Senior Linux Engineer — Classified HPC & Security

Oak Ridge National Laboratory; Oak Ridge (TN); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Prescription Drug Plan

Dental Plan

Vision Plan

401(k) Retirement Plan

Contributory Pension Plan

Life Insurance

Disability Benefits

Generous Vacation and Holidays

Parental Leave

Legal Insurance with Identity Theft 保护

Employee Assistance Plan

Flexible Spending Accounts

Health Savings Accounts

Wellness Programs

Educational Assistance

Relocation Assistance

Employee Discounts

Job summary

Oak Ridge National Laboratory is seeking a Linux Engineer to design, build, and modernize highly secure Linux infrastructure supporting classified missions. You will own mission-critical accounts and collaborate with a focused team to deliver resilient, scalable systems with RMF/NIST compliance.

The role requires deep Linux expertise, automation focus, and the ability to operate across security domains, with Top-Secret clearance access to Q/SCI.

Qualifications

• BS degree in a related technical field and at least five years of Linux engineering or administration experience.
• Current Top-Secret clearance with Q and SCI eligibility.
• Demonstrated expertise with RHEL/Linux engineering, troubleshooting, performance tuning, automation, and scripting.
• Experience with Ansible, Python, Bash, enterprise virtualization, identity integration, storage, monitoring/logging, and cybersecurity compliance.
• Strong analytical and problem-solving skills with the ability to independently solve complex technical challenges and collaborate across multidisciplinary teams.

Responsibilities

• Engineer and modernize secure Linux infrastructure supporting classified environments using RHEL and related distributions.
• Design, build, configure, optimize, and sustain Linux platforms across multiple security domains.
• Develop automation using Ansible, Python, Bash, and Git-based workflows to improve deployment, patching, and compliance.
• Implement cybersecurity requirements including RMF, NIST 800-53, STIGs, DOE directives, and ICD 503.
• Integrate Linux with identity, virtualization, storage, backup, and monitoring capabilities (AD, LDAP, Kerberos, PKI, VMware, KVM).
• Troubleshoot complex issues and partner with cybersecurity, networking, storage, and mission teams to build secure solutions.
• Evaluate new technologies and architectures to advance modernization and mission capabilities.
• Support mission-critical operations, planned maintenance, and occasional after-hours requirements.

Skills

RHEL/Linux engineering

Troubleshooting

Automation

Scripting

Ansible

Python

Bash

Enterprise virtualization

Identity integration

Storage

Monitoring/logging

Cybersecurity compliance

Education

BS degree in a related technical field

Tools

Active Directory

LDAP

Kerberos

PKI

VMware

KVM

Job description

Oak Ridge National Laboratory is seeking a Linux Engineer to design, build, and modernize highly secure Linux infrastructure supporting classified missions. You will own mission-critical accounts and collaborate with a focused team to deliver resilient, scalable systems with RMF/NIST compliance.

The role requires deep Linux expertise, automation focus, and the ability to operate across security domains, with Top-Secret clearance access to Q/SCI.