Linux Systems Administrator (MSIC)

At the intersection of national security and high-performance computing, we are looking for a Linux Systems Administrator who thrives on complexity. You won’t just be patching servers; you’ll be the architect of the infrastructure supporting our most critical missions. From tuning HPC clusters to orchestrating secure containerized environments, your work ensures that our data stays fast, fluid, and impenetrable.

Responsibilities

• Drive the secure deployment and lifecycle management of Linux workstations, enterprise servers, and HPC clusters.
• Efficiently administer local and remote filesystems, ensuring data integrity and high-speed access across the network.
• Efficiently administer local and remote filesystems, ensuring data integrity and high-speed access across the network.
• Eliminate manual toil by developing sophisticated automation scripts using Shell and Python.
• Implement and manage robust security layers, including advanced firewall configurations and fine-tuned SELinux policies.
• Drive system consistency and rapid deployment using Ansible for configuration management and automation.
• Modernize workflows by deploying and managing containerized environments using Docker, Podman, and Apptainer.
• Maintain and push the performance limits of HPC clusters utilizing industry-leading tools like Bright, Slurm, and xCAT.
• Configure and optimize Linux networking services to ensure seamless, high-bandwidth connectivity.
• Author and maintain high-fidelity documentation for system configurations, operational playbooks, and strategic plans.

At COLSA, people are our most valuable resource and centered at our core value. We invite you to unite your talents with opportunity and be a part of our “Family of Professionals! Learn about our employee-centric culture and benefits here: https://www.colsa.com/culture_benefits/

Required Qualifications

• Bachelors Degree in related field or equivalent experience
• Minimum of 5 to 12 years of work related experience
• Professional experience in Linux systems engineering (RHEL/Rocky preferred)
• Active/Current CompTIA Security+ CE, ISC2 SSCP, or equivalent baseline certification.
• Ability to obtain Special Access Program (SAP) eligibility and maintain program access as required
• U.S. Citizenship required; Must possess (or be able to obtain) a DoD Top Secret Clearance with SCI eligibility including successful completion of a Counterintelligence (CI) Polygraph within 180 days of hire date

Preferred Qualifications

• Active DoD Top Secret Clearance with SCI and a Counterintelligence (CI) Polygraph
• Linux+, RHCSA, LPIC, or similar Linux certification
• Demonstrated experience with HPC Clusters
• 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.