{"schemaVersion":"jobsearcher.job.v1","id":"2be5c2d677db51914aefb48d","url":"https://jobsearcher.com/jobs/2be5c2d677db51914aefb48d","canonicalUrl":"https://jobsearcher.com/jobs/2be5c2d677db51914aefb48d","title":"Linux Systems Administrator","description":"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.\n\nWe are seeking a Linux Systems Administrator in San Diego, CA, for a full-time, on-site role that directly supports the mission-critical data infrastructure associated with the DIII-D National Fusion Facility, the world's largest magnetic fusion research tokamak managed by General Atomics.\n\nThis position requires you to deploy, manage, and maintain High-Performance Computing (HPC) systems and high-throughput storage infrastructure that handle massive volumes of experimental data collected from the DIII-D Tokamak fusion reactor.\n\nDaily responsibilities involve ensuring optimal system performance tuned for high ingestion rates and analysis workloads, quickly troubleshooting complex technical issues, administering large-scale data storage systems, and providing expert technical support to fusion scientists, engineers, and researchers, all while collaborating with cross-functional teams to enhance the reliability and scalability of the IT infrastructure critical for advancing fusion energy science.\n\nApplicants must be authorized to work for ANY employer in the U.S. We are unable to sponsor or take over sponsorship of an employment Visa.\n\nWith consultative direction and within an assigned functional unit, this position is responsible for applying advanced computational and data science principles to develop and maintain the smooth operation of multi-user computer systems in support of fusion energy research activities.\n\nDUTIES AND RESPONSIBILITIES:\nDevelops and monitors the assigned organization's policies and standards for the use of office automation equipment and computing resources.\nEnsures organization policies and standards are integrated with company policies and standards.\nDuties include user account administration, maintaining documentation, system hardware and software installation, allocation of mass storage space, effectively securing computing resources, and backing up systems to provide data integrity.\nFunctions in a consulting and technical leadership role with management on short and long-term planning to ensure the strategic and operational effectiveness of information systems service delivery is maintained, including a strategy for national HPC centers and cloud resources.\nCoordinates the assigned organization's electronic office systems activities, which may include: personal computers; server systems and associated software; and standard software products.\nAnalyzes new hardware and software, makes purchase recommendations, and plans and oversees the installation.\nAs a technical expert, responds to inquiries, identifies issues, and guides the development of innovative solutions to unusually complex and unique challenges. This involves close collaboration with domain scientists to develop and implement computational workflows and scientific software.\nMakes internal and external presentations and represents the company as the primary spokesperson on external project(s).\nMay act as a lead and participate in the selection, development, and supervision of information technology professional and support staff, and train internal users.\nPlans and manages day-to-day operation and maintenance of computer systems, including Windows,\nLinux and Unix operating systems and applications.\nCollaborates with research scientists and engineers to develop, implement, and optimize computational and data analysis software, tools, and workflows; assists in porting, benchmarking, and deploying complex scientific models.\nDetermines comprehensive solution(s) for unusually complex and unique system problems.\nTroubleshoots and evaluates hardware and software.\nRepresents the organization as a primary technical contact with suppliers and vendors.\nFunctions in a consulting and leadership role with management in information system planning.\nManages the implementation of system changes or upgrades including deployment, resource requirements, testing, documentation, integration, and compliance and safety.\nDevelops plans for future installation and implementation of applicable hardware and software based on new technology.\nActs as a lead giving guidance and direction to professional staff and may participate in the planning, selection, retention, and development of staff.\nMaintains the strict confidentiality of sensitive information.\nResponsible for observing all laws, regulations and other applicable obligations wherever and whenever business is conducted on behalf of the Company. Expected to work in a safe manner in accordance with established operating procedures and practices.\nOther duties as assigned or as required.\nWe recognize and appreciate the value and contributions of individuals with diverse backgrounds and experiences and welcome all qualified individuals to apply.\n\nJob Qualifications\nTypically requires a bachelor's degree in information technology or a related discipline and fifteen or more years of progressive professional experience in an information technology department primarily in systems administration.\nMay substitute equivalent working experience in the field in lieu of education. Must demonstrate a detailed and extensive technical expertise and application of system administration theories, concepts and practices including but not limited to system design, installation, configuration and management, performance tuning and measurement, back-up, recovery (including disaster recovery planning and testing), Linux OS, TCP/IP and related protocols and network concepts, security/firewalls, web servers, virtual machines, and load balancing. Must have advanced knowledge of HPC, data science, and Cyberinfrastructure (CI) environments.\nMust demonstrate advanced experience with designing and implementing complex computational workflows, code curation, and data management (including large datasets, multiple data formats, and metadata).\nExperience with compiling and running MPI-based code is required. Experience in the intercontinental movement of large scientific datasets on ultra-high-speed networks is essential.\nMust have project leadership skills including organizing, scheduling, conducting, and coordinating work assignments to meet project milestones or established completion dates.\nMust be able to provide leadership in developing new processes or systems, resolve unusually complex technical problems, and serve as spokesperson or leader on projects.\nMust be a technical expert in one or more information technology areas. Must be customer focused and possess:\nthe ability to identify issues, analyze and interpret data and develop innovative solutions to a variety of unusually complex problems;\nexcellent analytical, verbal and written communication skills to accurately document, report, and present findings to a variety of audiences including senior management, domain scientists, and senior external parties;\nexcellent interpersonal skills to influence and guide all levels of employees, including senior managers, domain scientists, and senior external parties;\nexcellent computer skills.\nAbility to work independently or in a team environment is essential as is the ability to work extended hours and travel as required.\nJob Category\nEngineering\nExperience Level\nSenior (8+ years)\nWorkstyle\nOnsite\nFull-Time/Part-Time\nFull-Time Salary\nPay Range Low\n116,480\nPay Range High\n208,505\nTravel Percentage Required\n0% - 25%\nRelocation Assistance Provided?\nYes\nUS Citizenship Required?\nNo\nClearance Required?\nNo","company":"Generalatomic","rawCompany":"generalatomic","city":"San Diego","state":"CA","isRemote":false,"isActive":false,"createdAt":"2026-07-15T12:28:44.563Z","occupations":[{"code":"15-1244.00","title":"Network and Computer Systems Administrators","slug":"network-and-computer-systems-administrators"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1211.00","title":"Computer Systems Analysts","slug":"computer-systems-analysts"}],"industries":[{"code":"541715","title":"Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)","slug":"research-and-development-in-the-physical-engineering-and-life-sciences-except-nanotechnology-and-biotechnology"},{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"518210","title":"Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services","slug":"computing-infrastructure-providers-data-processing-web-hosting-and-related-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Linux Systems Administrator","description":"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.\n\nWe are seeking a Linux Systems Administrator in San Diego, CA, for a full-time, on-site role that directly supports the mission-critical data infrastructure associated with the DIII-D National Fusion Facility, the world's largest magnetic fusion research tokamak managed by General Atomics.\n\nThis position requires you to deploy, manage, and maintain High-Performance Computing (HPC) systems and high-throughput storage infrastructure that handle massive volumes of experimental data collected from the DIII-D Tokamak fusion reactor.\n\nDaily responsibilities involve ensuring optimal system performance tuned for high ingestion rates and analysis workloads, quickly troubleshooting complex technical issues, administering large-scale data storage systems, and providing expert technical support to fusion scientists, engineers, and researchers, all while collaborating with cross-functional teams to enhance the reliability and scalability of the IT infrastructure critical for advancing fusion energy science.\n\nApplicants must be authorized to work for ANY employer in the U.S. We are unable to sponsor or take over sponsorship of an employment Visa.\n\nWith consultative direction and within an assigned functional unit, this position is responsible for applying advanced computational and data science principles to develop and maintain the smooth operation of multi-user computer systems in support of fusion energy research activities.\n\nDUTIES AND RESPONSIBILITIES:\nDevelops and monitors the assigned organization's policies and standards for the use of office automation equipment and computing resources.\nEnsures organization policies and standards are integrated with company policies and standards.\nDuties include user account administration, maintaining documentation, system hardware and software installation, allocation of mass storage space, effectively securing computing resources, and backing up systems to provide data integrity.\nFunctions in a consulting and technical leadership role with management on short and long-term planning to ensure the strategic and operational effectiveness of information systems service delivery is maintained, including a strategy for national HPC centers and cloud resources.\nCoordinates the assigned organization's electronic office systems activities, which may include: personal computers; server systems and associated software; and standard software products.\nAnalyzes new hardware and software, makes purchase recommendations, and plans and oversees the installation.\nAs a technical expert, responds to inquiries, identifies issues, and guides the development of innovative solutions to unusually complex and unique challenges. This involves close collaboration with domain scientists to develop and implement computational workflows and scientific software.\nMakes internal and external presentations and represents the company as the primary spokesperson on external project(s).\nMay act as a lead and participate in the selection, development, and supervision of information technology professional and support staff, and train internal users.\nPlans and manages day-to-day operation and maintenance of computer systems, including Windows,\nLinux and Unix operating systems and applications.\nCollaborates with research scientists and engineers to develop, implement, and optimize computational and data analysis software, tools, and workflows; assists in porting, benchmarking, and deploying complex scientific models.\nDetermines comprehensive solution(s) for unusually complex and unique system problems.\nTroubleshoots and evaluates hardware and software.\nRepresents the organization as a primary technical contact with suppliers and vendors.\nFunctions in a consulting and leadership role with management in information system planning.\nManages the implementation of system changes or upgrades including deployment, resource requirements, testing, documentation, integration, and compliance and safety.\nDevelops plans for future installation and implementation of applicable hardware and software based on new technology.\nActs as a lead giving guidance and direction to professional staff and may participate in the planning, selection, retention, and development of staff.\nMaintains the strict confidentiality of sensitive information.\nResponsible for observing all laws, regulations and other applicable obligations wherever and whenever business is conducted on behalf of the Company. Expected to work in a safe manner in accordance with established operating procedures and practices.\nOther duties as assigned or as required.\nWe recognize and appreciate the value and contributions of individuals with diverse backgrounds and experiences and welcome all qualified individuals to apply.\n\nJob Qualifications\nTypically requires a bachelor's degree in information technology or a related discipline and fifteen or more years of progressive professional experience in an information technology department primarily in systems administration.\nMay substitute equivalent working experience in the field in lieu of education. Must demonstrate a detailed and extensive technical expertise and application of system administration theories, concepts and practices including but not limited to system design, installation, configuration and management, performance tuning and measurement, back-up, recovery (including disaster recovery planning and testing), Linux OS, TCP/IP and related protocols and network concepts, security/firewalls, web servers, virtual machines, and load balancing. Must have advanced knowledge of HPC, data science, and Cyberinfrastructure (CI) environments.\nMust demonstrate advanced experience with designing and implementing complex computational workflows, code curation, and data management (including large datasets, multiple data formats, and metadata).\nExperience with compiling and running MPI-based code is required. Experience in the intercontinental movement of large scientific datasets on ultra-high-speed networks is essential.\nMust have project leadership skills including organizing, scheduling, conducting, and coordinating work assignments to meet project milestones or established completion dates.\nMust be able to provide leadership in developing new processes or systems, resolve unusually complex technical problems, and serve as spokesperson or leader on projects.\nMust be a technical expert in one or more information technology areas. Must be customer focused and possess:\nthe ability to identify issues, analyze and interpret data and develop innovative solutions to a variety of unusually complex problems;\nexcellent analytical, verbal and written communication skills to accurately document, report, and present findings to a variety of audiences including senior management, domain scientists, and senior external parties;\nexcellent interpersonal skills to influence and guide all levels of employees, including senior managers, domain scientists, and senior external parties;\nexcellent computer skills.\nAbility to work independently or in a team environment is essential as is the ability to work extended hours and travel as required.\nJob Category\nEngineering\nExperience Level\nSenior (8+ years)\nWorkstyle\nOnsite\nFull-Time/Part-Time\nFull-Time Salary\nPay Range Low\n116,480\nPay Range High\n208,505\nTravel Percentage Required\n0% - 25%\nRelocation Assistance Provided?\nYes\nUS Citizenship Required?\nNo\nClearance Required?\nNo","datePosted":"2026-07-15T12:28:44.563Z","dateModified":"2026-07-15T12:28:44.563Z","hiringOrganization":{"@type":"Organization","name":"Generalatomic","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"San Diego","addressRegion":"CA","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"2be5c2d677db51914aefb48d"},"url":"https://jobsearcher.com/jobs/2be5c2d677db51914aefb48d"}}