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Senior RedHat Administrator in Radford, VA at APEX Systems

Date Posted: 4/15/2019

Job Snapshot

Job Description

Job #:  951090

If interested in this opportunity - please contact Tia Bracken at

Candidates must be US Citizens eligible for DoD Secret Clearance as a precondition of employment.

Required Experience:  8+ years of experience as a Unix Systems Administrator/Engineer

Required Certifications:  

  • CompTIA Security+ or any other IAT Level II DoD 8570 approved baseline certification
  • CompTIA Linux+ or RHCSA/RHCE


Preferred Certifications:



Position Description:

This position is for a Systems Administrator for a mixed and growing environment of Red Hat Enterprise Linux/Oracle Enterprise Linux and Solaris UNIX.  This position will work with the existing UNIX team to manage, maintain, deploy, troubleshoot and support servers for a mixed customer environment.  This position will plan, execute and implement new system hardware and software and create and maintain team technical instructions, operating procedures and policies as needed.  This position will need to be adept at monitoring and tuning system performance, ongoing operation of the servers, hardening of the servers and reporting of the overall security and operational status. The position will also recommend improvements to the enterprise, and manage new software/hardware integrations when required. The position will need excellent communication and team skills.  This position will provide support towards the lifecycle of a mixed environment of vendor equipment in the datacenter to include firmware version control and periodic preventive maintenance. 

Required skills

  • SELinux – understand the basic and advanced management and configuration of SELinux
  • Scripting – be able to automate daily tasks when required
  • Patching – understand how to apply security updates to systems via YUM and RPM
  • Networking – have demonstrated experience using VLANs, troubleshooting tools such as ip, netstat, ss and telnet as well as how to harden a system using firewalld/iptables and hosts.allow
  • User Management – be able to manage a large pool of local users through the command line
  • System Hardening – have exposure to or understanding of the DISA STIG or its commercial equivalent and be able to demonstrate experience in system hardening and auditing
  • Virtualization – have demonstrated ability using VMWare and be able to maintain and build systems from templates or from scratch via system ISO file. Know how to access a VM from the console and perform troubleshooting where necessary
  • Storage – understand SAN/storage concepts (LUNs, HBAs), logical volume management (LVM) & NFS and how to utilize all of those at the OS level
  • Services – understand how SFTP/SMTP/NTP work and have a working understanding of how to configure and maintain each
  • Team Work/Communication – demonstrated interpersonal and teamwork skills as well as the ability to analyze and solve complex problems. This should include experience in designing, documenting and writing deliverable plans for enterprise implementations using Microsoft Office products such as MS Project and MS Visio.









EEO Employer

Apex is an Equal Employment Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by law. Apex will consider qualified applicants with criminal histories in a manner consistent with the requirements of applicable law. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation in using our website for a search or application, please contact our Employee Services Department at 844-463-6178