Senior Linux Systems Administrator - TS/SCI Poly Required

RTX; Aurora (CO); On-site; USD 87,000 - 165,000; Full time

Benefits offered by this job

Medical, dental, vision

401(k) match

Paid time off & holidays

Job summary

RTX is seeking a Principal Linux System Administrator (onsite) in Aurora, CO to support critical mission systems. You will monitor system health, maintain security posture, and work with developers and engineers to diagnose and fix issues on classified platforms.

This role requires TS/SCI clearance, DoD 8570 IAT Level 2 certification, and 5+ years in Linux administration. The position is 100% onsite with an 8x5 schedule and after-hours call-in, offering a strong benefits package and a

Qualifications

• Bachelor’s degree and minimum 5 years of relevant experience or Master’s degree with minimum 3 years.
• Active TS/SCI clearance with transferability required prior to start date.
• DoD 8570 IAT Level 2 certification (or ability to acquire within 30 days).
• Experience with Linux system administration.
• Experience configuring domain utilities such as AD, Centrify and LDAP.

Responsibilities

• Monitor and maintain health and security posture of mission systems.
• Collaborate with program developers and system engineers to resolve issues.
• Document problems in logs and discrepancy reporting tools.
• Collect environmental data at failure and support DR investigations.
• Perform system monitoring, trend analyses, and support Tier 3 activities.
• Work onsite 100% and engage with customers in day-to-day operations.
• Maintain after-hours call-in responsibility in an 8x5 schedule.

Skills

Linux Systems Administration

Active Directory

Centrify

LDAP

Security clearance TS/SCI

Education

Bachelor's degree

Master's degree

Tools

Active Directory

Centrify

LDAP

Job description

RTX is seeking a Principal Linux System Administrator (onsite) in Aurora, CO to support critical mission systems. You will monitor system health, maintain security posture, and work with developers and engineers to diagnose and fix issues on classified platforms.

This role requires TS/SCI clearance, DoD 8570 IAT Level 2 certification, and 5+ years in Linux administration. The position is 100% onsite with an 8x5 schedule and after-hours call-in, offering a strong benefits package and a