Linux Systems Administrator

Date Posted:

2025-07-07

Country:

United States of America

Location:

TX190: 2501 West University, McKinney 2501 West University , McKinney, TX, 75070 USA

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:

DoD Clearance: Secret

At Raytheon, the foundation of everything we do is rooted in our values and a higher calling – to help our nation and allies defend freedoms and deter aggression. We bring 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. Our team solves tough, meaningful problems that create a safer, more secure world. 

What You Will Do:

• Administer, patch, and harden Red Hat Enterprise Linux (RHEL) and related distributions. 

• Collaborate with Cyber to maintain and monitor system availability, performance, and logs using enterprise tools. 

• Configure and maintain STIG-compliant systems in accordance with DoD security standards. 

• Automate system tasks using Ansible and Bash shell scripting 

• Troubleshoot hardware and software issues across physical and virtualized environments (VMWare) 

• Work closely with security, network, and development teams to support mission objectives. 

• Support audit readiness activities and respond to security vulnerability findings. 

• Provide mentorship and guidance to junior system administrators.

• Leverage ticketing system to resolve incidents submitted by end users

Qualifications You Must Have:

• Typically requires a University degree or equivalent experience and a minimum of 2 years of prior relevant experience, or an Advanced Degree in a related field.

• Active and transferable U.S. government issued Secret security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.

• Experience with Linux system administration. 

• Strong experience with RHEL 7/8/9, including systemd, firewalld, and SELinux. 

• Working knowledge of enterprise logging, monitoring, and alerting systems. 

• Experience with automation tools such as Ansible. 

• Familiarity with CIS/STIG benchmarks and DoD security standards.

Qualifications We Prefer:

• Experience with Databases including MariaDB, Oracle, and SQL

• Linux OS Certificate ( RHCSA / Linux+ )

• Experience with scanning tools such as Nessus and SCAP

• Experience with Splunk

• Experience with High Performance Computing ( HPC ) Environments

• Familiarity with NetApp / OnTap tools

• Experience with Enterprise Active Directory (AD) & LDAP

• Experience dealing with Managed Anti-Virus (AV) solutions ( ClamAV & SEM ).

• Scripting Experience (Bash, Python, Ansible) and Kickstart

• Experience hardening systems using tools like SCAP and following STIGs.

• Experience supporting engineers in software, simulations, and hardware development.

What We Offer:

Our values drive our actions, behaviors, and performance with a vision for a safer, more connected world. At RTX we value: Trust, Respect, Accountability, Collaboration, and Innovation.

Learn More & Apply Now!

The salary range for this role is 66,000 USD - 130,000 USD. The salary range provided is a good faith estimate representative of all experience levels. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate’s work experience, location, education/training, and key skills.

Hired applicants may be eligible for benefits, including but not limited to, medical, dental, vision, life insurance, short-term disability, long-term disability, 401(k) match, flexible spending accounts, flexible work schedules, employee assistance program, Employee Scholar Program, parental leave, paid time off, and holidays. Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.

Hired applicants may be eligible for annual short-term and/or long-term incentive compensation programs depending on the level of the position and whether or not it is covered by a collective-bargaining agreement. Payments under these annual programs are not guaranteed and are dependent upon a variety of factors including, but not limited to, individual performance, business unit performance, and/or the company’s performance.

This role is a U.S.-based role. If the successful candidate resides in a U.S. territory, the appropriate pay structure and benefits will apply.

RTX anticipates the application window closing approximately 40 days from the date the notice was posted. However, factors such as candidate flow and business necessity may require RTX to shorten or extend the application window.

RTX is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability or veteran status, or any other applicable state or federal protected class. RTX provides affirmative action in employment for qualified Individuals with a Disability and Protected Veterans in compliance with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act.

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