HPC Linux Systems Administrator (MSIC) with Security Clearance

COLSA Corporation is seeking a Linux Systems Administrator to support the Missile and Space Intelligence Center (MSIC) in Huntsville, Alabama. In this role, you'll help maintain and optimize the secure, high-performance computing (HPC) infrastructure that supports critical national security missions. From managing Linux servers and HPC clusters to supporting containerized environments, you'll play a key role in ensuring the reliability, performance, and security of mission-critical systems.

Responsibilities

• Drive the secure deployment and lifecycle management of Linux workstations, enterprise servers, and HPC clusters.
• E fficiently administer local and remote filesystems, ensuring data integrity and high-speed access across the network.
• E liminate manual toil by developing sophisticated automation scripts using Shell and Python.
• I mplement and manage robust security layers, including advanced firewall configurations and fine-tuned SELinux policies.
• D rive system consistency and rapid deployment using Ansible for configuration management and automation.
• M odernize workflows by deploying and managing containerized environments using Docker, Podman , and Apptainer .
• H PC Optimization : Maintain and push the performance limits of HPC clusters utilizing industry-leading tools like Bright, Slurm , and xCAT .
• C onfigure and optimize Linux networking services to ensure seamless, high-bandwidth connectivity.
• A uthor and maintain high-fidelity documentation for system configurations, operational playbooks, and strategic plans. At COLSA, people are our most valuable resource and are at the center of our core values. We invite you to unite your talents with opportunity and become part of our "Family of Professionals!" Learn more about our employee-centric culture and benefits here: https://colsa.com/culture_benefits Required Experience Required Qualifications
• Associate's degree or higher in Cybersecurity, Information Technology, or a related field, or equivalent experience
• 0-12 years of relevant experience. Position may be filled at varying levels based on the candidate's education and experience.
• M ust possess an active CompTIA Security+ CE, ISC2 SSCP, or equivalent baseline certification.
• P rofessional experience in Linux systems engineering (RHEL/Rocky preferred).
• U.S. Citizenship required; Must possess an active DoD Top Secret clearance with SCI eligibility. Candidates must be able to successfully complete a Counterintelligence (CI) Polygraph and meet eligibility requirements for Special Access Programs (SAP).

Preferred Qualifications

• Active DoD Top Secret Clearance with SCI and a Counterintelligence (CI) Polygraph with willingness to meet Special Access Program (SAP) eligibility requirements.
• C ertified in Linux with Linux+, RHCSA, LPIC, or similar Linux certification.
• D emonstrated experience with HPC Clusters.
• Virtualization Experience with Nutanix, KVM, Citrix, or similar. Applicant selected will be subject to a government security investigation and must meet eligibility requirements for access to classified information. COLSA Corporation is an

Equal Opportunity Employer, Minorities/Females/Veterans/Disabled. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, or national origin.