Date Posted:2025-08-22Country:United States of AmericaLocation:CO112: Buckley AFB 18500 East 6th Ave 18500 East 6th Avenue Buckley AFB, Aurora, CO, 80011 USAPosition Role Type:RemoteU.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: TS/SCI with CI Poly - CurrentAt 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.Raytheon has an opportunity for a Principal System Administrator for Linux operational support and sustainment for high priority operational environment which supports a critical U.S. Government mission.  This position will support an evolving system with opportunities for the candidate to provide technical input and direction for the architectural changes necessary to support growing requirements of the system.This candidate is expected to be self-directed, able to multi-task and prioritize work, possess problem solving skills, have written and verbal communication skills, is customer focused, and organized. The candidate will follow Raytheon engineering process as well as other government mandated processes during the life cycle of systems they will maintain.What You Will Do: <ul><li>Perform software application maintenance and OS maintenance on many network of physical and virtual servers</li><li>Perform routine and preventative maintenance such as general computer tasks, application loads, storage management, system loading and system monitoring</li><li>Detect, isolate, document, quickly report, and resolve system outages or problems utilizing program processes and procedures. These activities include collecting diagnostic data, restoring the system operation, developing workarounds, and other activities necessary for recovery of a system</li><li>Document problems in logging and discrepancies reporting tools per customer requirements.</li><li>Perform system monitoring, analyzing and documenting performance and conducting trend analysis as needed</li><li>Apply security hardening settings and work with our Information Assurance partners to maintain compliance with standards</li></ul><ul><li>Administer backups and diagnose backup errors</li><li>Documentation including discrepancy reports, system configuration, test documentation, and user guides</li><li>Demonstrated experience creating, implementing, and maintaining scripts for process automation, infrastructure monitoring, and proactive reporting</li><li>Demonstrated experience in all aspects of managing a Unix/Linux environment</li><li>Must be able to provide occasional off-hour call in support</li></ul>This position is 100% onsite role.Qualifications You Must Have:<ul><li>Typically requires a bachelor’s degree and a minimum of 5 years of prior relevant experience or a master’s degree and minimum of 3 years of prior relevant experience.</li><li>Must have active and transferable U.S. government issued TS/SCI with poly security clearance is required prior to start date. with the ability to obtain program access. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance.</li></ul><ul><li>Must have a Red Hat Linux experience </li><li>Must have system maintenance experience such as user administration, system network management, patching, name resolution, authentication, daemon, init, and cron management</li><li>Must have experience with backup and restore</li><li>Experience with system deployment and configuration management</li><li>Experience with system security controls implementation and Vulnerability Assessment</li><li>Experience with compliance and implementation of Information Security and Assurance</li><li>Troubleshoot using built-in operating system functionality and system logs</li><li>Experience with creating, implementing, and maintaining scripts for process automation, infrastructure monitoring, and proactive reporting</li></ul>Qualifications We Prefer<ul><li>Ability to work in a structured configuration-controlled environment, primarily focused on the support and maintenance of real-time systems on an Operations and Maintenance (O&amp;M) contract</li><li>Strong analytical skills and ability to evaluate platform level problems and provide solutions for immediate restoration of service</li><li>Experience working in a 24x7 operational systems</li></ul>Relocation eligibly!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. Relocation assistance is available.Learn More &amp; Apply Now!The salary range for this role is 82,000 USD - 164,000 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. Privacy Policy and Terms:Click on this <a target="_blank" href="http://www.rtx.com/privacy/Job-Applicant-Privacy-Notice">link</a> to read the Policy and Terms