Principal Linux Administrator; Secret Clearance 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

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.

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 position is ideal for candidates with specialized expertise in Linux system administration, proficiency in automation tools such as Ansible, and a strong commitment to fostering collaboration in dynamic, high-security environments. The successful candidate will demonstrate an ability to implement automation solutions, optimize system performance, and ensure the reliability and security of Linux systems in a mission-critical setting.

This role is onsite for Tucson, AZ, Dallas, TX, or El Segundo, CA. It requires an active Secret clearance in order to be considered.

Provide support for on-premises cloud environments, including both Linux and Windows operating systems, with a focus on automation and system optimization.

Manage and maintain on-premises Infrastructure-as-a-Service (IaaS) and Platform-as-a-Service (PaaS) environments.

Develop, deploy, and maintain automation scripts and tools to streamline system administration tasks, including provisioning, configuration management, and monitoring.

Deliver CDS services within the assigned technology domain across various security levels and IT environments as required.

Provide timely and effective customer support for service requests, incident resolution, and operational troubleshooting.

Support the deployment, transition, and release activities for newly developed on-premises cloud services and CDS solutions.

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 managing VMWare virtual environments.

Certification:
Existing DoD 8570 security certification (e.g., Security X, Security+, CISSP), or the ability to obtain one within 6 months of starting.

Active and transferable U.S. government issued 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.

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.

Strong understanding of on-premises cloud environments, including Linux operating systems.

Proficiency in automation tools and frameworks such as Ansible, Terraform, Power Shell, or Python.

Experience with managing and maintaining Infrastructure-as-a-Service (IaaS) and Platform-as-a-Service (PaaS) environments.

Ability to troubleshoot and resolve…