Linux (RHEL) Operating Systems Lead

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., + 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

Deliverables & Expectations

• Monthly status and asset reporting

• Participation in system health reviews and change control boards

• Continuous improvement and modernization of systems

Experience

• 8+ years of experience in Linux system administration (RHEL preferred)

• Strong experience with:

• Linux system performance tuning

• Shell scripting (Bash, Python)

• System monitoring tools

• Experience supporting HPC environments or compute clusters

• Familiarity with:

• Virtualization (VMware)

• Cloud environments (AWS GovCloud, Azure)

• Knowledge of FISMA, NIST, and federal security standards

• Strong troubleshooting and analytical skills

Education

• Bachelor's degree in IT, Computer Science, or related field (or equivalent experience)

Clearance

• Must be able to obtain and maintain an NRC security clearance (Public Trust or higher)

Preferred Qualifications

• Red Hat certifications ( RHCSA, RHCE )

• Experience with:

• HPC schedulers (e.g., Slurm, PBS)

• Parallel computing environments

• Experience with scientific/engineering tools (e.g., ANSYS, CFD applications )

• Automation tools (Ansible, Puppet), The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. While performing the duties of this job, the employee is regularly required to use hands to handle, feel, touch; reach with hands and arms; talk and hear. The employee is regularly required to stand; walk; sit; climb or balance; and stoop, kneel, crouch, or crawl. The employee is regularly required to lift up to 10 pounds. The employee is frequently required to lift up to 25 pounds; and up to 50 pounds. The vision requirements include close vision, distance vision, peripheral vision, depth perception, and ability to adjust focus.

We offer our full-time employees a competitive benefits package to include health, dental, vision, 401K, life insurance, short-term and long-term disability plans, vacation time and holidays.

TekSynap is a drug-free workplace. We reserve the right to conduct drug testing in accordance with federal, state, and local laws. All employees and candidates may be subject to drug screening if deemed necessary to ensure a safe and compliant working environment.

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