Principal Linux Systems Administrator- Must have active TS/SCI Poly clearance

RTX (Raytheon); Aurora (CO); Vor Ort; USD 120.000 - 160.000; Vollzeit

Zusammenfassung

RTX Raytheon seeks a Principal Linux System Administrator in Aurora, CO. The role supports mission-critical, classified systems, requiring active TS/SCI with Poly.

You will monitor, troubleshoot, and maintain Linux-based environments, collaborating with developers and engineers to resolve issues and strengthen security. Onsite presence is required, with responsibilities across system health, logging, and DR readiness.

Qualifikationen

• Bachelor's degree or higher with relevant experience in Linux administration.
• Active TS/SCI Poly clearance required prior to start date.
• IAT Level 2 certification (Security+ CE, CCNA Security, GICSP, GSEC, SSCP, CySA+, CND) or higher.
• Experience configuring domain information utilities (Active Directory, Centrify, LDAP).

Aufgaben

• Monitor and maintain system health and security posture for classified capabilities.
• Collaborate with program developers and system engineers to research issues and implement solutions.
• Document problems in logging and discrepancy reporting tools.
• Collect environment data during failures and assist DR investigations.
• Perform system monitoring, analysis, and trend reporting; support system engineering groups.

Kenntnisse

Linux admin

Active Directory

LDAP

VMware

AWS

Citrix

Perl

Python

Shell scripting

Storage arrays

Ausbildung

Bachelor's degree

Master's degree

Tools

DoD 8570 IAT Level 2

Jobbeschreibung

Date Posted: 2026-10-21

Country: United States of America

Location: US-CO-AURORA-S75 ~ 16800 E Centretech Pkwy ~ BLDG S75

Position Role Type: Onsite

U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance

Security Clearance Type: TS/SCI with Poly - Current

Security Clearance Status: Active and existing security clearance required on day 1

Raytheon brings the strength of more than 100 years of experience and renowned engineering expertise to meet the needs of today's mission and stay ahead of tomorrow's threat. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense.

At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world's most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.

Our Digital Technology (DT) organization ensures that Raytheon teammates across the globe can communicate, collaborate and innovate for customer success. We create leading-edge technology solutions to prevent security threats, secure the integrity of our systems and support IT infrastructures around the world.

Principal Linux System Administrator

Principal Linux System Administrator based in Aurora CO , collaborates with many teams to support exciting, critical programs with classified information system capabilities. Success in this role means you will be responsible for monitoring and maintaining system health and security posture, directly supporting customer mission-critical capabilities. You will work closely with program developers and system engineers to research issues, determine root causes and implement solutions to system problems. This position is an 8x5 position with after-hours call-in responsibility. This position is 100% onsite in Stennis, MS.

• Performs software application maintenance on mission systems running a variety of operating systems with Linux
• Performs routine and preventative maintenance such as general computer tasks, application loads, disk utilization, system loading and system monitoring
• Detects, isolates, documents, quick reports, and resolve system outages, or problems encountered during operations of the operational system baseline, which includes the collections of diagnostic data, restoring the system operation, development of workarounds, and other activities necessary for recovery of a system
• Accurately document problems in logging and discrepancy reporting tools
• Collect data describing the environment at the time of the failure and perform other activities in support of Tier 3 maintenance provider DR investigation and resolution
• Perform system monitoring, analyzing and document performance and conduct trend analyses as required
• Also support system engineering groups as required for ongoing analysis and integration efforts
• Environment fluctuates between routine and urgent, depending on ongoing tasks, priorities, and performance of assigned systems
• Works directly with the customer in most aspects of the day-to-day
• 100% on site

Q ualifications You Must Have:

• Typically requires a bachelor's degree and minimum of 5 years of prior relevant experience or a master's degree and minimum of 3 years of prior relevant experience
• Must have an active and transferable U.S. government issued TS/SCI Poly clearance prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.
• Must have an active DoD 8570 IAT Level 2 certification (or higher) or acquire one within 30 days of start date. IAT Level 2 requires one or more of the following Professional Certifications: Security+ CE, CCNA Security, GICSP, GSEC, SSCP, CySA+, CND.
• Experience with Linux Systems Administration
• Experience configuring domain information utilities, such as Active Directory, Centrify, LDAP

Qualifications We Prefer:

• Experience presenting technical information to customers, clients and/or internal audiences
• The ability to work effectively with frequent and direct customer interaction in a real-time operational environment
• The ability to work under pressure in restoring high-priority systems back to operations
• Ability to navigate, debug, and modify programs in an advanced programming language
• Ability to write PERL, python, and shell scripts
• Experience with storage products from Oracle/Sun/STK, EMC, IBM, NetApp, and/or DDN
• Experience with virtual / cloud computing technologies using Citrix, VMware, and Amazon Web Services (AWS)
• Working knowledge of thin-client