Linux Systems Administrator

Quadrant, Inc.; Atlanta (GA); On-site; USD 112,500 - 137,500; Full time

Benefits offered by this job

Healthcare benefits

Job summary

Quadrant, Inc. is seeking a highly experienced Linux Systems Administrator in Atlanta, GA. The role focuses on designing, deploying, and maintaining Red Hat Enterprise Linux server environments with advanced automation and security hardening.

The candidate should have 10+ years of Linux/UNIX experience, RH certifications, and strong scripting skills. On-call duties and collaboration across teams are essential, with healthcare benefits offered.

Qualifications

• Linux/UNIX administration with interoperability to Windows.
• Bachelor's degree or equivalent experience in a related field.
• Strong scripting abilities in Bash, Perl, Python, or JavaScript.
• Experience with automation tools like Ansible and RHEL Satellite.
• Experience configuring and managing NFTables, Firewalld, IPTables, DNS, TCP/IP, and mail relay.

Responsibilities

• Design, implement, and maintain RHEL 8/9 server environments.
• Develop and maintain automation scripts in Bash/Python/Perl/JS.
• Perform admin and O&M tasks from the command line.
• Manage automation with Ansible and RHEL Satellite.
• Handle package management across distributed environments.
• Configure and manage DNS, firewall, and network protocols.

Skills

Linux Admin

Public Trust

RHCSA/RHCE/RHCA

Scripting (Bash/Perl/Python/JS)

Automation tools

Networking basics (NFTables, IPTables,

Education

Bachelor's degree in CS/IS/Cybersecurity or related field

Tools

Ansible

RHEL Satellite

Mirantis Container Runtime

AWS

GitLab

Job description

Linux Systems Administrator

Atlanta, GA

Pay From $125,000

Mandatory Qualifications

• 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 GitLab.
• 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).

Responsibilities

• 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 GitLab.
• 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.