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
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Work History
Linux System Administrator02/2016
to Current
Asrc Federal Holding Company – Bethesda , MD
Asrc Federal Holding Company – Bethesda , MD
- 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
Asrc Federal Holding Company – Redstone Arsenal , AL
Asrc Federal Holding Company – Redstone Arsenal , AL
- 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
Aac Asssociates Inc – Montgomery , AL
Aac Asssociates Inc – Montgomery , AL
- 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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