Linux Systems Administrator

Linux Systems Administrator

Atlanta, GA

Pay From $125,000

• Linux Administrator
• Public Trust mandatory
• Current Red Hat certification (RHCSA, RHCE, or RHCA) mandatory
• 10+ years of experience with Linux/UNIX systems and interoperability with Windows.
• Strong scripting skills in Bash, Perl, JavaScript, or Python.
• Experience with Ansible, RHEL Satellite, and other automation tools.
• Experience configuring and managing NFTables, Firewalld, IPTables, ISC2 BIND DNS, TCP/IP, IPv4/IPv6, Postfix/SMTP Relay.
• Familiarity with Mirantis Container Runtime, AWS, and Git Lab.
• Excellent problem solving, communication, and documentation skills.
• Ability to work independently and collaboratively in a team environment.
• Bachelor's degree in Computer Science, Information Systems, Cybersecurity, or related field (or equivalent education and experience).

• Design, implement, maintain, and troubleshoot Red Hat Enterprise Linux (RHEL 8/9) Server environments.
• Develop and maintain advanced automation scripts using Bash, Perl, JavaScript, or Python.
• Perform administration and O&M tasks from the command line.
• Manage task automation using tools like Ansible and RHEL Satellite.
• Handle package management across geographically dispersed environments.
• Configure and manage NFTables, Firewalld, IPTables, ISC2 BIND DNS, TCP/IP, IPv4/IPv6, Postfix/SMTP Relay.
• Administer Linux Server Clustering, NFS v3/v4, PXE boot, and SELinux.
• Support Mirantis Container Runtime (formerly Docker), AWS, and Git Lab.
• Maintain detailed documentation for system designs, configurations, processes, and service records.
• Collaborate with cross-functional teams to support IT infrastructure projects.
• Lead and mentor junior team members.
• Troubleshoot and resolve LAN/WAN connectivity and performance issues.
• Ensure compliance with security hardening standards (CIS, NIST SP 800-53 Rev. 5, DISA STIGs).
• Participate in 24/7/365 on-call rotation.

Quadrant is an affirmative action / equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, status as a protected veteran, or status as an individual with a disability. Healthcare benefits are offered to all eligible employees according to compliance mandated by the Affordable Care Act.