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Linux Administration - Engineering Side
Tulsa, Oklahoma  |  Hybrid
Direct Hire Position
It appears that you have already applied to this job.
Applied on January 28, 2023
Job Id #60989-tulsa Posted December 19, 2022

Linus Administration 
Need to Live within driving distance of Tulsa, OK in case of an onsite meeting. 

Initial Responsibilities
  • Server maintenance: execute procedures (e.g. patching) 
  • Automation configuration and troubleshooting
  • Review reports (e.g. vulnerability reports, access logs) 
  • 1st Level support
    • Incidents 
    • Troubleshooting
  • Server builds 
Must Haves
  • Linux Administration (preferred RedHat flavored Linux distributions: Red Hat, CentOS, CentOS Streams, Fedora)
    • Local user and group management 
    • Local firewall configuration (firewalld, iptables)
    • Service Management with systemd
    • Authentication with pam
    • Domain integration: sssd, realmd
    • Network configuration: check network settings, configure dhcp and static ip
    • Package Management with yum/dnf
    • Logging: Familiar with most important system log files, system journal (journalctl), log rotate
    • Storage Management: LVM2, local storage, san storage (multipath configuration), file systems (XFS, ext4)
    • File Transfer with vsftpd (ftp, ftps), openssh (sftp), rsync (rsync over ssh); use clients on cli to test connections (lftp, curl, rsync)
    • SELinux: Enable, disable, check for denials, configure
  • Automation /Configuration Management / Infrastructure as Code 
    • Red Hat Satellite or Foreman
    • Ansible Tower
    • Puppet
    • Git
    • YAML
  • Scripting 
    • Shell scripting
    • Python
    • Ruby
  • Troubleshooting
    • Authentication/authorization issues: check log files, check local user accounts, check domain accounts
    • Permission issues
    • Networking issues: familiar with ping, nslookup/dig, nmap
    • SELinux
Nice to Have
  • SSL Certificates
    • basics: base64 encode certs, java keystores (jks, pkcs12),
    • check certificates by URL and files: (openssl, keystore)
  • VMware
    • Login to server over VMware console
    • Extend resources: cpu, ram, storage
    • Add rescue boot iso and boot server in rescue mode

Horizontal is proud to be an Equal Opportunity and Affirmative Action Employer. We seek to provide employment opportunities to talented, qualified candidates regardless of race, color, sex/gender including gender identity and/or expression, national origin, religion, sexual orientation, disability, marital status, citizen status, veteran status, or any other protected classification under federal, state or local law.

In addition, Horizontal will provide reasonable accommodations for qualified individuals with disabilities. If you need to request a reasonable accommodation in order to complete the application or interview process, please contact

All applicants applying must be legally authorized to work in the country of employment.


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Horizontal is proud to be an Equal Employment Opportunity/Affirmative Action Employer providing a drug-free workplace.


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