Linux System Admin

Date Posted:

2026-07-01

Country:

United States of America

Location:

US-CA-EL SEGUNDO-R01 ~ 2000 E Imperial Hwy ~ BLDG R01

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

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.

At 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. Senior System Administrator, internally known as Senior Analyst, Information Workplace Services, collaborates with a diverse team to support exciting, critical programs with classified information system capabilities. Success in this role means you can develop, implement, and maintain secure, cost-efficient environments across various classified programs. Program teams rely on your collaboration and guidance to define computing requirements and create end-to-end solutions to solve complex IT infrastructure problems. The candidate is responsible for provisioning, installation/configuration, operation, and maintenance of systems hardware and software related to a Linux infrastructure for classified programs. In addition, this candidate will support numerous lab environments on workstations that interact or control STE (Special Test Equipment).  Candidate must be experienced with, but are not limited to, server management (software and hardware); storage management (logical and physical); cross platform authentication and access management; data backup and restoration; software and license configuration; and workstation support. 

This position is 100% onsite location in El Segundo, CA.

What You Will Do:

• Experience with Linux architecture, deployment, administration, networking, performance monitoring/tuning, security hardening, and troubleshooting

• Integrated AD authentication  (Kerberos, LDAP and/or Centrify).

• Experience with SMTP, DHCP, DNS, NIS, LDAP, CIFS, NFS, Samba and *NIX system security.

• Experience with infrastructure backup, restore, disaster recovery and business continuity products like Symantec NetBackup.

• Experience with security infrastructure products and capabilities (e.g. Antivirus).

• Experience gathering requirements, designing, and implementing appropriate solutions.

• Experience with application installation and multi-server environment/deployment Experience with an IT incident/service request system.

• Experience with HP server hardware support and diagnosis.

• Experience with HP storage hardware support and diagnosis.

Qualifications You Must Have:

• Typically requires a University degree or equivalent experience and a minimum of 5 years of prior relevant experience or an Advanced Degree in a related field and minimum 3 years experience.

• 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.

• Experience supporting Linux operating systems.

• Experience with Active Directory, VMware, Administration, backup and recovery.

• Must be able to obtain De