Linux Systems Administrator

Location: US-TX-MCKINNEY-513WC ~ 2501 W University Dr ~ WING C BLDG

 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: Secret

 Security Clearance Status: Active and existing security clearance required on day 1 At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.  Raytheon brings 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. We deliver solutions that help our nation and allies defend freedoms and deter aggression, creating a safer, more secure world. Join us and help shape the future of aerospace and defense. What You Will Do : As a System Administrator, you will play a critical role in managing and maintaining a dynamic and heterogeneous Red Hat Enterprise Linux environment (versions 7, 8, and 9). Your responsibilities will include: Providing system administration in a fast-paced, technologically advanced environment while collaborating effectively within a team.  Utilizing advanced troubleshooting techniques to resolve technical challenges of moderate to high complexity, including hardware and operating system (OS) integrations.  Installing and configuring software applications based on end-user requirements.  Partnering with Cybersecurity professionals to ensure compliance with security requirements and best practices.  Performing monthly system patches and updates to maintain optimal functionality and security.  Identifying and remediating vulnerabilities identified in SCAP scans and STIG findings to ensure system integrity.  Ensuring antivirus definitions are up-to-date and verifying servers are properly reporting to Splunk.  Managing user accounts, permissions, and access controls to maintain system security and compliance.  Overseeing system backups, conducting regular tests to validate data restoration processes, and ensuring effective data retention.

You Must Have: Typically requires a University degree or equivalent experience and a minimum of 2 years of prior relevant experience, or an Advanced Degree in a related field. 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. Experience with Red Hat Enterprise Linux systems.  Ability to obtain the Department of Defense Directive (DoDD) 8140 / 8570 Certification (e.g., CompTIA Security+ CE or equivalent) within six months of the start date.

We Prefer: Experience working in High-Performance Computing (HPC) environments.  Familiarity with Artificial Intelligence (AI) solutions and implementations.  Experience with databases such as MariaDB, Oracle, and SQL.  Experience with Enterprise Active Directory (AD) and LDAP.  Experience with security tools, including SCAP, Nessus, Splunk, Symantec, and other antivirus solutions, as well as system hardening practices.  Background in supporting engineers in software, simulations, and hardware development.  Experience troubleshooting and documenting real-time solutions to technical challenges.  Scripting experience (e.g., Bash, Python, Ansible) and