Entry Level Linux System Administrator Jobs in California

Date Posted:

2026-07-28

Country:

United States of America

Location:

US-CA-GOLETA-H03 ~ 6380 Hollister Ave ~ BLDG H03

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.

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. 

Raytheon currently has an exciting systems administrator position available that supports the Raytheon mission of making the world a safer place. We are seeking an experienced Windows System Administrator that will be working in a highly collaborative, multi-platform and multi–disciplined environment. The System Administrator must possess a secret security clearance as they will be responsible for administering systems that contain classified data.

The candidate is responsible for provisioning, installation/configuration, operation, and maintenance of systems hardware and software related to a Linux infrastructure for classified programs. Duties include, 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.

What You Will Do:

• Provide IT systems administration in a heterogeneous Microsoft Windows and RedHat Enterprise Linux environment. 

• Experience with Windows Server internals or Linux fundamentals to include DNS, DHCP, AD, and server replication methods.  

• Working as a team member in a fast-paced technological environment.  Use troubleshooting techniques to resolve technical problems of a moderate to high scope and complexity to include the integration of hardware and operating systems (OS). 

• Understanding of data RAID, data backup uses and technologies. Install and configure software applications requested by end users. 

• Work with Cybersecurity professionals to maintain security requirements.  

• Must be able to obtain Department of Defense Directive (DoDD) 8140 / 8570 Certification requirements (CompTIA Security+ CE or equivalent certification) within 6 months of start date. 

• Systems are operational 24x7 and occasionally require work effort beyond standard work hours. 

• Travel required as business needs dictate to other US Domestic locations, up to 10% per year. 

• Full time 100% Onsite position. 

What You Will Learn

• Experience Deploying Windows workstations and migrating end-user data.

• Experience with cloning techniques.

• Experience with operating system concepts and implementations

• Microsoft Windows Active Directory Services administration and support (e.g. user and computer objects administration, Group Policy).

• Experience with network services as related to Microsoft Windows environment (e.g. DC, DNS, DHCP, etc.).

• Experience with supporting desktop / workstation hardware.

• Experience with an IT incident/service request system.

Qualifications 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.

• Windows and/or Linux systems administration experience.

Qualifications We Prefer:

• Active Top Secret security clearance.

• Bitlocker support.

• Windows command line and related utilities.

• Network and infrastructure services such as domain controllers, global catalogs, DNS, and DHCP.

• Infrastructure backup, restore, disaster recovery and business continuity.

• Cloud computing (AWS, Azure).

• Experience with the following Microsoft technologies: MDT/WSUS/MECM; Windows desktops (Windows 10 & 11), Horizon.

• Support experience with engineering applications such as MatLab, Green Hills products, Doors, and Subversion.

• CompTIA Security+ certification or other industry-recognized certifications relevant to a Windows System Administrator.

• Infrastructure backup, res.tore, disaster recovery and business continuity.

• Network and infrastructure services such as domain controllers, global catalogs, DNS, and DHCP.

• ITIL Foundations and/or ITIL Service Operations.

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.

Learn More & Apply Now!

ed by local laws/regulations.

As part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote.

The salary range for this role is 75,800 USD - 144,200 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.

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