Linux Administrator Sample Resume

Company: Certiology - Everything Certification
Location: San Diego
Posted on: June 1, 2025

Job Description:

WORK EXPERIENCESr. Linux Systems Administrator, Ohio State University Dec 2008 - Current

• Act as liaison with vendors on computer hardware, software, MIS systems and specialist application issues.
• Maintain contacts with other educational institutes on application technology practices and initiatives of common interest.
• Monitor systems for performance to agreed business expectations or beyond.
• Monitor and report on system and database backups to ensure they are appropriately configured, implemented and verified to enable recovery from failure.
• Undertake appropriate updates and testing on system infrastructure ensuring continuous peak performance.
• Identify and assist in troubleshooting system errors and faults offering viable solutions to fix them.
• Assist with implementation of system patches and updates managing upgrades effectively and to user requirements.
• Monitor and maintain appropriate security environments and policies on Windows and Linux servers.
• Administer Windows and Linux systems with appropriate scripting and coordinate related administrative tasks.
• Maintain established testing and development environments.
• Provide support for server-side applications e.g. Finance, HRIS, Websphere and Oracle application server based applications, web server based applications etc.
• Ensure that support is focused on the server side of multi-tier applications with close liaison with appropriate desktop specialists for client side issues.
• Coordinate efficient escalation of issues with internal development staff or vendors ensuring that issues are only escalated after thorough diagnosis of the problems and that they are clearly documented prior to escalation.
• Contribute to the development and implementation of technology standards.
• Provide input to system and database performance and management.
• Participate in project development as required providing project plans, documentation and training material as necessary.
• Inventory University, Engineering and Production IP names and address spaces.
• Participate in the build of a Bind 9 DNS server infrastructure with functional and organizational sub-domains.
• Generate named zone files from inventoried internal IP name/address space.
• Configure BMC Blade Logic to implement UNIX hosts in production environment.
• Execute BMC Blade Logic architecture to allow puppet-like configuration from text files.
• Contribute to team activities and complete assigned tasks within prescribed deadlines.
• Keep abreast of IT industry trends and developments by updating Industry qualifications and reading appropriate literature.
• Undertake appropriate IT technical research and investigation as needed.EDUCATIONOhio State University, 2007 BSc Computer Technology GPA 3.95Jeffrey Higgins 540 Magenta AvenueSan Diego, CA 92120Cell (685) 258-9631jeffhiggins@gmail.comOBJECTIVESeasoned professional looking for a challenging and versatile system administration position that requires creative and innovative applications of technology in order to solve business problems.WORK EXPERIENCETransitCorp Software and Tech Linux System Administrator June 2009 - Current
  • Responsible for building a personal multi-node OpenStack cluster using a packsack called Cloud5 and RDO.
  • Inspect, create, modify and administer user and admin identities and roles such as keystone user, tenant, role creator to tenant, user and admin identities.
  • Create custom CentOS 6.5 base images using glance image-create, image-info and qemu tools.
  • Undertake testing of systems to system specifications, working parameters and user requirements.
  • Undertake deployment of internally and externally developed software into production in accordance with change control processes.
  • Inform ICT staff of any new applications or supporting infrastructure and the impact of such changes to manage change and to ensure systems are effectively supported.
  • Contribute to the development of documentation of system configurations and procedures.
  • Test implementation of upgrades and changes prior to production release so that change is managed.
  • Set up debugging and performance tuning of Linux servers.
  • Manage security of Linux servers using SELinux, iptables, and rkhunter to harden the OS.
  • Liaise with other IT staff to ensure optimum system performance and reliability, and in the development and execution of ICT projects.
  • Coordinate with staff at all levels within the organization on effective application and use of enterprise systems and databases.
  • Cooperate with key users of enterprise applications such as management and administrative staff to identify new IT projects and manage systems change.
  • Coordinate tutorials on system integration and offer advising about the effective usage of systems.
  • Provide specialist technical support for staff in preparing business resources e.g. advice on ICT technologies, assistance with the implementation of new technologies requiring server resources.
  • Preparation of reports on areas of functional expertise for consideration by management.TECHNICAL SKILLS
    • TCP/IP infrastructure: Internal named DNS server, Send mail SMTP relay, rsyslog server.
    • Web server applications: Apache PHP, Tomcat, replicated MySQL, FE/API servers.
    • Linux networking: IP tables for packet filtering, NATing and traffic shaping, Linux bridging.
    • Experience with maven / ant java build environments.
    • nagios, cacti and MRTG for network monitoring.
    • Hardware configuration/ordering, software/hardware RAID, 1GB Ethernet switches/cables.
    • KVM based virtualization with libvirt, virsh, qemu, LVM partitions, qemu xml files, Linux bridging.
    • Basic MySQL database skills.EDUCATION:February, 2009 University of South California Systems EngineeringObjectiveHighly qualified Linux System Administrator currently looking for positions that incorporate my skills in systems security, system administration, and programming.ExperienceLinux Systems Administrator, Startech, White Plains, NY January 2008 - current
      • Design, implement and maintain RADIUS (OSC Radiator) in a production environment providing authentication for over 1 million dialup users in South America.
      • Administer 100+ Redhat Linux, AIX, Solaris and FreeBSD servers.
      • Monitor Intrusion Detection systems with automated patch updates to all servers and tools like Snort/ACID.
      • Perform vulnerability assessment of business systems routinely and provide incident reports / handling as well as respond to attacks on the systems.
      • Program tools in PERL and C for use in system administration, security purposes, and automation.
      • Administer firewalls using iptables/ipchains (Linux) and IPFilter (FreeBSD/Solaris).
      • Implement automated installations using Kickstart and Jumpstart.
      • Write policies and procedures about the secure deployment of Solaris, Linux and AIX in insecure and non-firewalled environments.
      • Provide administration of MySQL and Oracle database for core services including RADIUS authentication and WWW.
      • Facilitate product development and administration of dedicated Linux servers, business managed services, and web hosting platforms.
      • Facilitate migration procedures and methods from outsourced mail hosting providers.
      • Create and setup subsystems for high volume outgoing mail using Postfix, an open source mail system.
      • Setup, operate and maintain company-wide services such as mail (UW-IMAPD, sendmail, qpopper), DNS (BIND v8), WWW Apache / SSL, DHCP (ISC), and Samba.
      • Administer Network Appliance F840 & F760 clustered NASes, EMC Symmetrix, and other storage subsystems.
      • Setup 24--7 NOC monitoring and trouble ticket systems using open source tools such as Big brother, Netsaint, Request Tracker, as well as commercial tools such as Footprints and Netcool.
      • Develop internal monitoring systems which are deployed throughout South America.
      • Maintain open source packages that have been developed in house, responding to user suggestions, and integrate improvements in the software.TECHNICAL SKILLS
        • AIX 4.3 and 5L.
        • FreeBSD.
        • Mac OS X 10.3.
        • Windows XP/2000/NT.
        • C (especially UNIX system programming).
        • Python.
        • PERL.
        • Shell (Bash).
        • SQL.
        • Solaris 2.x.EducationSUNY Purchase University, Purchase, NYBachelor of Science in Computer Engineering (GPA 3.9/4.0)Graduation date: May, 2007Certifications
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