Linux Sys Admin Jobs in Texas (NOW HIRING)

Date Posted:
2026-06-05
Country:
United States of America
Location:
US-TX-RICHARDSON-C17 ~ 1717 Cityline Dr ~ CITYLINE C17
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:
DoD Clearance: Top Secret
Security Clearance Status:
Active and existing security clearance required on day 1
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.
Position Overview:
RTX is seeking a highly skilled and motivated Linux System Administrator with extensive experience in Red Hat Enterprise Linux (RHEL), Automation, and Windows Active Directory integration. The ideal candidate will also possess a strong understanding of Public Key Infrastructure (PKI) and demonstrate the ability to manage secure, mission-critical systems in a fast-paced environment. The role will involve implementing, maintaining, and troubleshooting systems to ensure optimal performance and security in support of RTX's aerospace and defense operations.
What You Will Do:

• Install, configure, and maintain RHEL-based Linux systems and Windows servers to meet operational requirements.
• Develop and implement automation scripts and tools to optimize system administration and operational tasks using a version control repository and a DevSecOps approach.
• Perform system upgrades, apply patches, and resolve technical issues to minimize downtime and maintain platform stability with an Infrastructure as Code (IaC) approach using Continuous Integration / Continuous Delivery (CI/CD).
• Perform system monitoring, tuning, and troubleshooting to ensure high availability and performance.
• Apply security hardening and compliance practices to meet government and industry standards using a GitOps philosophy for operational updates.
• Manage user accounts, permissions, and access control in a secure environment using a GitOps philosophy for operational updates.
• Assist in system backups, recovery, and disaster recovery planning.
• Develop and maintain technical documentation, system configuration, Standard Operating Procedures (SOPs), process and procedural documentation for both end-users and administrators.
• Proven teamwork and collaboration skills, with experience working across multiple sites and cross-functional teams.

Qualifications You Must Have:

• Typically requires a University Degree or equivalent experience and a minimum of 5 years of experience, or an Advanced Degree and a minimum of 3 years of experience.
• Minimum 5 years of experience in Identity and Access Management practices and ITIL methodologies.
• Minimum 5 years' experience with Red Hat Enterprise Linux (RHEL) system administration.
• Minimum 5 years of Certificates and Certificate Management, along with Public Key Infrastructure (PKI).
• Minimum 5 years OS troubleshooting experience with Windows 11, RHEL 9/10, and Windows Server systems for agent issues.
• Minimum 5 years in networking and networking concepts along with basic network troubleshooting tools like ping, tracert, etc.
• Minimum 5 years of Active Directory and Active Directory concepts along with basic AD tools like ADUC, DNS, sites and services, etc.
• Active and transferable U.S. government issued TOP 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.
• Certifications such as Red Hat Certified System Administrator (RHCSA), Red Hat Certified Engineer (RHCE), Security + or equivalent.

Qualifications We Prefer:

• Proficiency with Agile tools such as Atlassian Jira and Confluence to support project management and team collaboration.
• Experience with cloud-based solutions and familiarity with automation tools to streamline processes.
• Experience with cloud environments and hybrid infrastructure.
• Experience with Infrastructure as Code (IaC) using version control (Git, BitBucket, or similar technologies) and orchestration (Jenkins, Ansible Automation Platform, or similar technologies) using a GitOps philosophy.
• Knowledge of virtualization technologies (e.g., VMware, Hyper-V).
• Experience with network protocols and services (e.g., DNS, DHCP, NTP).
• Understanding of compliance frameworks (e.g., NIST, RMF, or DoD STIGs).
• Knowledge of RSA SecurID Software and Portals.
• Knowledge of Centrify (Delinea) implementation, configuration, and management.
• Knowledge of Apache Tomcat, including installation, configuration, performance, and troubleshooting.
• Familiarity with SUSE Linux, specifically in managing and configuring Authentication Manager OS.

Work Location: Onsite, Please consider the following role type definition as you apply for this role:
Onsite: Employees who are working in Onsite roles will work primarily onsite. This includes all production and maintenance employees, as they are essential to the development of our products
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.
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 for this role is 86,800 USD - 165,200 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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