Senior Linux Engineer for Classified HPC & Secure Infra

Oak Ridge National Laboratory; Tennessee; On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

Relocation assistance

Excellent benefits

Job summary

Oak Ridge National Laboratory seeks an experienced Linux Engineer to design, build, secure, and modernize high-assurance Linux environments supporting classified and scientific missions. You will own mission-critical accounts, automate deployments, and ensure compliance across multiple domains in a fast-paced team.

The role emphasizes advanced Linux engineering, cybersecurity integration, and collaboration with researchers and engineers to deliver resilient, scalable systems that meet stringent

Qualifications

• BS degree in a related technical field with 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, primarily using Red Hat Enterprise Linux (RHEL).
• 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, configuration, patching, compliance, reliability, and operational efficiency.
• Implement cybersecurity requirements including RMF, NIST 800-53, STIGs, and ICD 503, including system hardening and monitoring.
• Integrate Linux environments with enterprise identity, virtualization, storage, backup, and monitoring capabilities.
• Troubleshoot complex technical issues and collaborate with cybersecurity, networking, storage, application, HPC, and mission teams.
• Evaluate and introduce new technologies and architectures to advance infrastructure modernization and mission capabilities.
• Support mission-critical operations, planned maintenance, and after-hours requirements.

Skills

Linux engineering

Ansible

Python

Bash

Automation

Security compliance

Troubleshooting

Active Directory

Education

Bachelor's degree in a related technical field

Tools

VMware

KVM

Active Directory

LDAP

Kerberos

PKI

Job description

Oak Ridge National Laboratory seeks an experienced Linux Engineer to design, build, secure, and modernize high-assurance Linux environments supporting classified and scientific missions. You will own mission-critical accounts, automate deployments, and ensure compliance across multiple domains in a fast-paced team.

The role emphasizes advanced Linux engineering, cybersecurity integration, and collaboration with researchers and engineers to deliver resilient, scalable systems that meet stringent