Systems Administrator- Linux / Social Media Services Administrator

Cornerstone Defense LLC; Maryland; On-site; USD 170,000 - 195,000; Full time

Job summary

Cornerstone Defense LLC is seeking a Systems Administrator (SA2) to join a Linux-focused team supporting Social Media Services in a hybrid cloud environment in Annapolis Junction, MD. The role requires TS/SCI with Full Scope Poly and offers a pay range of $170K-$195K per year.

Responsibilities include building and maintaining Linux systems, deploying services, writing automation, and collaborating with a small team to design solutions across multiple networks.

Qualifications

• Ten years of Systems Administrator experience on programs of similar scope.
• Bachelor's degree in a technical discipline, or five additional years of experience in lieu.
• Must comply with DoD 8570.01-M with IAT Level II certification (Security+, CCNA).

Responsibilities

• Build, configure, monitor, and troubleshoot Linux systems across networks and architectures.
• Deploy and maintain COTS and FOSS services on Linux environments.
• Develop automation solutions using Bash, Python, Puppet, Ansible, or similar tools.
• Contribute to system architecture discussions and solution design.
• Collaborate in a small team to resolve issues and maintain stability.
• Identify opportunities to automate tasks and improve efficiency.
• Communicate issues clearly with team members and service owners.
• Support and mentor junior staff as needed.

Skills

Linux admin

Automation scripting

COTS/FOSS deployment

Team collaboration

Communication

AWS (desirable)

Education

Bachelor's degree in a technical discipline

Tools

aws-cli

boto3

Puppet

Ansible

Job description

Systems Administrator (SA2) - Linux / Social Media Services Administrator Annapolis Junction, MD Clearance: TS/SCI w/ Full Scope Polygraph Pay Range: $170K - $195K Cornerstone Defense, in partnership with our military, intelligence, and civil government customers, supports U.S. operations worldwide through advanced intelligence, satellite, and cyber technologies. Our Intelligence Sector provides support and solutions for information collection, operations, exploitation, dissemination, and research activities. Our specialists focus on software development, cloud architecture, systems engineering, and network engineering across key DoD and Intelligence Community organizations. We are seeking an innovative and motivated Systems Administrator (SA2) to join a small, talented Linux team supporting Social Media Services in a hybrid cloud environment. This role provides the opportunity to design architectures, develop solutions, and contribute to mission-critical systems across multiple networks and infrastructures. The Linux team builds, maintains, secures, and troubleshoots Linux systems across diverse environments. The ideal candidate brings hands-on Linux administration expertise, strong scripting and automation abilities, and an eagerness to streamline processes. Experience with AWS technologies is highly desirable. The role requires creative problem-solving, collaboration in a small team, and the ability to communicate clearly with technical stakeholders.

Primary Responsibilities

• Build, configure, monitor, and troubleshoot Linux systems across multiple networks and architectures.
• Deploy and maintain COTS and FOSS services on Linux environments.
• Develop, debug, and implement automation solutions using Bash, Python, Puppet, Ansible, or similar tools.
• Contribute to system architecture discussions and solution design.
• Work within a small technical team to resolve issues and maintain system stability.
• Identify opportunities to automate tasks and improve efficiency.
• Communicate system issues effectively with team members and service owners.
• Support and mentor junior team members as needed.

Required Skills

• Strong Linux administration experience (configuration, monitoring, troubleshooting, lifecycle management).
• Experience deploying COTS/FOSS applications and services on Linux systems.
• Experience creating and debugging automation scripts using Bash, Python, Puppet, and/or Ansible.
• Experience collaborating with diverse technical teams to troubleshoot issues.
• Self-motivated, adaptable, and eager to learn new technologies.
• Strong communication skills for coordination with team members and service owners.

Desired Skills

• Experience with AWS (EC2 Auto Scaling, cloud automation, cloud integrations).
• Experience using aws-cli and boto3.
• Ability to collaborate effectively in a team environment and mentor junior staff.

LCAT Requirements

• Ten (10) years of experience as a Systems Administrator supporting programs of similar scope, type, and complexity.
• Bachelor's degree in a technical discipline from an accredited university. Substitution: Five (5) additional years of experience may replace the bachelor's degree.
• Must comply with DoD 8570.01-M requirements with a minimum IAT Level II certification (Security+, CCNA).