Linux (RHEL) Operating Systems Lead

TekSynap•Rockville, MD

4d•Onsite

About The Position

The Linux (RHEL) Operating System Lead is responsible for the administration and optimization of Red Hat Enterprise Linux (RHEL) systems supporting the NRC’s High Performance Computing System (HPCS), including the Computational Fluid Dynamics (CFD) cluster and cloud-based environments.

Requirements

7+ years of experience in Linux system administration (RHEL preferred)
Linux system performance tuning
Shell scripting (Bash, Python)
System monitoring tools
Experience supporting HPC environments or compute clusters
Virtualization (VMware)
Cloud environments (AWS GovCloud, Azure)
Knowledge of FISMA, NIST, and federal security standards
Strong troubleshooting and analytical skills
Bachelor’s degree in IT, Computer Science, or related field (or equivalent experience)
Must be able to obtain and maintain an NRC security clearance (Public Trust or higher)
U.S. Citizen

Nice To Haves

Red Hat certifications (RHCSA, RHCE)
HPC schedulers (e.g., Slurm, PBS)
Parallel computing environments
Experience with scientific/engineering tools (e.g., ANSYS, CFD applications)
Automation tools (Ansible, Puppet)

Responsibilities

Administer and maintain RHEL-based systems in standalone and cloud environments
Support HPC/CFD Linux cluster operations, including performance tuning and job scheduling
Install, configure, and maintain scientific and engineering applications (e.g., ANSYS, Nek5000)
Monitor system health, performance, and availability
Troubleshoot system failures and restore services quickly
Implement security patches, updates, and vulnerability remediation
Support continuous monitoring and FISMA compliance activities
Manage user accounts, permissions, and access controls
Configure networking, storage, and cluster components
Maintain system documentation, scripts, and operational procedures
Automate administrative tasks where possible
Support system upgrades, capacity planning, and scaling
Collaborate with stakeholders and participate in technical planning discussions
Monthly status and asset reporting
Participation in system health reviews and change control boards
Continuous improvement and modernization of systems
Maintain high availability and operational readiness of HPCS systems