Senior Linux System Admin (RHEL) – Top-Secret Eligible

Radiance Technologies, Inc.; Beavercreek (OH); On-site; USD 90,000 - 120,000; Full time

Job summary

Radiance Technologies, an employee-owned contractor supporting NASIC, seeks a Linux System Administrator to install, configure and maintain Red Hat Linux systems in a classified environment. The role focuses on reliability, security and compliance for critical IT resources.

The successful candidate will manage PostgreSQL databases, perform backups, test updates, document procedures and implement performance tuning.

Qualifications

• Active TS/SCI clearance with SCI eligibility required.
• Experience installing PostgreSQL and performing backups.
• Experience administering Red Hat Enterprise Linux (RHEL) 9/10 in a classified environment.
• Security+ or higher certification preferred.
• Experience with PKI, Tomcat/Apache, and scripting is advantageous.

Responsibilities

• Install and maintain Linux servers and network systems.
• Provide backup and recovery services; manage file systems and disk space.
• Test updates to enterprise system software to ensure compatibility and minimize user impact.
• Develop and document technical processes and procedures as needed.
• Performance and network tuning; develop best practices and templates.

Skills

TS/SCI eligibility

PostgreSQL backups

RHEL administration

Security operations

Scripting & automation

Network security

Education

B.S. in Computer Science/IT

10+ years experience without degree

Tools

Tomcat

Apache

PKI infrastructure

Job description

Radiance Technologies, an employee-owned contractor supporting NASIC, seeks a Linux System Administrator to install, configure and maintain Red Hat Linux systems in a classified environment. The role focuses on reliability, security and compliance for critical IT resources.

The successful candidate will manage PostgreSQL databases, perform backups, test updates, document procedures and implement performance tuning.