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Linux System Administrator Resume Example

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LINUX SYSTEM ADMINISTRATOR
Professional Summary

Talented System Administrator focused on performance optimization and technical improvements with understanding of cost-effective decision making and usability. Progressive experience marked by continuous contributions above and beyond requirements. Career achievements in large-scale software deployments, network buildouts, and data security.

Skills
  • Debugging networks
  • Linux, Red Hat Linux (6x, 7x, 8) CentOS (6x, 7x, 8),
  • Security: Iptables, Firewall, Selinux, Firewall Rich Rule, ACL, SUDO
  • Microsoft Products: Microsoft Operating Systems, Active Directory, Office
  • Project management
  • System Admins skills and Tools: SSH, HTTP, HTTPS, DNS, DHCP, SMTP, Kickstart, LVM, ISCSi, NAS, Networking, static IP, Kernel Patching, WinSCP, Putty, FTP, SCP, SFTP, Telnet, Users Management, Samba, Git/GitHub, Ansible,
  • File system Type: NFS, EXT4, EXT3, VFAT,
    CIFS, XFS,
  • Hardware knowledge
  • System upgrades
  • Product Evaluation
Work History
Linux System Administrator02/2016 to Current
Company Name – City,State
  • Tuned system performance to optimize efficacy of new and existing hardware components.
  • Created, configured, and diagnosed user and group permissions to facilitate Systems security.
  • Experience in creation and managing user accounts, security, rights, disk space and process monitoring in approximately 2000 plus RedHat Linux
  • Configuring SUDO and granting root permission to users for performing certain activities.
  • Managing systems routine backup, scheduling jobs like disabling and enabling cron jobs, enabling system logging, network logging of servers for maintenance, performance tuning, testing.
  • Installation and upgrade of packages and patches configuration management, service pack & reviewing network connectivity issues
  • Managed software packages on RedHat Linux servers using rpm and yum.
  • Performed User/Group Account Administration; implemented password aging; monitored logins
  • Installed third-party applications on Linux servers
  • Created BASH shell scripts to automate cron jobs and system maintenance. Scheduled cron jobs for job automation.
  • Work with security team to modifying application users' password policies, group policy, UID and GID assignment policies.
  • Monitored performance of systems using top, sar, ps, vmstat, netstat, iostat, and cpuinfo to check CPU utilization, bottlenecks of I/O devices, memory usage and network traffic.
  • Experience creating and managing various file systems using LVM and, also configured filesystems through network using NFS, NAS, SAN methodologies and installed RAID devices.
  • Maintained system accounting files and logs and systems error logs
  • Installed and implemented new patches to Linux operating system software.
  • Perform server installation using Kickstart, Network, and DVD on physical servers, VMware.
  • Installing and configuring Apache Web server and supporting them on Linux production servers.
  • Implemented NFS, AutoFS, FTP, DNS, DHCP for administrative and project requirements as well SAMBA server for windows and Linux connectivity
  • Implement Linux server hardening using iptables, TCP Wrappers and ACLs on Red Hat Linux servers.
  • Check alert logs, trace files and file System maintenance using requisite system tools.
  • Supported developer in installation and configuration of puppet master and agent for automated deployments.
  • Decommissioning of old servers and keeping track or decommissioned and new servers using inventory list.
  • Troubleshoot various systems problems such as application related issues, network related issues, hardware
    related issues etc.
Linux System Administrator10/2011 to 02/2016
Company Name – City,State
  • Provided input on hardware and software purchasing, prioritizing return on investment to optimize IT spending.
  • Maintained smooth operation of multi-user computer systems through collaboration with hardware and network engineers.
  • Resolved vulnerabilities by making improvements to network security.
  • Managed backup and disaster recovery through strict data control and retention policies, personally handling recovery tasks when issues arose.
  • Diagnosed and executed resolution for all network and server issues.
  • Implemented NFS, AutoFS, FTP, DNS, DHCP for administrative and project requirements as well SAMBA server for windows and Linux connectivity.
  • Implement Linux server hardening using iptables, TCP Wrappers and ACLs on Red Hat Linux servers.
  • Troubleshoot various systems problems such as application related issues, network related issues, hardware related issues etc.
  • Served as integral resource (or leader) in projects, adhering to committed deliverables, and regular communication of progress to management.
  • Thoroughly documented all activity and keep senior staff and management informed.
Junior Linux System Administrator04/2008 to 08/2011
Company Name – City,State
  • Resolved issues and escalated problems with knowledgeable support and quality services.
  • Disabled services as required in attempt to minimize and or eliminate unauthorized server access.
  • Involved in Monitoring, performing file and group security, Access security, and Physical security.
  • Installed system-wide hardware components, confirming interoperation and compatibility with Linux-based software distributions.
  • Resolved vulnerabilities by making improvements to network security.
  • Performed network security design and integration duties.
    Monitored networks and network devices to resolve technical problems quickly.
  • Developed programs to integrate and update software products and improve system compatibility.
  • Provided comprehensive training to internal and off-site users to optimize systems maintenance and resolve recurring issues.
  • Orchestrated integration and communication of software upgrades.
Education
Bachelor of Arts: Political Science05/2004University Of Ghana Legon - City
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Resume Overview

School Attended

  • University Of Ghana Legon

Job Titles Held:

  • Linux System Administrator
  • Junior Linux System Administrator

Degrees

  • Bachelor of Arts : Political Science 05/2004

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