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Junior System Jobs in California (NOW HIRING)

As a Junior System Administrator , you'll be part of a team that helps maintain and support DoD information systems that enable Navy training and mission readiness. This is an excellent opportunity ...

Junior System Engineer

Fremont, CA · On-site

$80K - $95K/yr

We are seeking a highly motivated System Engineer to join our Engineering team. This role will focus on the design, deployment, validation, and troubleshooting of high-performance computing systems ...

Junior System Engineer

Fremont, CA · On-site

$80K - $95K/yr

We are seeking a highly motivated System Engineer to join our Engineering team. This role will focus on the design, deployment, validation, and troubleshooting of high-performance computing systems ...

We are seeking a highly motivated System Engineer to join our Engineering team. This role will focus on the design, deployment, validation, and troubleshooting of high-performance computing systems ...

The Junior Systems Engineer will support system design, integration, and testing activities across ... Responsibilities * Assist with defining system requirements and architecture * Support system ...

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We are looking for a Junior Systems Administrator to join our IT team and provide day-to-day ... * Assist with system monitoring, backups, endpoint security, and routine maintenance.

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We are looking for a Junior Systems Administrator to join our IT team and provide day-to-day ... * Assist with system monitoring, backups, endpoint security, and routine maintenance.

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We are looking for a Junior Systems Administrator to join our IT team and provide day-to-day ... * Assist with system monitoring, backups, endpoint security, and routine maintenance.

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Jr. Systems Administrator

Modesto, CA · On-site

$35 - $39/hr

Develop and execute test plans to check infrastructure and system performance * Preferably has experience working in a consulting environment similar to ours - this would be a huge plus! * Possess ...

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Jr. Systems Administrator

Modesto, CA · On-site

$35 - $39/hr

Develop and execute test plans to check infrastructure and system performance * Preferably has experience working in a consulting environment similar to ours - this would be a huge plus! * Possess ...

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Junior System information

What is a junior system administrator?

Junior System Administrators are entry-level IT professionals who help maintain, monitor, and support an organization’s computer systems and networks. They assist with tasks such as installing software, managing user accounts, troubleshooting issues, and performing routine system maintenance. Often working under the guidance of more experienced administrators, they play a crucial role in ensuring that IT infrastructure runs smoothly and securely.

What types of projects and responsibilities can a junior system administrator expect during their first year on the job?

As a Junior System Administrator, you can expect to handle tasks such as monitoring system performance, assisting with software and hardware installations, performing routine backups, and responding to basic support tickets. You'll often work closely with senior administrators to learn troubleshooting techniques and gradually take on more complex issues. Collaboration with IT support teams and end users is common, helping you build both technical and communication skills. Over time, you'll gain exposure to network management and security protocols, preparing you for more advanced responsibilities in the future.

What are the key skills and qualifications needed to thrive as a junior system administrator, and why are they important?

To thrive as a Junior System Administrator, foundational knowledge of operating systems, basic networking, and IT troubleshooting is essential, typically supported by a relevant degree or certification such as CompTIA A+ or Microsoft Certified: Windows Server Fundamentals. Familiarity with system management tools like Active Directory, virtualization platforms, and ticketing systems is commonly required. Strong problem-solving skills, attention to detail, and effective communication help junior admins stand out when supporting users and collaborating with IT teams. These skills ensure smooth system operations, prompt issue resolution, and reliable support within an organization.

What is the difference between Junior System vs Junior Network Administrator?

AspectJunior SystemJunior Network Administrator
Required CertificationsCompTIA A+, Microsoft Certified FundamentalsCompTIA Network+, Cisco CCNA
Work EnvironmentSupporting servers, operating systems, hardwareManaging network infrastructure, routers, switches
Industry UsageIT support, system maintenance rolesNetwork setup, troubleshooting, security

Junior System roles focus on supporting and maintaining computer systems and hardware, while Junior Network Administrator roles concentrate on managing network infrastructure. Both positions require foundational certifications and are common entry points in IT, but they specialize in different areas of technology support and management.

How to become a junior system?

To become a junior system administrator, candidates typically need a foundational understanding of computer systems, networks, and operating systems, often gained through an associate degree or relevant certifications like CompTIA A+ or Network+. Entry-level experience through internships or hands-on practice with tools such as Windows Server or Linux is also valuable. Developing problem-solving skills and familiarity with basic scripting can enhance job prospects in this role.

Is a junior system an entry level job?

A Junior System role is typically considered an entry-level position in IT and systems administration, suitable for candidates with limited professional experience. It often involves basic tasks such as troubleshooting, system monitoring, and supporting senior staff, and may require foundational knowledge of operating systems and networking.

What are the most commonly searched types of System jobs in California?

The most popular types of System jobs in California are:

What cities in California are hiring for Junior System jobs?

Cities in California with the most Junior System job openings:

Infographic showing various Junior System job openings in California as of August 2026, with employment types broken down into 1% As Needed, 87% Full Time, 10% Part Time, and 2% Contract. Highlights an 91% Physical, 3% Hybrid, and 6% Remote job distribution.

Junior System Administrator

ASEC

Ridgecrest, CA • Hybrid

$90K - $105K/yr

Full-time

Medical, Dental, Vision, Retirement

This job post has expired 1 day ago. Applications are no longer accepted.


Job description

Description

Location: NAWS China Lake, CA

Security Clearance Requirement: Active Top Secret

Telework Eligible? No, work will be performed on site at NAWS China Lake

Support mission-critical Navy training systems at NAWS China Lake, CA!


As a Junior System Administrator, you'll be part of a team that helps maintain and support DoD information systems that enable Navy training and mission readiness. This is an excellent opportunity to build your technical skills while gaining hands-on experience in a secure, mission-driven environment.


Key Responsibilities:

  • Plan, test, and implement system upgrades to ensure optimal performance and reliability.
  • Support RMF and ATO activities, including vulnerability scanning (ACAS, Evaluate STIG) and development of accreditation artifacts.
  • Integrate new software applications within complex, mission-critical environments.
  • Apply and maintain operating system security configurations in alignment with DISA STIG requirements.
  • Identify and resolve system flaws, implementing technical controls to strengthen cybersecurity.
  • Conduct vulnerability scans and assessments to safeguard systems from potential threats.
  • Troubleshoot and resolve software issues within integrated environments to maintain seamless operations.
  • Ensure compliance with DoD RMF, FISMA, NIST 800-53, and DoD SRG requirements.

This description outlines the general nature and scope of the role. Additional duties may be assigned as necessary.

Requirements

What You'll Bring:

  • This position will require an associate's degree in Computer Science, Information Systems Management, Cybersecurity, or a related area of study and at least one year of experience as a system administrator. 
  • Without an associate's degree, candidates must have at least 3 years of related, system administration experience. 
  • Working knowledge of vCenter/VMware is required.
  • Proficiency with Linux operating systems is required.
  • Experience managing DoD Host Based Security Systems (HBSS) is preferred.
  • Demonstrated experience managing Domain Name System (DNS) performance and reliability.
  • Proven experience implementing and maintaining local and group policies.
  • Hands-on experience with Microsoft Active Directory (AD) domain controller servers for managing authentication, authorization, and network resources.
  • Knowledge of log aggregation and analysis across multiple sources.
  • Familiarity with Windows PowerShell is preferred.

IT Certification Requirements:

  • CompTIA Security+ certification is required.
  • Operating system certification (e.g., Linux) is preferred. If no OS cert is held at the time of hire, it may be required within 90 days. 
  • Please upload copies of your relevant certifications.

Equally Important:

  • Ability to build positive, collaborative relationships across teams and with external partners.
  • Effective communicator with strong verbal and written skills.
  • Proactive, self-directed work style with the ability to operate independently.
  • Analytical thinker with proven problem-solving capabilities.
  • Highly organized, with the ability to balance competing priorities in a fast-paced environment.

ASEC is committed to providing access and reasonable accommodation in its services, activities, programs, and employment opportunities in accordance with the Americans with Disabilities Act and other applicable laws.


Security Clearance Requirement:

  • This position requires U.S. citizenship and an active DoD Top Secret clearance. Selected candidate will be subject to a government security investigation and must meet eligibility requirements for access to classified information.

Salary Range:

  • The anticipated annual salary range for this position is $90,000 - $105,000 annually, commensurate with an individual's experience, qualifications, and skill set. ASEC is committed to providing fair and equitable compensation. The low end of this salary range is accounting for a candidate that meets or exceeds all of the listed requirements.  

Who We Are:


ASEC offers meaningful, mission-driven work within a culture that supports your professional and personal growth. We partner with our government customers to deliver innovative solutions across engineering, information technology, training, and logistics. Above all, we are committed to doing what's right for the Warfighter-plain and simple. Explore what makes ASEC different by visiting our website.


Why work at ASEC?

  • 100% employee-owned company. Learn more about our Employee Stock Ownership Plan (ESOP) here!
  • Comprehensive benefits package, including 11 paid holidays, medical/dental/vision coverage, HSA/FSA options, disability insurance, and more!
  • 401(k) with company match
  • Tuition assistance for undergraduate and graduate education
  • Veteran-friendly employer
  • Thriving employee culture

Not the right opportunity for you? Send this job posting to a friend!


ASEC is an Equal Opportunity Employer. We recruit, hire, train, compensate, and promote employees based on qualifications, merit, and business needs, without regard to race, color, religion, sex, national origin, ancestry, age, marital status, sexual orientation, gender identity or expression, disability, veteran status, genetic information, pregnancy or related conditions (including breastfeeding), or any other status protected by law.

ASEC also complies with all applicable pay transparency laws and will not discriminate against employees or applicants for inquiring about, discussing, or disclosing compensation.