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Networking System Administrator Jobs in California

MANTECH

Network System Administrator

El Segundo, CA · On-site

$74K - $100K/yr

The Network/System Administrator (NSA) -III will leverage their strong technical background and knowledge to support Special Access Programs (SAPs) and other classified networks supporting SSC ...

MANTECH

Network System Administrator

El Segundo, CA · On-site

$74K - $100K/yr

The Network/System Administrator (NSA) -III will leverage their strong technical background and knowledge to support Special Access Programs (SAPs) and other classified networks supporting SSC ...

ManTech

Network System Administrator

El Segundo, CA

$107K - $179K/yr

The Network/System Administrator (NSA) -III will leverage their strong technical background and knowledge to support Special Access Programs (SAPs) and other classified networks supporting SSC ...

Kros-Wise

System Administrator

San Diego, CA · On-site

$100K - $135K/yr

Overview We are seeking a mission-focused Systems Administrator to support Navy enterprise IT ... Document network/system configurations and standard operating procedures * Coordinate with ...

Kros-Wise

System Administrator

San Diego, CA

Overview We are seeking a mission-focused Systems Administrator to support Navy enterprise IT ... Document network/system configurations and standard operating procedures * Coordinate with ...

Kros-Wise

System Administrator

San Diego, CA · On-site

$100K - $135K/yr

Overview We are seeking a mission-focused Systems Administrator to support Navy enterprise IT ... Document network/system configurations and standard operating procedures * Coordinate with ...

Astreya

System Administrator

Cupertino, CA · On-site

The System Administrator is expected to facilitate operational support to and on behalf of the ... Experience with networking management, configurations and changes * Experience with systems and ...

New

AgreeYa Solutions

System Administrator

Modesto, CA · On-site

The System Administrator provides support for system administration and network components inclusive of server configurations , emergency restoration services , backups, and maintenance. This ...

AVUM INC

System & Network Administrator

Malibu, CA · On-site

$100K - $130K/yr

Serves as on-premises system administrator for physical infrastructure and provides technical ... Knowledge of networking protocols, firewalls, and VPN configurations Preferred Qualifications

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Networking System Administrator information

What is the difference between Networking System Administrator vs Network Engineer?

AspectNetworking System AdministratorNetwork Engineer
CertificationsCompTIA Network+, Cisco CCNACompTIA Network+, Cisco CCNA, CCNP
Work EnvironmentMaintains and supports existing network infrastructureDesigns and implements new network solutions
Primary FocusNetwork stability, troubleshooting, and daily operationsNetwork design, planning, and deployment
Employer & Industry UsageIT departments across various industriesTelecommunications, large enterprises, network consulting

While both roles involve network knowledge, Networking System Administrators focus on maintaining and troubleshooting existing networks, whereas Network Engineers are responsible for designing and implementing new network solutions. The roles often overlap, but their primary responsibilities and focus areas differ.

Is sysadmin an entry level job?

A networking system administrator role is typically not considered entry level, as it usually requires several years of experience, knowledge of networking protocols, and skills in managing network infrastructure. Entry-level positions in IT may include help desk or support technician roles, with sysadmin positions often requiring certifications like CompTIA Network+ or Cisco CCNA. However, some organizations offer junior or associate sysadmin roles for those starting their careers in network management.

Is a sysadmin job in high demand?

Networking system administrators are in high demand due to the increasing reliance on network infrastructure and cybersecurity. Employers seek professionals with skills in network configuration, security protocols, and certifications like Cisco or CompTIA, making the role generally stable and well-compensated.

What does a network systems administrator do?

A network systems administrator manages and maintains an organization’s computer networks, including servers, switches, and routers. They troubleshoot network issues, ensure security protocols are in place, and often configure network hardware and software using tools like firewalls and monitoring systems. Strong knowledge of networking protocols, security practices, and certifications such as CompTIA Network+ are common requirements.

How much does a sysadmin earn?

A networking system administrator typically earns between $60,000 and $90,000 annually, depending on experience, certifications, and location. Entry-level positions may start lower, while experienced sysadmins with certifications like Cisco or Microsoft can earn higher salaries. Salaries also vary based on the complexity of the network environment and organizational size.
What are popular job titles related to Networking System Administrator jobs in California? For Networking System Administrator jobs in California, the most frequently searched job titles are:
What job categories do people searching Networking System Administrator jobs in California look for? The top searched job categories for Networking System Administrator jobs in California are:
What cities in California are hiring for Networking System Administrator jobs? Cities in California with the most Networking System Administrator job openings:
Networking System Administrator jobs near you
Infographic showing various Networking System Administrator job openings in California as of July 2026, with employment types broken down into 1% As Needed, 84% Full Time, 11% Part Time, 1% Temporary, and 3% Contract. Highlights an 94% Physical, 2% Hybrid, and 4% Remote job distribution.
Network System Administrator

Network System Administrator

MANTECH

El Segundo, CA • On-site

$74K - $100K/yr

Full-time

Posted 20 days ago

ManTech rating

9.0

Company rating: 9.0 out of 10

Based on 14 frontline employees who took The Breakroom Quiz

28th of 217 rated software companies

Job description

MANTECH seeks a motivated, career and customer-oriented Network/System Administrator (NSA) -III to join our team in El Segundo, CA.

The Network/System Administrator (NSA) -III will leverage their strong technical background and knowledge to support Special Access Programs (SAPs) and other classified networks supporting SSC Directorates and/or AFSPC Operational Units. This role supports day-to-day operations for Collateral, Sensitive Compartmented Information (SCI), and Special Access Program (SAP) activities in a five-day-a-week, in-office environment.

Responsibilities include but are not limited to:

  • Install, maintain, audit, and support a secure MS Windows network environment, file servers, firewalls, and network access while troubleshooting anomalies to ensure optimum performance.
  • Maintain internet applications and protocols including IP, TCP, HTTP, HTTPS, FTP, and SSL.
  • Interface directly with local customers and IT staff to provide technical guidance and quickly resolve network or desktop support issues.
  • Perform periodic system maintenance, hardware upgrades and replacements, firmware updates, and system configuration changes.
  • Manage the scheduled data backup library, including executing tape backups and arranging safe storage at customer locations or off-site facilities.
  • Prepare systems for operational use, support operational tests, and attend planning and requirements meetings with program managers and stakeholders.
  • Must meet position and certification requirements outlined in DoD Directive 8570.01-M for Information Assurance Technician Level 2 (IAT Level II) within 6 months of hire (e.g., Security+ CE, CCNA, CySA+, CND).

Minimum Qualifications:

  • Bachelor’s degree in a related technical area; an additional 4 years of related experience might be substituted for a degree.
  • 6+ years of total related experience
  • 4+ years of relevant SCI or SAP experience.

Preferred Qualifications:

  • Thorough knowledge of Microsoft Windows Server (2000/2003/2007), Microsoft Exchange Server 2003, and Windows XP/Vista operating systems administration and associated hardware.
  • Applicable Windows professional certifications based on OS requirements for the supported organization.
  • Working knowledge of Local Area Network (LAN) and Wide Area Network (WAN) technologies, data backup systems, and communication security (COMSEC) integration.
  • Working knowledge of JAFAN 6/0, DCID/JAFAN 6/3, DCID/JAFAN 6/9, and Joint DODIIS/Cryptologic SCI Information Systems Security Standards, Common Criteria, and System Security Policy as they relate to C&A for legacy systems.
  • Experience with PL1 & PL2 systems, familiarity with PL3 & PL4 cross-domain solutions, and deep familiarity with security policies, manual ICDs, JAFANs, and DoD Manuals.

Clearance Requirements:

  • An active Top Secret clearance with SCI eligibility is required to start.
  • Applicants must be eligible for access to Special Access Programs (SAPs).
  • Must have a willingness to submit to a Counterintelligence polygraph examination.

Travel:

This role requires regular travel within the organizational Area of Responsibility, which may include both air and ground transportation.

Physical Requirements:

  • Must be able to remain in a stationary position 50% of the time in closed-area offices.
  • Must be able to lift up to 50 pounds.
  • Need to occasionally move about inside and outside the office to access files, cabinets, or safes, and to install or remove computer-related equipment.

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