Linux / Unix Systems Administrator Jobs in California

21 - 40 of 682 Jobs

Cloud Systems Administrator - Direct- Hire/FTE - Elk Grove, CA.?Job Title - Cloud Systems Administrator - Direct- Hire/FTE - Elk Grove, CA.?

INSPYR SolutionsCompany Name - INSPYR Solutions

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Elk Grove, California, USA

Full-time

Cloud Systems Administrator - Direct-Hire/FTE - Elk Grove, CA. Title: Cloud Systems Administrator Location: Elk Grove, CA - Hybrid with 3 days onsite per week Duration: Direct Hire/FTE Compensation: $140,000 - $150,000 base +15% Bonus Work Requirements: , Holders or Authorized to Work in the US Position Summary: The Lead Systems Administrator will serve as a subject matter expert (SME) responsible for the ongoing operations of all infrastructure components of a hosted datacenter, as well as the

Systems AdministratorJob Title - Systems Administrator

Apex SystemsCompany Name - Apex Systems

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El Segundo, California, USA

Full-time

Job#: 2037008 Job Description: Apex Systems is seeking a Systems Administrator to design, install, operate, secure and maintain dedicated Program Information Technology Infrastructure. The environment consists of multiple sites and networks with servers and High Performance Computing Clusters running Red Hat Linux in multiple locations around the U.S. and growing. Future expansion will include WNDRVR VxWorks embedded Linux operation systems. Linux and Windows servers host engineering application

Linux System AdministratorJob Title - Linux System Administrator

LeidosCompany Name - Leidos

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San Diego, California, USA

Full-time

The Maritime Solution Systems Portfolio within the Maritime Systems Division (MSD) is seeking an experienced, dynamic, and highly capable Linux system administrator to join the Leidos team at a customer site in San Diego, CA. The business activities within this portfolio include underwater vehicle systems, maritime sensors, supporting information technology and engineering services for complex maritime applications, and the development and support of underwater data acquisition and telemetry sys

Principal Linux AdministratorJob Title - Principal Linux Administrator

RaytheonCompany Name - Raytheon

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El Segundo, California, USA

Full-time

Date Posted: 2025-06-23 Country: United States of America Location: CA222: 2006 E El Segundo Blvd BldgE04 2006 East El Segundo Boulevard Building E04, El Segundo, CA, 90245 USA 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.Security Clearance: DoD Clearance: Top Secret At Raytheon, the foundation of everything we do is rooted in our values and a hi

Quality Assurance EngineerJob Title - Quality Assurance Engineer

Horizontal TalentCompany Name - Horizontal Talent

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San Francisco, California, USA

Contract

Join our team as a Quality Assurance Engineer, where you will play a vital role in ensuring our websites perform flawlessly. We are looking for a detail-oriented professional who excels in communication and collaboration. Responsibilities Collaborate with developers and product managers to maintain the seamless operation of our production environment. Identify and document use cases, create comprehensive test cases, and execute tests to ensure quality standards are met. Analyze test results and

Senior Linux System AdministratorJob Title - Senior Linux System Administrator

General DynamicsCompany Name - General Dynamics

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Livermore, California, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Linux, Microsoft Server Operating Systems, Microsoft Windows Environment Certifications: None Experience: 8 + years of related experience ship Required: Yes Job Description: $10K Sign-on bonus A Senior Linux System Administrator Maintains an o

Systems AdministratorJob Title - Systems Administrator

General DynamicsCompany Name - General Dynamics

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San Jose, California, USA

Full-time

Basic Qualifications Bachelor's degree in a specialized area; or equivalent is required plus a minimum of 8 years of relevant experience; or Master's degree plus a minimum of 6 years of relevant experience. CLEARANCE REQUIREMENTS: Department of Defense TS/SCI security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work perform

Senior Systems AdministratorJob Title - Senior Systems Administrator

Diligente TechnologiesCompany Name - Diligente Technologies

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Milpitas, California, USA

Contract

Job Title: Senior Systems AdministratorLocation: Milpitas, CA (100% Onsite)Duration: 6-Month Contract Job Summary:We are seeking a skilled Senior Systems Administrator to support and maintain Windows servers, virtualization platforms, and storage systems for Engineering and Corporate IT environments.The ideal candidate will provide L3/L4 support, manage system infrastructure in Engineering Labs, and perform hardware/software troubleshooting and recovery. This role demands strong expertise in Win

Systems AdministratorJob Title - Systems Administrator

Zachary Piper Solutions, LLCCompany Name - Zachary Piper Solutions, LLC

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Remote

Full-time

Piper Companies is seeking a Systems Administrator for an established healthcare organization. This is a 6-month contract and is REMOTE (based in US, must work EST). Responsibilities of the Systems Administrator: Support the remediation of Windows Server 2012 environments, including upgrade planning and execution to Azure. Maintain and administer enterprise-level Windows and Linux systems in a hybrid on-prem/cloud environment. Collaborate with vendors to manage third-party applications and navi

Systems AdministratorJob Title - Systems Administrator

Zachary Piper Solutions, LLCCompany Name - Zachary Piper Solutions, LLC

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Remote

Full-time

Piper Companies is seeking a Systems Administrator for an established healthcare organization. This is a 6-month contract and is REMOTE (based in US, must work EST). Responsibilities Support the remediation of Windows Server 2012 environments, including upgrade planning and execution to Azure. Maintain and administer enterprise-level Windows and Linux systems in a hybrid on-prem/cloud environment. Collaborate with vendors to manage third-party applications and navigate upgrade or decommission sc

Software Development EngineerJob Title - Software Development Engineer

Horizontal TalentCompany Name - Horizontal Talent

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San Francisco, California, USA

Contract

Join our dynamic team as a Software Development Engineer and make a direct impact on our customers by supporting and developing innovative software solutions. This role offers the opportunity to enhance your coding skills and gain exposure to a wide array of software applications. Responsibilities Develop and implement monitoring solutions to ensure seamless application performance. Troubleshoot and debug production software issues, providing timely resolutions. Collaborate with development team

Systems Administrator IVJob Title - Systems Administrator IV

General AtomicsCompany Name - General Atomics

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San Diego, California, USA

Full-time

Job Summary General Atomics (GA), and its affiliated companies, is one of the world's leading resources for high-technology systems development ranging from the nuclear fuel cycle to remotely piloted aircraft, airborne sensors, and advanced electric, electronic, wireless and laser technologies. General Atomics is seeking to hire a Systems Administrator to join our team. This position will be responsible for administration, configuration, installation, provisioning, and monitoring of Linux syst

Systems AdministratorJob Title - Systems Administrator

SAICCompany Name - SAIC

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Port Hueneme, California, USA

Full-time

Job ID: 2506915 Location: PORT HUENEME CBC BASE, CA, US Date Posted: 2025-07-01 Category: Information Technology Subcategory: Sys Administrator Schedule: Full-time Shift: Day Job Travel: Yes, 10 % of the Time Minimum Clearance Required: Interim Secret Clearance Level Must Be Able to Obtain: Secret Potential for Remote Work: No Description SAIC is seeking a Systems Administrator for the Joint Expeditionary Command and Control (JEXC2) program based out of Port Hueneme, CA. The qualified

Hybrid Systems Engineer, Sr (Windows / Linux) / Onsite: COJob Title - Hybrid Systems Engineer, Sr (Windows / Linux) / Onsite: CO

Lockheed Martin CorporationCompany Name - Lockheed Martin Corporation

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Remote or Littleton, Colorado, USA

Full-time

Job Description Our employees are the core of everything we do, and they are helping the future arrive. As a leading technology innovation company, our team of over 100,000 employees work with our partners around the world to bring the latest technology to our customers' toughest challenges. Headquartered in Bethesda, MD, Lockheed Martin has employees based in all 50 states and more than 570 facilities that span 70 countries. This Enterprise Operations (EO) position supports the Lockheed Marti

Senior Red Hat Systems AdministratorJob Title - Senior Red Hat Systems Administrator

Harris CorporationCompany Name - Harris Corporation

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Anaheim, California, USA

Full-time

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris Technologie

Infrastructure and Systems Administrator 2Job Title - Infrastructure and Systems Administrator 2

Boeing CompanyCompany Name - Boeing Company

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El Segundo, California, USA

Full-time

This posting is for a contract assignment and is not a full-time employment offer with Boeing. Candidates selected for roles will be employed as contract workers through a Boeing approved 3rd party for the duration of the specified project. Job Description Summary: Assists in demonstrating the effectiveness of test methods. Develops simple test procedures, and instrumentation and configuration definition needed to perform the test and minimize risk. Designs component and sub-assembly level hard

Senior Linux System AdministratorJob Title - Senior Linux System Administrator

General Dynamics Information TechnologyCompany Name - General Dynamics Information Technology

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Livermore, California, USA

Full-time

Systems Administrator IIJob Title - Systems Administrator II

Sierra Nevada CorporationCompany Name - Sierra Nevada Corporation

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Remote or Southern Pines, North Carolina, USA

Full-time

Do you have an eye for detail and a passion for developing innovation solutions? Join our team! As a Systems Administrator II, you will be using your skills and expertise to assist in the analysis, development, and configuration of our existing software and systems that address business requirements and processes. You'll be responsible for evaluating the interface between hardware and software, operational requirements, and characteristics of our systems, establishing and documenting system para

Systems Administrator II (Active Secret Clearance Required) (Temporary)Job Title - Systems Administrator II (Active Secret Clearance Required) (Temporary)

Akima, LLCCompany Name - Akima, LLC

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California, USA

Full-time

Five Rivers Analytics, an Akima company, is hiring a System Administrator (Temporary) to support the Satellite Control Network Operations, Remote Site and Mission Partner Support (STORMS) contract at Vandenberg Tracking Station, Vandenberg Space Force Base California. The System Administrator executes actions necessary to maintain all information systems located on site, and conduct maintenance required to sustain the operability of communications-electronics equipment located at the Remote Trac

IT Systems Administrator, LaunchJob Title - IT Systems Administrator, Launch

SpaceXCompany Name - SpaceX

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Hawthorne, California, USA

Full-time

SpaceX was founded under the belief that a future where humanity is out exploring the stars is fundamentally more exciting than one where we are not. Today SpaceX is actively developing the technologies to make this possible, with the ultimate goal of enabling human life on Mars. IT SYSTEMS ADMINISTRATOR, LAUNCH SpaceX is looking for a highly skilled and knowledgeable IT Systems Administrator to support the networking, compute administration, and application support needs of our launch environ