Senior Linux Administrator

DESE Research, Inc. is seeking a Senior Linux Administrator to join our team in Huntsville, AL.  In this role the candidate will:  Architect & Deploy: Lead the design and lifecycle management of mission-critical Linux workstations, enterprise-grade servers, and high-performance computing (HPC) clusters.Engineer Filesystems: Master the art of data movement. Administer complex local and distributed filesystems (Lustre, GPFS/Spectrum Scale) to ensure extreme-speed access across the fabric.Infrastructure as Code (IaC): Treat the data center as a codebase. Develop sophisticated automation workflows using Python, Bash, and Ansible to eliminate manual toil and ensure drift-free configurations.Defensive Engineering: Implement "Hardened by Design" security. Fine-tune SELinux policies and advanced firewall configurations to protect sensitive data without sacrificing computational performance.Container Orchestration: Modernize scientific workflows by deploying and managing isolated environments using Podman while working to establish a Kubernetes environment.HPC Performance Tuning: Push the limits of the silicon. Optimize cluster scheduling and management utilizing industry-leading tools like Bright Cluster Manager and Slurm.Low-Latency Networking: Configure and optimize high-bandwidth networking, including InfiniBand fabrics, for seamless inter-node communication.Technical Documentation: Author high-fidelity playbooks and strategic architectural diagrams that serve as the blueprint for our evolving infrastructure Required Qualifications:  Education: Bachelor's degree in Computer Science, Math, Engineering, Physics, or STEM.Clearance: Active DoD Top Secret with eligibility for SCI and a CI Scope Polygraph within 180 days of hire.Program Eligibility: Ability and willingness to obtain and maintain Special Access Program (SAP) eligibility.Compliance: Active DoD 8570.01-M baseline certification (Security+ CE, SSCP, or equivalent).Linux Mastery: Deep-tier professional experience in Linux systems engineering (RHEL/ /Rocky preferred). Preferred Qualifications:  Clearance: Active TS/SCI clearance with a current CI Polygraph.Advanced Certification: RHCE, RHCSA, or similar.Supercomputing Experience: Direct experience tuning kernel parameters and MPI libraries for large-scale distributed computing.Hybrid Virtualization: Expertise in VMware, Nutanix, or KVM within a heterogeneous environment that include Windows integration. About DESE:For the past 43 years, DESE has provided industry-leading technical and engineering solutions in the fields of Defense, Energy, Space, and Environment. As a small, family-oriented business, DESE provides a compelling benefits package including a generous profit-sharing plan, competitive salaries, and perhaps most importantly, the opportunity to work alongside talented engineers leveraging cutting-edge technologies to solve complex and engaging problems.Why employees love working for DESE:At DESE, we are committed to creating a company that is known for its respect and care for employees. We understand that happy employees are what keeps our business going and we strive to provide the best opportunities for each individual working on our team! Here are a few reasons you will love working here: Competitive health, dental and vision insurance with affordable premiums Flexible work schedules Two different flexible spending account options Company paid life insurance with options for employee paid additional Performance bonus program Education reimbursement program Company paid personal leave for approved philanthropic activities Vacation, Sick & Holiday leave Robust 401k profit sharing plan Opportunities for internal promotions Employee referral incentive program Rewards and gifts for service anniversaries Disability Accommodation for Applicants – DESE Research, Inc. is an Equal Employment Opportunity employer and provides reasonable accommodation for qualified individuals with disabilities and disabled veterans in its job application procedures. If you have any difficulty using our online system and you need an accommodation due to a disability, you may use the following alternative email address or phone number to contact us about your interest in employment with us: or 256-837-8004 x123

Created: 2026-03-10