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Senior System Administrator Jobs in Riverside, CA

Penhall

Senior System Administrator

Anaheim, CA · On-site

$90K - $122K/yr

Position Description The Senior Systems Administrator will serve as a critical member of Penhall's IT team, responsible for maintaining and enhancing the company's IT infrastructure, both on-premises ...

Cystems Logic

Senior Systems Administrator

Irvine, CA · On-site

$92K - $125K/yr

Senior Systems Administrator Location: Irvine, CA - Onsite *Duration: 12+ Months * The Senior Systems Administrator is a senior technical role focused on the successful execution of complex data ...

TecTammina

Senior Systems Administrator

Irvine, CA

$92K - $125K/yr

Automation of tools for monitoring, process and documentation System security techniques and best practices Qualifications Support of 3-tiered 24/7/365 high-availability website and application ...

Cystems Logic

Senior Web Administrator

Irvine, CA · On-site

$92K - $125K/yr

Senior Web Administrator Location: Irving, CA (onsite) Position Summary: We are seeking a Senior ... system, and network-related issues. Experience with enterprise load balancers such as F5 BIG-IP ...

Boot Barn

Linux Administrator

Irvine, CA

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

LINUX ADMINISTRATOR REPORTS TO: SR. SYSTEMS ADMINISTRATOR STATUS: EXEMPT Summary Boot Barn is where community comes first. We thrive on togetherness, collaboration, and belonging. We build each other ...

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All JobsSystem Administrator JobsSenior System Administrator JobsSenior System Administrator Jobs in Riverside, CA

Senior System Administrator information

See Riverside, CA salary details

$51.1K

$106.7K

$149.7K

How much do senior system administrator jobs pay per year?

As of Aug 14, 2026, the average yearly pay for senior system administrator in Riverside, CA is $106,653.00, according to ZipRecruiter salary data. Most workers in this role earn between $89,700.00 and $121,500.00 per year, depending on experience, location, and employer.

What are some common challenges a senior system administrator may encounter when managing hybrid cloud environments?

Senior System Administrators often face challenges balancing on-premises infrastructure with cloud-based resources, which can include ensuring consistent security policies, managing data synchronization, and monitoring system performance across multiple platforms. They must also stay updated on evolving technologies and compliance requirements, as well as collaborate closely with development, security, and networking teams. Addressing these complexities requires strong problem-solving skills, robust documentation practices, and a proactive approach to both troubleshooting and automation.

What does a senior system administrator do?

A Senior System Administrator is responsible for managing, maintaining, and securing an organization's IT infrastructure, including servers, networks, and related systems. They oversee the installation and configuration of hardware and software, troubleshoot complex technical issues, and ensure the reliability and performance of IT services. Senior System Administrators also implement security policies, perform regular system updates, and may supervise junior IT staff. Their expertise is essential for minimizing system downtime and protecting data integrity.

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

To thrive as a Senior System Administrator, you need in-depth knowledge of operating systems, networking, security protocols, and significant experience managing IT infrastructure, usually backed by a degree in computer science or related certifications (such as CompTIA, Microsoft, or Cisco). Expertise with tools like VMware, Active Directory, PowerShell, and cloud platforms (AWS, Azure) is typically required. Strong problem-solving skills, attention to detail, and effective communication are crucial soft skills for this role. These abilities ensure reliable system performance, minimize downtime, and support the technology needs of an organization.

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

AspectSenior System AdministratorNetwork Administrator
CertificationsCompTIA Server+, Microsoft Certified: Windows Server, Cisco CCNACompTIA Network+, Cisco CCNA, Cisco CCNP
Work EnvironmentData centers, enterprise IT environments, server managementNetwork infrastructure, routing, switching, network security
ResponsibilitiesServer deployment, maintenance, troubleshooting, system upgradesNetwork setup, monitoring, troubleshooting, security management

While both roles require networking and system knowledge, Senior System Administrators focus on server and system management, whereas Network Administrators specialize in network infrastructure. Both roles are essential in enterprise IT, often collaborating to ensure seamless technology operations.

What are the most commonly searched types of System Administrator jobs in Riverside, CA?

The most popular types of System Administrator jobs in Riverside, CA are:

What cities near Riverside, CA are hiring for Senior System Administrator jobs?

Cities near Riverside, CA with the most Senior System Administrator job openings:

Senior System Administrator jobs near you
Infographic showing various Senior System Administrator job openings in Riverside, CA as of August 2026, with employment types broken down into 1% As Needed, 82% Full Time, 13% Part Time, and 4% Contract. Highlights an 91% Physical, 2% Hybrid, and 7% Remote job distribution, with an average salary of $106,653 per year, or $51.3 per hour.

Senior System Administrator

Penhall

Anaheim, CA • On-site

$90K - $122K/yr

Full-time

Posted 25 days ago

Penhall Company rating

7.5

Company rating: 7.5 out of 10

Based on 11 frontline employees who took The Breakroom Quiz

Job description

Position Description
The Senior Systems Administrator will serve as a critical member of Penhall's IT team, responsible for maintaining and enhancing the company's IT infrastructure, both on-premises and in the cloud. This role will focus on ensuring high system availability, top-tier support, and adherence to IT best practices while delivering efficient and scalable solutions. The position requires expertise in system administration, cybersecurity, and process automation, with the ability to manage multiple priorities in a fast-paced environment.
Duties and Responsibilities:
  • Manage and administer on-premises and cloud-based IT infrastructure, including networking, servers, Active Directory, Azure, Microsoft 365, Track IT, and cybersecurity programs.
  • Serve as the highest escalation point for IT-related challenges, engaging with vendors and troubleshooting complex issues.
  • Design, implement, and optimize systems maintenance plans, including system performance monitoring, patching, and disaster recovery testing, with a focus on automation and improvement opportunities.
  • Champion cybersecurity best practices, including multi-factor authentication (MFA), least-privilege access, conditional access, and secure system configurations.
  • Lead efforts to replace or upgrade existing systems and align IT infrastructure with business goals.
  • Maintain and document IT processes, policies, and systems configurations (e.g., network diagrams, patch management, disaster recovery, security measures).
  • Configure and manage firewalls, switches, wireless access points, VPNs, and other networking devices.
  • Monitor, analyze, and act on system and security alerts, including those from Proofpoint and CrowdStrike platforms.
  • Deploy and manage backup and recovery solutions, ensuring data integrity and business continuity.
  • Create, maintain, and optimize PowerShell scripts and other automation tools to streamline repetitive IT tasks.
  • Conduct regular network audits and implement corrective measures as needed.
  • Manage and implement endpoint configuration tools, such as Automox, to ensure systems are secure and compliant.
  • Provide exceptional customer support to internal stakeholders and assist in resolving IT-related issues in a timely manner.
  • Author and maintain technical documentation using tools such as Microsoft Visio, Word, and PowerPoint.
  • Stay informed of emerging IT trends and technologies and recommend relevant solutions for Penhall's needs.
  • Provide training, guidance, and mentorship to junior team members and support staff.
  • Perform other related duties as assigned by the manager.

Position Requirements
Required Skills and Abilities:
  • Proficiency in Microsoft 365 ecosystem, including Exchange Online, Teams, SharePoint, and OneDrive.
  • In-depth knowledge of Azure AD, including SSO, conditional access, synchronization methods, and group policy management.
  • Expertise in cybersecurity measures, including endpoint protection, encryption, intrusion detection, and secure configurations.
  • Strong experience with cloud platforms, particularly Azure, and performing premise-to-cloud migrations.
  • Advanced skills in PowerShell scripting and other automation tools.
  • Proficiency in managing virtualization platforms such as VMware or Azure.
  • Networking expertise, including DHCP, DNS, VLANs, and troubleshooting using packet capture tools.
  • Familiarity with enterprise backup solutions like Veeam and storage systems, including SAN and iSCSI technologies.
  • Strong written and verbal communication skills, with the ability to convey technical information to non-technical stakeholders.

Essential Core Competencies:
  • Problem Solving: Ability to efficiently diagnose and resolve technical issues.
  • Critical Thinking: Anticipates potential IT challenges and develops proactive solutions.
  • Attention to Detail: Ensures accuracy in configurations, updates, and documentation.
  • Communication Skills: Clearly explains technical concepts to stakeholders and creates comprehensive documentation.
  • Team Collaboration: Works effectively with IT, development, and operations teams to achieve infrastructure goals.
  • Customer Service Orientation: Delivers timely and effective support to end-users and stakeholders.
  • Adaptability: Responds to evolving technologies and organizational priorities with flexibility.

Education and Experience:
  • Bachelor's degree in Computer Information Systems or a related field, or equivalent experience and certifications.
  • Minimum of 5+ years of systems administration experience in an enterprise environment.
  • Certifications such as Microsoft 365 or MCSE are preferred.

Physical Requirements:
  • Prolonged periods of sitting at a desk and working on a computer.
  • Must be able to lift up to 15 pounds at times.
  • Ability to walk job sites when necessary.
  • May be required to travel to job sites and other locations.

Equal Opportunity Employer
Legal Disclaimer:
Reasonable accommodations may be made to enable individuals with disabilities to perform the essential
functions of the job.
Penhall Company is an Equal Opportunity Employer and does not discriminate against any employee or applicant for employment because of race, color, sex, age, national origin, religion, sexual orientation, compensation inquiries, discussions or disclosures, gender identity and/or expression, status as a veteran, and basis of disability or any other federal, state or local protected class. (41 CFR §§ 60-1.4(a), 60-300.5(a) and 60-741.5(a))
This job description is intended to describe the general nature and level of work being performed by employees in this position. It is not intended to be an exhaustive list of all duties, responsibilities, or qualifications required. Penhall Company reserves the right to modify, add, or remove duties and to assign other responsibilities as necessary.
AI-Assisted Hiring and Automated Decision Tool Disclosure
The Company may use Artificial Intelligence ("AI"), machine learning technologies, and/or automated decision-making tools to assist in certain aspects of the recruitment and hiring process, including reviewing applications, resumes, assessments, and candidate qualifications. These tools are used to support the evaluation process and are not used as the sole basis for employment decisions.
All employment decisions are ultimately made by qualified Company representatives. The Company maintains human oversight of hiring decisions and does not permit automated systems to make final employment determinations independently.
The Company is committed to equal employment opportunity and to complying with all applicable federal, state, and local employment, privacy, and anti-discrimination laws. The Company does not intentionally use AI systems in a manner that unlawfully discriminates against applicants or employees based on any protected characteristic under applicable law.
Applicants may request reasonable accommodations, alternative evaluation methods, or additional information regarding the Company's use of automated tools by contacting Human Resources.
Where required by applicable law, the Company may provide additional notices regarding the use of automated decision-making tools, data practices, retention periods, or bias audit information.

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