Principal Linux System Administrator (Secret Clearance Required)

Principal Linux System Administrator

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.

The following position is to join our RTX Corporate, Enterprise Services.

What You Will Do:

• Collaborate and partner with a diverse cross-section of Digital Technology, Engineering, and Program Management teammates supporting RTX's programs across the Enterprise-Wide Area Network (eWAN) to support fast-paced, critical programs with classified information system capabilities.
• Provide systems administration, sustainment, and troubleshooting support for Red Hat Enterprise Linux servers and appliances operating within Classified Digital Services environments.
• Install, configure, maintain, patch, secure, and troubleshoot Linux operating systems, applications, middleware, repositories, and supporting infrastructure services.
• Support the deployment, administration, and continued operation of vulnerability management technologies, including Tenable Security Center, Nessus scanners, Nessus Agents, ACAS, or related approved security products.
• Coordinate vulnerability scanning activities, analyze findings, assist with remediation planning, and work with infrastructure and cybersecurity teams to reduce security risk across classified assets.
• Support security hardening and compliance activities using applicable security requirements, including DISA Security Technical Implementation Guides (STIGs), approved configuration baselines, vulnerability remediation guidance, and internal cybersecurity procedures.
• Develop, maintain, and execute Ansible playbooks or comparable automation solutions to support Linux configuration management, system hardening, patching, software deployment, security-tool administration, and compliance validation activities.
• Identify opportunities to automate repetitive system administration, vulnerability remediation, compliance reporting, configuration validation, and operational sustainment tasks.
• Support secure patching and software deployment processes for Linux systems in restricted, isolated, or classified network environments.
• Troubleshoot Linux server, application, networking, authentication, storage, repository, and security-tool integration issues of moderate to high complexity.

Qualifications You Must Have:

• Typically requires a University Degree or equivalent experience and minimum 5 years prior relevant experience, or an Advanced Degree in a related field and minimum 3 years experience.
• An active and transferable U.S. government-issued Secret security clearance is required on day one of employment.
• Must be able to obtain and maintain a Department of Defense Directive 8140 / 8570-compliant baseline certification, such as CompTIA Security+ CE or an approved equivalent, within 6 months of start date unless already held.

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, this position can be in Tucson AZ, Tewksbury MA, or Richardson TX