Top 14 Senior it administrator Jobs in Northridge, Ca

Senior IT Administrator
CesiumAstro —El Segundo, CA
- $99,000 - $117,000 a year
- Full-time
- Computer science
- Microsoft Outlook
- Computer Science
- Health savings account
- Health insurance
12d
Sr. IT Systems Administrator, IT Applications
SpaceX —Hawthorne, CA
- $95,000 - $150,000 a year
- Email
- Computer Science
- 3 years
- SQL
- Paid parental leave
- Employee stock purchase plan
9d
Senior NetSuite Administrator
EVgo —Los Angeles, CA
- $122,100 - $152,600 a year
- Full-time
- Remote
- Customer service
- System design
- Microsoft Office
- Commuter assistance
- Health savings account
Quick Apply
Senior Network System Administrator
Joni and Friends —Agoura Hills, CA
- $98,000 - $115,000 a year
- Weekends as needed
- Hybrid work
- Microsoft Outlook
- Computer Science
- Word processing
Quick Apply
Senior Contract Administrator (IT Purchasing Specialist)
Cordoba Corporation —Los Angeles, CA
- $108,000 - $122,000 a year
- Full-time
- 7 years
- Office
- Bachelor's degree
Quick Apply
Sr. Network Administrator
Honda —Santa Clarita, CA
- $100,000 - $135,000 a year
- Full-time
- Computer science
- Computer Science
- System design
22h
Senior Application Administrator
Commonwealth Business Bank —Los Angeles, CA
- $85,000 - $130,000 a year
- Full-time
- Computer science
- Computer Science
- English
- Paid holidays
- Health insurance
Quick Apply
Sr. Network Administrator
Softnet Ventures —Los Angeles, CA
- Rotating shift
- 7 years
- Computer Science
- Writing skills
Senior Cloud Administrator
SECURITY INDUSTRY SPECIALISTS INC —Culver City, CA
- $135,000 a year
- Full-time
- Google Workspace
- 7 years
- Computer Science
- Dental insurance
- 401(k)
Quick Apply
Senior Systems Administrator
Tecolote Research, Inc. —El Segundo, CA
- $65,000 - $85,000 a year
- Full-time
- Mid-level
- Office
- Windows
- Paid jury duty
- AD&D insurance
Senior Engineering CAD Administrator
K2 Space —Los Angeles, CA
- $120,000 - $160,000 a year
- 5 years
- Bachelor of Science
- System design
- Paid parental leave
- Health insurance
Sr. Principal Systems Administrator
Raytheon —El Segundo, CA
- $118,300 - $224,900 a year
- Full-time
- 5 years
- Mentoring
- Scripting
- Paid holidays
- Disability insurance
Principal Linux Systems Administrator / Sr. Principal Linux Systems Administrator (AHT)
Northrop Grumman —Redondo Beach, CA
- $103,600 - $193,900 a year
- Overtime
- Computer science
- Computer Science
- 5 years
- Paid holidays
- Disability insurance
Sr. Systems Administrator
Business Intelligence & Informatics Consultant Services, Inc. (BIICS, Inc) —United States
- Full-time
- Computer science
- Azure
- Computer Science
- Health insurance
Quick Apply
1d

Discover related jobs

Based on your search for senior it administrator jobs.

Military Service - U.S. Space Force, Cyber Security
Military Service - U.S. Space Force —Santa Clarita, CA
Courses in science, technology, engineering and mathematics (STEM) are desirable. They can travel on Air Force aircraft to almost any U.S. state and many…
From $60,000 a year
Associate Technical Account Manager
Yardi Systems, Inc. —Oxnard, CA
Provide technical software support, set-up, and implementation guidance to clients across a suite of products, delivering assistance via email and phone.
$31.25 - $32.81 an hour

Show more related jobs

Explore jobs in cities nearby

Check out jobs in cities near your current location, Columbus

Senior IT Asset Management Administrator
Encova Insurance —Columbus, OH
Lead software entitlement management, license allocation, and compliance oversight within ServiceNow SAM. Serve as the primary technical and operational owner…
$77,450 - $123,921 a year
Senior System Administrator
Anduril Industries —Ashville, OH
Write instructional documentation and convey highly technical ideas in non-technical terms. Currently possesses and maintains a DoD approved 8570/8140 baseline…
$126,000 - $167,000 a year
Quick Apply

Show more jobs in cities nearby

I want to receive the latest job alert for senior it administrator in northridge, ca

By signing in to your account, you agree to SimplyHired's Terms of Service and consent to our Cookie and Privacy Policy.

Explore jobs in more locations

senior it administrator jobs near northridge, ca

Application Administrator jobs in Los Angeles, CA

Senior Systems Administrator jobs in El Segundo, CA

Senior Contract Administrator jobs in Los Angeles, CA

Senior Administrator jobs in Los Angeles, CA

Application Administrator jobs in Minneapolis, MN

Application Administrator jobs in Boston, MA

Adult Residential Facility Administrator jobs in California

Application Administrator jobs in Ohio

Benefits Administrator jobs in New York, NY

Arts Administrator jobs in Columbus, OH

System Administrator jobs in Huntsville, AL

Application Administrator jobs in Remote

Senior Network Engineer jobs in Chicago, IL

Senior Systems Administrator jobs in Tempe, AZ

Commonwealth Fusion Systems jobs in Devens, MA

Servicon Systems jobs in Los Angeles, CA

Senior Systems Administrator jobs in Maryland

Senior Systems Administrator jobs in Stanford, CA

Senior Graphic Designer jobs in Remote

Senior Systems Administrator jobs in Kansas

Senior IT Administrator

CesiumAstro -
El Segundo, CA

Apply Now

Job Details

Full-time
$99,000 - $117,000 a year
12 days ago

Benefits

Stock options
Health savings account
Health insurance
Dental insurance
Flexible spending account
Vision insurance
Retirement plan

Qualifications

Endpoint Security
Cloud identity and access management (IAM)
Content creation for technical audiences
Microsoft Outlook
IT user and group management
GPO
Server troubleshooting
Configuration management
Public Cloud
AWS
Cloud service support
Computer hardware
Desktop (troubleshooting support)
Remote access management
Remote access software
Azure AD
Customer support ticket management
Networking equipment (troubleshooting support)
Microsoft Teams
SharePoint
MFA
Microsoft 365 support
Access control management
VPN management
Network infrastructure management
Desktop administration
Standard operating procedures (SOPs)
IT department experience
Ticketing system technical support
Standard operating procedures drafting

Full Job Description

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.

At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team.

We are looking to add a Senior Information Technology (IT) Administrator to our team. This role is a project-focused role responsible for planning and executing enterprise IT initiatives at CesiumAstro. In this position, you will own the delivery of system migrations, integrations, companywide upgrades, and new application rollouts that support a growing aerospace and defense organization. The Senior IT Administrator operates with general supervision and exercises independent judgment in diagnosing, prioritizing, and resolving a wide range of technical issues affecting end users and enterprise systems.

JOB DUTIES AND RESPONSIBILITIES

Lead and execute system migration projects including planning, testing, cutover, and post-migration support.
Drive system integrations across enterprise platforms to improve interoperability and reduce manual workflows.
Coordinate and implement companywide software and hardware upgrades with minimal disruption to operations.
Manage Active Directory cleanup efforts including account audits, group policy reviews, and directory hygiene.
Plan and execute new application rollouts including stakeholder coordination, testing, and end user enablement.
Administer and maintain user accounts, groups, and permissions in Active Directory and/or Azure AD/Entra ID.
Manage endpoint configuration, imaging, patching, and software deployment via MDM platforms (e.g., Intune).
Monitor system health and assist in administration of servers, cloud environments, network infrastructure, M365 advanced skills, including Purview, Security, and Entra ID.
Support IT security practices including access reviews, MFA enforcement, and endpoint compliance.
Mentor junior helpdesk staff and provide guidance on escalated technical issues.
Develop and maintain technical documentation including SOPs, knowledge base articles, and troubleshooting guides.
Identify recurring issues, contribute to root-cause analysis, and implement process improvements.
Participate in IT projects including system migrations, office expansions, and tool evaluations.

JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS

5–8 years of IT support or systems administration experience required (3–6 years with a relevant M.S.).
B.S. in Information Technology, Computer Science, or related field preferred; equivalent experience considered.
Complete understanding and wide application of IT support and systems administration principles.
Advanced troubleshooting skills across hardware, software, networking, and cloud-connected environments.
Working knowledge of IT security practices including endpoint compliance, access management, and MFA.
Ability to develop technical documentation and SOPs to support knowledge sharing and process consistency.
Proficiency in Microsoft 365 (Outlook, Teams, SharePoint, OneDrive).
Experience with AWS cloud configuration and support.
Expertise in Active Directory Azure AD/Entra ID, and VPN and remote access tools..
Knowledge of IT ticketing systems.
Strong oral and written communication skills.
Solid troubleshooting and problem-solving skills.
Strong customer service orientation.

PREFERRED EXPERIENCE

Experience in a manufacturing, aerospace, or defense environment.
CompTIA A+, Network+, Security+, Microsoft 365 Certified, or ITIL Foundation.
Familiarity with ITAR/export compliance requirements in an IT context.

CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate’s work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans.

CesiumAstro is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.

Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Apply Now

Refine Your Search

senior it administrator jobs in northridge, ca

Senior IT Administrator

Sr. IT Systems Administrator, IT Applications

Senior NetSuite Administrator

Senior Network System Administrator

Senior Contract Administrator (IT Purchasing Specialist)

Sr. Network Administrator

Senior Application Administrator

Sr. Network Administrator

Senior Cloud Administrator

Senior Systems Administrator

Senior Engineering CAD Administrator

Sr. Principal Systems Administrator

Principal Linux Systems Administrator / Sr. Principal Linux Systems Administrator (AHT)

Sr. Systems Administrator

Discover related jobs

Explore jobs in cities nearby

I want to receive the latest job alert for senior it administrator in northridge, ca

Explore jobs in more locations

JOB DUTIES AND RESPONSIBILITIES

JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS

PREFERRED EXPERIENCE

Job Seeker Tools

Employer Tools

Browse

Stay Connected