Senior Linux Systems Administrator – Social Media Services

Cornerstone Defense LLC; Columbia (MD); Hybrid; USD 170,000 - 200,000; Full time

Job summary

Cornerstone Defense LLC is seeking a Systems Administrator (SA2) to join a small Linux team supporting Social Media Services in a hybrid cloud environment near Annapolis Junction, MD. The role emphasizes hands-on Linux administration, scripting, and automation with strong collaboration across networks and stakeholders.

The ideal candidate has extensive Linux background, experience deploying COTS/FOSS on Linux, and familiarity with AWS tools.

Qualifications

• Extensive Linux administration experience required.
• Experience deploying COTS/FOSS on Linux.
• Strong scripting in Bash/Python; automation tooling.
• Clear communication with stakeholders.

Responsibilities

• Build, configure, monitor, and troubleshoot Linux systems.
• Deploy COTS and FOSS services on Linux.
• Develop automation with Bash, Python, Puppet, Ansible.
• Contribute to architecture discussions and design.
• Mentor junior team members and improve efficiency.
• Communicate issues with team and service owners.
• Support and maintain system stability.
• Identify opportunities to automate tasks.

Skills

Linux administration

Automation scripting

COTS/FOSS deployment

Team collaboration

Communication skills

Self-motivated

Education

Bachelor's degree in a technical discipline

Tools

AWS

aws-cli

boto3

Puppet

Ansible

Job description

Cornerstone Defense LLC is seeking a Systems Administrator (SA2) to join a small Linux team supporting Social Media Services in a hybrid cloud environment near Annapolis Junction, MD. The role emphasizes hands-on Linux administration, scripting, and automation with strong collaboration across networks and stakeholders.

The ideal candidate has extensive Linux background, experience deploying COTS/FOSS on Linux, and familiarity with AWS tools.