RTX
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Principal Linux Administrator (Top Secret Clearance Required)
role at
RTX .
Date posted: 2025-12-11
Country: United States of America
Location: TX233: Richardson 1737 CityLine 1737 East CityLine Drive Building C37, Richardson, TX, 75082 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: Top Secret
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 Systems, Pratt & Whitney, and Raytheon. Its 185,000 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, VA.
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. This role is onsite in either McKinney, TX or Tucson, AZ. It requires an active Top Secret clearance in order to be considered.
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.
Qualifications You Must Have
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.
Clearance: Active Top Secret.
Certification: Existing DoD 8570 security certification (e.g., Security X, Security+, CISSP), or the ability to obtain one within 6 months of starting.
Qualifications We Prefer
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, we offer a robust total rewards package with compensation; healthcare, wellness, retirement and work/life benefits; career development and recognition programs. Some of the benefits we offer include parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance and child/adult backup care.
Work Location Onsite - McKinney, TX or Tucson, AZ - Relocation assistance can be offered for qualified candidates.
Salary Range 82,000 USD – 164,000 USD.
Benefits 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 on the business unit and collective‑bargaining agreements.
EEO 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.
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Principal Linux Administrator (Top Secret Clearance Required)
role at
RTX .
Date posted: 2025-12-11
Country: United States of America
Location: TX233: Richardson 1737 CityLine 1737 East CityLine Drive Building C37, Richardson, TX, 75082 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: Top Secret
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 Systems, Pratt & Whitney, and Raytheon. Its 185,000 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, VA.
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. This role is onsite in either McKinney, TX or Tucson, AZ. It requires an active Top Secret clearance in order to be considered.
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.
Qualifications You Must Have
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.
Clearance: Active Top Secret.
Certification: Existing DoD 8570 security certification (e.g., Security X, Security+, CISSP), or the ability to obtain one within 6 months of starting.
Qualifications We Prefer
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, we offer a robust total rewards package with compensation; healthcare, wellness, retirement and work/life benefits; career development and recognition programs. Some of the benefits we offer include parental (including paternal) leave, flexible work schedules, achievement awards, educational assistance and child/adult backup care.
Work Location Onsite - McKinney, TX or Tucson, AZ - Relocation assistance can be offered for qualified candidates.
Salary Range 82,000 USD – 164,000 USD.
Benefits 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 on the business unit and collective‑bargaining agreements.
EEO 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.
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