Principal Linux Administrator

Position Details

Date Posted: 2025-12-11

Country: United States of America

Location: TX233: Richardson, 1737 East City Line Drive, Building C37, Richardson, TX 75082 USA

Role Type: Onsite

Work Location: Onsite

• Mc Kinney, TX or Tucson, AZ - Relocation assistance can be offered for qualified candidates

Salary Range: $82,000 USD - $164,000 USD

Requirements

U.S.

Citizenship and Security Clearance:

• U.S. Citizen, U.S. Person, or specific Immigration Status required
• 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
• Active Top Secret clearance required

DoD Clearance: Top Secret

About RTX Corporation

RTX Corporation is an Aerospace and Defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses – Collins Aerospace, Pratt & Whitney, and Raytheon. Its 195,000 employees enable the company to operate at the edge of known science as they imagine and deliver solutions that push the boundaries in quantum physics, electric propulsion, directed energy, hypersonics, avionics and cybersecurity. The company, formed in 2020 through the combination of Raytheon Company and the United Technologies Corporation aerospace businesses, is headquartered in Arlington, Virginia.

Role Overview

RTX is seeking a Principal Linux Administrator to support a highly virtualized Enterprise infrastructure with a focus on Linux-based systems. The role involves working under the supervision of technical team leaders in collaboration with team members across multiple sites. This role is ideal for candidates with specialized expertise in Linux system administration, a commitment to collaboration, and the ability to work in a high-security environment.

What You Will Do

• Install and manage Linux server hardware, operating systems, and software
• Perform software upgrades, patching, and system maintenance on Linux systems
• Troubleshoot issues and apply security policies specific to Linux environments
• Conduct information assurance testing and vulnerability mitigation for Linux systems
• Maintain data storage and monitor server operations
• Manage backup systems and provide Tier 2 support to the IT Service Desk
• Document processes and ensure compliance with organizational policies
• Provide remote support for systems across multiple locations

Required Qualifications

• Typically requires a University Degree or equivalent experience and a minimum 5 years of experience, or an Advanced Degree and a minimum 3 years experience
• Experience supporting Linux operating systems in enterprise environments
• Experience managing VMWare virtual environments
• Active Top Secret clearance
• Existing DoD 8570 security certification (e.g., Security X, Security+, CISSP), or the ability to obtain one within 6 months of starting

Preferred Qualifications

• Familiarity with Agile tools such as Atlassian Jira and Confluence
• Knowledge of security policies related to IT systems in secure environments, with a focus on Linux
• Proficient in performing system maintenance, installations, upgrades, and backups on Linux systems
• Team-oriented with strong collaboration skills across multiple sites
• Ability to learn and follow documented policies and standards
• Excellent customer service, communication, and process documentation skills

What We Offer

Whether you're just starting out on your career journey or are an experienced professional, RTX offers a robust total rewards package including:

• Compensation and healthcare, wellness, retirement and work/life benefits
• Career development and recognition programs
• Parental (including paternal) leave
• Flexible work schedules
• Achievement awards
• Educational assistance
• Child/adult backup care
• Medical, dental, vision, life insurance
• Short-term disability and long-term disability
• 401(k) match
• Flexible spending accounts
• Employee assistance program
• Employee Scholar Program
• Paid time off and holidays
• Potential eligibility for annual short-term and/or long-term incentive compensation programs (not guaranteed, dependent on performance and other factors)

Additional Information

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

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.

Specific benefits are dependent upon the specific business unit as well as whether or not the position is covered by a collective-bargaining agreement.

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.

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.

Equal Opportunity Statement

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.