IT Systems Administrator jobs in California

Sr. IT Systems Administrator, IT Applications

Hawthorne, California

•

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, IT APPLICATIONS As a Senior IT Systems Administrator, you will serve as a key technical leader and Subject Matter Expert for our collaborative platforms-especially the full Atlassian suite

Full-time

USD 95,000.00 - 120,000.00 per year

IT Systems Administrator

Los Angeles, California

•

Today

Description IT Systems Administrator Company Overview A leading organization in the media, entertainment, and creative technology industry is seeking an IT Systems Administrator to support a highly collaborative and innovative environment. Based in Los Angeles, California, the company relies on modern technology solutions to support employees across multiple North American locations. This is an excellent opportunity for a technology professional who enjoys blending hands-on end-user support wi

Easy Apply

Full-time

USD 65,000.00 - 75,000.00 per year

Systems Administrator / IT Operations Engineer

San Francisco, California

•

3d ago

Position OverviewWe are seeking pragmatic, execution-focused Systems Administrators / IT Operations Engineers to join our team in the Bay Area. This role is tailored for hands-on IT operations professionals who thrive in high-volume, runbook-driven environments, managing daily ticket queues, running automated repair tooling, executing system queries, and maintaining infrastructure health. This is a pragmatic IT and Systems Administration rolenot a Software Engineer or deep Linux kernel developer

Easy Apply

Full-time

Depends on Experience

Senior IT Systems Administrator I

Mountain View, California

•

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

San Francisco, California

•

Today

Substack is building a new economic engine for culture, giving the brightest, most interesting, and most creative people on the internet the power of their own publishing platform. Substack empowers independent writers, artists, videographers, podcasters, and creators of all types to create, share, and make a living off their work through subscriptions, while offering them creative freedom, ownership, and a direct connection to their audiences. About the Role We're looking for an IT Systems Ad

Full-time

USD 120,000.00 - 160,000.00 per year

IT Systems Administrator - Millennium Space Systems

El Segundo, California

•

Today

IT Systems Administrator - Millennium Space Systems Company: Millennium Space Systems Millennium Space Systems (MSS), a part of Boeing Defense, Space and Security (BDS), is a fast, agile small satellite company focused on national security space. Our missions have direct impact to global security, like missile warning and Earth observation. Our team is curious, bold and innovative. We take risks, innovate and explore new techniques and technologies. We influence change because we challenge th

Full-time

USD 102,850.00 - 151,250.00 per year

Senior Systems Administrator, Classified IT

Costa Mesa, California

•

Today

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c

Full-time

USD 146,000.00 - 194,000.00 per year

Senior Systems Administrator - Scientific IT Infrastructure & Cybersecurity

Berkeley, California

•

Today

Lawrence Berkeley National Lab's (LBNL) Advanced Light Source (ALS) Division has an opening for a Senior Systems Administrator - Scientific IT Infrastructure & Cybersecurity. This position will supervise the ALS-IT team and provide strategic and technical direction for the systems, servers, networks, and cybersecurity infrastructure supporting more than 40 scientific beamlines, the ALS Control Room, and other mission-critical facility operations. Serving as the senior technical authority for th

Full-time

USD 179,000.00 - 218,000.00 per year

Senior Systems Administrator - Scientific IT Infrastructure & Cybersecurity

Berkeley, California

•

20d ago

Senior Systems Administrator Scientific IT Infrastructure & Cybersecurity - 107237 Division: AL-Advanced Light Source Lawrence Berkeley National Laboratory's (Berkeley Lab) Advanced Light Source (ALS) Division has an opening for a Senior Systems Administrator - Scientific IT Infrastructure & Cybersecurity. This position will supervise the ALS-IT team and provide strategic and technical direction for the systems, servers, networks, and cybersecurity infrastructure supporting more than 40 scientif

Full-time

$179,000 - $218,000

IT System Administrator

Los Angeles, California

•

10d ago

IT SYSTEM ADMINISTRATOR Freeform builds AI-native manufacturing systems that unify software, hardware, and physics to produce industrial-scale parts at the speed of human ideation. By treating manufacturing as a single integrated system, we unlock a new era of innovation where complex hardware is designed, built, and scaled without limits. We are looking for an early-career IT As a Junior System Administrator at Freeform. In this role, you will keep the systems that power our factory, engineer

Full-time

USD 80,000.00 - 100,000.00 per year

IT System Administrator 1/2 Flex (Infrastructure Services Specialist) (PCN 250122)

Remote or Anchorage, Alaska

•

Today

Salary: $3,336.75 - $4,001.25 Biweekly Location : Anchorage or Juneau, AK Job Type: Full Time Remote Employment: Flexible/Hybrid Job Number: 55238 Department: Administration Division: Office of Information Technology Opening Date: 09/11/2026 Closing Date: 9/21/2026 5:00 PM Alaska Position Open To: Alaska Residents Only Bargaining Unit: General Government Range: 21/23 Job Description This position is open to Alaska Residents only. Please check our residency definition to determine if you qualify.

Full-time

USD 3,336.75 - 4,001.25 per week

IT Engineer - Network Administrator

Remote

•

11d ago

Job Title: IT Engineer - Network Administrator Type: Contract Work Model: Remote offsite Responsibilities Manage and maintain organization's network infrastructure ensuring security, performance, and reliabilityConfigure, upgrade, patch, and troubleshoot Palo Alto firewallsConvert layer 4 rules to layer 7 using userID and appIDCreate custom appIDs for network security policiesManage Checkpoint firewalls in an IaaS environment (preferred)Deploy Palo Alto firewalls in an IaaS environment (preferr

Easy Apply

Contract

Depends on Experience

Director of IT Customer Service (Administrator II)

Chico, California

•

Today

Our Commitment to Equity, Diversity, and Inclusion: California State University (CSU), Chico is a comprehensive and residential public university, holding Hispanic-Serving Institution (HSI) designation. Chico State operates as part of the 23-campus CSU system, which educates the most ethnically, economically, and academically diverse student body in the nation. The University enrolls over 15,000 students, with over half identifying as first-generation college students. Chico State is committed t

Full-time

USD 150,000.00 per year

IT System Administrator (Sacramento)

Sacramento, California

•

Today

Peak Energy Job Title: IT System Administrator (Sacramento) Location: Sacramento, California Department: IT Reports To: Senior IT Manager Position Type: Full-time, In-person About the Company Peak Energy is the first American venture to advance globally proven sodium-ion battery systems as the storage standard for the new era of renewable energy on a resilient grid. Sodium-ion is cheap, readily available, and safe - making it the leading contender in a rapidly evolving market. Our leadersh

Full-time

USD 100,000.00 - 140,000.00 per year

Desktop Administrator II, IT Infrastructure

Remote or Hybrid in Calgary, Alberta

•

2d ago

Why Ryan? Hybrid and Remote Work OptionsAward-Winning CultureGenerous Personal Time Off (PTO) BenefitsUp to 20 Weeks of Parental Leave Top-up (Adoption IncludedMonthly Gym Membership OR Gym Equipment ReimbursementHealth and Dental Benefit Eligibility Effective Day OneRRSP with Employer MatchTuition Reimbursement After One Year of Service The Desktop Administrator II ("Desktop Administrator") maintains and manages distributed desktop and laptop systems and software, including, but not limited to

Full-time

USD 57,500.00 - 80,500.00 per year

IT Senior System Administrator

Torrance, California

•

Today

ABOUT US At PARTNER, success starts with the right mindset: connection, compassion, and curiosity. Whether consulting with clients or collaborating with colleagues, these principles guide how we work. We deliver engineering, environmental, and energy consulting, plus design services across the Americas, Europe, and beyond. As a leader in Commercial Real Estate (CRE), we're 1,600+ professionals strong in 40+ offices. Our mission is simple: create the best home for talented professionals. If you

Full-time

USD 85,000.00 - 100,000.00 per year

Systems Administrator/Information Assurance Support - Journeyman

Remote or Dayton, Ohio

•

Today

As an IT professional with MTSI, you will be responsible for installation, upgrading, monitoring, maintaining and supporting networks, software and hardware systems for multiple Special Access Programs (SAP) and Sensitive Compartmented Information (SCI) infrastructure. You will interact daily with program managers, engineers, and industry subject matter experts across multiple Service domains supporting Department of Defense (DoD) Services and Agencies, and Intelligence Community (IC) customers.

Full-time

Systems Administrator

Hayward, California

•

Today

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: IT Infrastructure and Operations Job Qualifications: Skills: Scripting, VMware Technologies, VMware vCenter Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: Check out this great opportunity to join one of GDIT's fastest long-standing growing programs! US

Full-time

USD 70,658.00 - 92,000.00 per year

Systems Administrator

Remote or Allentown, Pennsylvania

•

Today

Systems Administrator Location: Remote Duration: 6+ months Job Summary Client is seeking to upgrade Windows Servers and Oracle NetSuite from legacy versions to modern versions. Seeking candidates with strong Windows Server Administration and Oracle NetSuite Administration to help lead this project. Prior project management/leadership a plus! Job Description We are looking for a Systems Administrator to serve as the primary technology liaison for three business-critical applications supportin

Easy Apply

Full-time, Part-time, Contract, Third Party

Systems Administrator

Brea, California

•

Today

Come join a growing Aerospace Organization near you! This Jobot Job is hosted by: Chris Gorman Are you a fit? Easy Apply now by clicking the "Apply Now" button and sending us your resume. Salary: $140,000 - $160,000 per year A bit about us: Join a legacy manufacturing specialist known for delivering high-performance products to aerospace, defense, and industrial markets. With advanced capabilities across silicone sealants and insulation components, our client operates from a modern California

Full-time

USD 140,000.00 - 160,000.00 per year

IT Systems Administrator jobs in California, USA