IT Systems Administrator jobs in California

Sr. IT Systems Administrator, Mission Systems

California

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Today

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. SR. IT SYSTEMS ADMINISTRATOR, MISSION SYSTEMS SpaceX is looking for a highly skilled and versatile Launch Sr. IT Systems Administrator to support the networking, compute, and application support needs of our launch env

Full-time

USD 95,000.00 - 120,000.00 per year

IT Systems Administrator Microsoft 365 / Exchange- Hybrid

Hybrid in Vacaville, California

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Today

IT Systems Administrator Microsoft 365 / Exchange Position Overview Looking for an experienced IT Systems Administrator to support and maintain its Microsoft technology environment, infrastructure, security initiatives, and business-critical applications. T his is a hands-on, mid-level IT role with a strong emphasis on Microsoft 365, Exchange, Active Directory, Azure, and hybrid infrastructure administration. The ideal candidate will have practical experience managing Microsoft environments, p

Contract

45-55/hr

Systems Administrator - Enterprise IT Operations

San Mateo, California

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Today

Description: On-site in San Mateo, CA Our client seeks a Systems Administrator to support, secure, and optimize enterprise IT operations. The role includes end-user system support and endpoint deployment across Mac, Windows, and Linux. The successful candidate will bring technical expertise, organized execution, and a collaborative approach to maintain a modern and secure IT environment. Due to client requirements, applicants must be willing and able to work on a w2 basis. For our w2 consulta

Contract

IT Systems Administrator & Operations Specialist, MacOS, MDM, Google Workspace Required, Work From Home, 6 Month Contract - G

Remote

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3d ago

IT Systems Administrator & Operations Specialist, MacOS, MDM, Google Workspace Required, Work From Home, 6 Month Contract We are seeking a hands-on IT Systems Administrator & Operations Specialist to independently operate and maintain the internal IT environment for a globally distributed workforce. This is a 6 month contract opportunity. This position is 100% Remote and ONLY open for US candidates. Must be able to prove US residency. This is an individual contributor role focused on reliable

Easy Apply

Contract

30 - 35

Senior Systems Administrator, IT Applications

Remote or Hybrid in Manila, Metro Manila

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Today

Why Ryan? Flexible Work EnvironmentAward-Winning CultureWorld-Class Benefits and CompensationAccelerated Career PathCommunity OutreachMentorship OpportunitiesWellness-Centric Benefits The Senior Systems Analyst, ITSM, works under the direction of the IT Service Management Administrator to analyze business needs and deliver optimal solutions using ITSM best practices and tools, including the Ivanti suite. This role is critical in ensuring ITSM processes are effectively implemented, aligned with

Full-time

Senior Systems Administrator, IT Applications

Remote or Hybrid in Hyderabad, Telangana

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Today

Why Ryan? Global Award-Winning CultureFlexible Work EnvironmentGenerous Paid Time OffWorld-Class Benefits and CompensationRapid Growth OpportunitiesCompany Sponsored Two-Way TransportationExponential Career Growth The Senior Systems Administrator, ITSM, analyzes business requirements and delivers optimal solutions using ITSM best practices and tools, including the Ivanti suite. This role is critical in ensuring ITSM processes are effectively implemented, aligned with business goals, and adhere

Full-time

IT Systems Administrator

Remote or Alameda, California

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Today

Company Overview Kairos Power is a new nuclear energy technology and engineering company whose mission is to enable the world's transition to clean energy, with the ultimate goal to dramatically improve people's quality of life while protecting the environment. This goal will be accomplished through the commercialization of the fluoride-salt-cooled, high-temperature reactor (FHR) that can be deployed with robust safety, affordable costs, and flexible operation to accommodate the expansion of va

Full-time

USD 108,700.00 - 127,900.00 per year

IT Systems Administrator

San Diego, California

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Today

Taxable Entity RED PEAK TECHNICAL SERVICES LLC Job Title IT Systems Administrator Location CA San Diego NIWC Pacific - San Diego, CA 92106 US (Primary) Category IT and Computer Related Job Type Full-time Typical Pay/Range $38.46 to $45.67 Hourly Education Associate Degree Travel None Security Clearance Required Secret POSITION OVERVIEW AND PRIMARY DUTIES AND RESPONSIBILITIES (ESSENTIAL FUNCTIONS): Red Peak Technical Services, LLC a subsidiary of Alutiiq, LLC is seeking an IT S

Full-time

USD 38.46 - 45.67 per hour

IT Systems Administrator

San Francisco, California

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Today

About Us At LangChain, our mission is to make intelligent agents ubiquitous. We build the foundation for agent engineering in the real world, helping developers move from prototypes to production-ready AI agents that teams can rely on. We began as widely adopted open-source tools and have grown to also offer a platform for building, evaluating, deploying, and operating agents at scale. With $125M raised at Series B from IVP, Sequoia, Benchmark, CapitalG, and Sapphire Ventures, we're at a stage

Full-time

USD 120,000.00 per year

IT Systems Administrator

Victorville, California

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Today

About Mach Industries Founded in 2023, Mach Industries is a rapidly growing defense technology company focused on developing next-generation autonomous defense platforms. At the core of our mission is the commitment to delivering scalable, decentralized defense systems that enhance the strategic capabilities of the United States and its allies. With a workforce of approximately 350 employees, we operate with startup agility and ambition. Our vision is to redefine the future of warfare through

Full-time

USD 80,000.00 - 120,000.00 per year

IT Systems Administrator (Linux Admin)

El Segundo, California

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Today

CHAOS Industries is redefining modern defense with a multi-product portfolio that gives the ultimate advantage-domain dominance. The company's products are powered by Coherent Distributed Networks (CDN ), empowering warfighters, commercial air operators, and border protection teams to act faster, adapt rapidly, and stay ahead of evolving threats. CHAOS Industries was founded in 2022 and has raised a total of $1 billion in funding from leading investors, including 8VC, Accel, and Valor Equity Par

Full-time

USD 140,000.00 - 200,000.00 per year

Senior IT Systems Administrator

Remote or New York, New York

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Today

Circle (NYSE: CRCL) is one of the world's leading internet financial platform companies, building the foundation of a more open, global economy through digital assets, payment applications, and programmable blockchain infrastructure. Circle's platform includes the world's largest regulated stablecoin network anchored by USDC, Circle Payments Network for global money movement, and Arc, an enterprise-grade blockchain designed to become the Economic OS for the internet. Enterprises, financial insti

Full-time

USD 112,500.00 - 134,167.00 per year

IT Systems Administrator

Remote or Michigan

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Today

ABOUT SLATE At Slate, we're building safe, reliable vehicles that people can afford, personalize and love-and doing it here in the USA as part of our commitment to reindustrialization. The spirit of DIY and customization runs throughout every element of a Slate, because people should have control over how their trucks look, feel, and represent them. WHO WE ARE LOOKING FOR The IT Systems Administrator is responsible for administering and improving enterprise identity, endpoint management, and

Full-time

Senior IT Systems Administrator (Azure Windows Admin)

El Segundo, California

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Today

Full-time

USD 140,000.00 - 200,000.00 per year

Senior IT Systems Administrator I

Mountain View, California

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Today

Harness is the AI Software Delivery Platform company, led by technologist and entrepreneur Jyoti Bansal (founder of AppDynamics, acquired by Cisco for $3.7B). Harness has raised approximately $570M in funding and is valued at $5.5B, backed by leading investors including Goldman Sachs, Menlo Ventures, IVP, Unusual Ventures, Citi Ventures, and more. As AI accelerates code creation, the real bottleneck has shifted to everything after the code - testing, deployments, application security, reliabilit

Full-time

USD 115,000.00 - 130,000.00 per year

IT Systems Administrator 3 (PCN 030323)

Remote or Anchorage, Alaska

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Today

Salary: $59.22 - $62.18 Hourly Location : Anchorage or Juneau, AK Job Type: Full Time Remote Employment: Flexible/Hybrid Job Number: 55146 Department: Law Division: Civil Opening Date: 11/02/2026 Closing Date: 11/12/2026 5:00 PM Alaska Division: Civil Position Open To: Alaska Residents Only Bargaining Unit: Supervisory Range: 25 Job Description Come join the State of Alaska! This job class uses Competency Based minimum qualifications (MQs). Please read the Competency Based MQ instructions below

Full-time

USD 59.22 - 62.18 per hour

IT Systems Administrator

San Luis Obispo, California

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Today

IT Systems Administrator Job Summary: The IT Systems Administrator is responsible for managing, optimizing, and securing the company's IT infrastructure, including networks, servers, and software systems. This role requires exercising discretion and independent judgment regarding IT solutions that directly impact business operations, cybersecurity, compliance, and system efficiency. The IT Systems Administrator collaborates across departments to develop strategies, maintain regulatory complian

Full-time

USD 90,000.00 - 120,000.00 per year

IT Security Administrator

San Diego, California

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Today

At PMAT, we work on mission-critical systems that directly support the warfighter, designing, building, and securing modern digital capabilities across cloud, data, and software environments. Our teams tackle complex, real-world challenges where delivery matters more than theory, and innovation is driven by curiosity, collaboration, and purpose. In this role, you'll support PMAT's internal cybersecurity and IT operations, working alongside IT leadership to strengthen endpoint security, remediat

Full-time

IT System Administration - Senior/Specialist (ServiceNow System Administrator )

Remote or Olympia, Washington

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Today

Salary: $94,620.00 - $127,248.00 Annually Location : Thurston County - Olympia, WA Job Type: Full Time - Permanent Remote Employment: Flexible/Hybrid Job Number: 2026-08113 Department: Dept of Children, Youth, and Families Division: Information Technology Opening Date: 11/05/2026 Closing Date: 11/19/2026 11:59 PM Pacific Description Our vision is to ensure that "Washington state's children and youth grow up safe and healthy -thriving physically, emotionally, and academically, nurtured by family

Full-time

USD 94,620.00 - 127,248.00 per year

IT Support Administrator

Morgan Hill, California

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Today

MACOM (NASDAQ: MTSI) is a global leader in the design and manufacture of advanced semiconductor products across a diverse range of end markets, including Data Centers, Telecommunications, Industrial and Aerospace and Defense. We develop innovative, cutting-edge technologies and products across the spectrum of radio frequency (RF), microwave, millimeter wave, photonics and high-speed analog technologies. Our solutions support critical network infrastructure applications like artificial intelligen

Full-time

USD 24.00 - 38.00 per hour

IT Systems Administrator jobs in California, USA