Senior Linux Administrator

DESE Research•Huntsville, AL

14h

About The Position

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

Requirements

Bachelor's degree in Computer Science, Math, Engineering, Physics, or STEM
Active DoD Top Secret with eligibility for SCI and a CI Scope Polygraph within 180 days of hire
Ability and willingness to obtain and maintain Special Access Program (SAP) eligibility
Active DoD 8570.01-M baseline certification (Security+ CE, SSCP, or equivalent)
Deep-tier professional experience in Linux systems engineering (RHEL/ /Rocky preferred)

Nice To Haves

Active TS/SCI clearance with a current CI Polygraph
RHCE, RHCSA, or similar
Direct experience tuning kernel parameters and MPI libraries for large-scale distributed computing
Expertise in VMware, Nutanix, or KVM within a heterogeneous environment that include Windows integration

Responsibilities

Lead the design and lifecycle management of mission-critical Linux workstations, enterprise-grade servers, and high-performance computing (HPC) clusters
Administer complex local and distributed filesystems (Lustre, GPFS/Spectrum Scale) to ensure extreme-speed access across the fabric
Develop sophisticated automation workflows using Python, Bash, and Ansible to eliminate manual toil and ensure drift-free configurations
Fine-tune SELinux policies and advanced firewall configurations to protect sensitive data without sacrificing computational performance
Deploy and manage isolated environments using Podman while working to establish a Kubernetes environment
Optimize cluster scheduling and management utilizing industry-leading tools like Bright Cluster Manager and Slurm
Configure and optimize high-bandwidth networking, including InfiniBand fabrics, for seamless inter-node communication
Author high-fidelity playbooks and strategic architectural diagrams that serve as the blueprint for our evolving infrastructure