
  • Samba proficiency
  • Linux
  • Knowledge with RedHat
  • Skilled in Apache
  • Servers expertise
Work History
Linux System Administrator, 05/2020 to Current
Criterion SystemsSpringfield, VA,
  • Skilled in Linux System Administration in Red Hat-Linux and Windows environments.
  • Experienced in working with different teams such as Network Engineering, Database team, automation team and application teams to complete and support IT projects focused on customer satisfaction.
  • Provide regular support in various environments like Dev, Stage, Test and Production.
  • Managed on prem user access with NIS and active directory.
  • Regularly used Ansible ad-hoc commands and Ansible playbooks for configuration management and automated various admin tasks.
  • Worked with GIT version control platform using GitHub to manage code and create repositories, packages and scripts.
  • Regularly performed automation using Bash Shell and Ansible playbooks.
  • Worked with Dev teams on CICD pipelines to update application and provide ongoing support.
  • Experienced in the use of Jenkins, SonarQube, Nexus, Nessus, GitHuB, Gitlab to allow for a seamless CICD pipeline.
  • Skilled in File-share application like Samba, FTP, for data storage and easy accessibility.
  • Skilled in User Management by creating, modifying user accounts and groups, assigned permissions and configured access to various systems.
  • Provisioned servers through Pxeboot and Kickstart using customized configurations and templates.
  • Managed disk and filesystem volumes, Raid levels and LVM.
  • Configured SAN multi-pathing, created LVM and as well as installed, configured and implemented RAID Technologies.
  • Installed and configured Web hosting administration using HTTPD, TOMCAT, NGINX and FTP.
  • Modified kernel parameters with sysctl -p and tuned system configuration.
  • Resolved system alerts and responded to incidents generated from Service Now.
  • Monitoring systems through Nagios for reliability and uptime of the IT infrastructure.
  • Expert understanding of infrastructure servers such as; DNS, NIS, NFS, DHCP, FTP, VSFTPD and etc.
  • Maintained local Linux iptables / firewalld to comply with security policies.
  • Provisioned and deployed servers in VMware, AWS and as well as on BareMetal.
  • Designed disaster recovery systems, enabling continuity in event of any undesired eventualities.
Linux System Administrator, 01/2018 to 04/2020
Criterion SystemsMclean, VA,

• Responsible for complete application and system support.

Provided around the clock support on Windows, Linux RHEL, and Ubuntu servers
• Responsible for applying patches to dev and prod systems on monthly basis
• Administered operating systems, networks and computer hardware in a versatile environment
• Worked in a Linux team with over 1000+ RHEL servers and performed day to day admin tasks.
• Configured password-less setup and agent-forwarding done for SSH login using ssh-keygen tool.
• Created and maintained network users, user environment, directories, and servers security using SELinux and Iptables
• Provided the support of building the servers, patching, user administration tasks, deployment, resolving issues, software installation and performance tuning.
• Configured and troubleshooted TCP/IP network services
• Worked with KVM Hypervisor to install, configure and maintain Red Hat Linux
• Deployed latest patches for Linux RPMs and appliance servers and performed Red Hat Linux kernel tuning
• Worked closely with vendors to open support cases to resolve complex issues.
• Performed server's consolidation and virtualization on VMware virtual infrastructure, VMware ESXi 6.x and v- motion center.
• Installed and configured DHCP, DNS, Apache, IIS, mail SMTP, IMAP, POP3, and file servers on AIX and Red Hat Enterprise Linux servers.
• Created Shell Scripts and scheduled via crontab and executed scripts for various tasks.
• Configured init levels and managed services through start / stop scripts.
• Troubleshooted system sluggishness due to CPU, memory bottle necks, I/O activities, network issues and worked to resolve performance issues.
• Performed operating system and firmware upgrades using vendor documentation
• Performed regular user management, process management and disk management on daily basis.
• Automated tasks using ansible scripts and modules across platform environments and operating systems .

Junior Linux System Administrator, 04/2017 to 12/2017
Modern Technology Solutions, Inc.Patrick Air Force Base, FL,
  • Interacted directly with users to diagnose and correct major system issues and address concerns.
  • Coordinated cross-site installation of networked systems, confirming post-install connectivity.
  • Resolved trouble tickets to reduce backlog.
  • Maintained smooth operation of multi-user computer systems through collaboration with hardware and network engineers.
  • Maintained flexible schedule and responded to after-hours and weekend emergencies.
  • Monitored networks and network devices and forward issues to senior administrator to resolve technical problems quickly.
  • Resolved issues and escalated problems with knowledgeable support and quality service.
IT Support Specialist, 01/2010 to 02/2017
Wolters KluwerCT, State,
  • Determined hardware and network system issues using effective troubleshooting techniques.
  • Created help desk tickets, troubleshot and resolved desktop issues.
  • Built and provided basic end-user troubleshooting and desktop support on Window.
  • Worked with software development team on reported errors and bugs on newly released software and assisted in deployment of release fixes.
  • Developed and tested new product offerings prior to release to assist development team in bug identification.
  • Trained and supported end-users with software, hardware and network standards and use processes.
  • Submitted service tickets for equipment maintenance requests.
  • Responded to support requests from end users and patiently walked individuals through basic troubleshooting tasks.
  • Performed tests of functionality, security and performance of different workstations and devices.
Post Graduate Diploma: Planning, Research And Statistics, Expected in
Federal University of Agriculture Abeokuta - Nigeria,
Higher National Diploma: Electrical, Electronics Engineering Technologies, Expected in
Federal Polytechnic Ilaro - Nigeria,
No Degree: Economics, Expected in
University of Ibadan - Nigeria,

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School Attended

  • Federal University of Agriculture Abeokuta
  • Federal Polytechnic Ilaro
  • University of Ibadan

Job Titles Held:

  • Linux System Administrator
  • Linux System Administrator
  • Junior Linux System Administrator
  • IT Support Specialist


  • Post Graduate Diploma
  • Higher National Diploma
  • No Degree

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