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Senior Unix System Administrator Jobs in California

Sr. System Administrator

San Diego, CA · On-site

$91K - $123K/yr

About the role Concept Plus is seeking a Senior System Administrator to act as on-site support for a client system What you'll do Network Troubleshooting & Support * Basic understanding of Layer 1, ...

As a Senior IT System Administrator, you will be responsible for the management, support, and enhancement of the IT infrastructure, IT service delivery, and end-user IT experience. This role ensures ...

Overview Delta Solutions and Services Bowhead is seeking a Senior Network/ System Administrator for our team at Vandenberg SFB. The Network / System Administrator is responsible for the configuration ...

System Administrator

Los Angeles, CA · Hybrid

$60 - $70/hr

Cosm is looking for a Senior Systems Administrator to keep our creative infrastructure running -- render farms, remote VFX/post workstations, and large-scale media asset management and archival ...

Showing results 41-60

Senior Unix System Administrator information

See California salary details

$48.4K

$100.9K

$141.6K

How much do senior unix system administrator jobs pay per year?

As of Aug 22, 2026, the average yearly pay for senior unix system administrator in California is $100,891.00, according to ZipRecruiter salary data. Most workers in this role earn between $84,900.00 and $115,000.00 per year, depending on experience, location, and employer.

What is a senior Unix system administrator?

Senior Unix System Administrators are experienced IT professionals who manage, maintain, and troubleshoot Unix or Linux-based server systems within an organization. They are responsible for ensuring system reliability, security, and performance by configuring servers, applying updates, monitoring system health, and responding to incidents. In addition to technical duties, they may also mentor junior admins, design system architecture, and implement automation tools to streamline operations. Their expertise is essential for organizations that rely on Unix or Linux servers for critical applications and data management.

What are the key skills and qualifications needed to thrive as a senior Unix system administrator?

To thrive as a Senior Unix System Administrator, you need deep expertise in Unix/Linux operating systems, scripting languages (such as Bash, Python, or Perl), and a strong understanding of networking and security principles, usually backed by relevant certifications or degrees. Familiarity with configuration management tools (like Ansible or Puppet), virtualization platforms, and monitoring systems is typically required. Strong problem-solving, communication, and leadership skills help you manage complex issues and mentor junior staff. These skills and qualities are crucial for maintaining system reliability, optimizing performance, and ensuring secure, efficient IT operations.

What are some common challenges senior Unix system administrators face when managing large-scale, multi-user environments?

Senior Unix System Administrators often deal with challenges such as maintaining system uptime across multiple servers, ensuring security compliance, and managing complex patching schedules in environments with numerous users. Balancing proactive monitoring with rapid incident response is crucial, as is collaborating with developers, network engineers, and support staff to troubleshoot issues efficiently. Additionally, adapting to evolving technologies and automating repetitive tasks are key to maintaining system performance and reliability.

What is the difference between Senior Unix System Administrator vs Linux Systems Engineer?

AspectSenior Unix System AdministratorLinux Systems Engineer
CertificationsUnix/Linux certifications (e.g., LPIC, RHCE)Linux certifications (e.g., RHCE, CompTIA Linux+)
Work EnvironmentUnix servers, enterprise data centersLinux servers, cloud environments
Industry UsageFinancial, telecom, large enterprisesTech companies, startups, cloud providers
Job FocusSystem maintenance, troubleshooting, scriptingDeployment, automation, infrastructure design

Both roles require Linux/Unix knowledge and certifications, but Senior Unix System Administrators focus more on maintaining enterprise Unix systems, while Linux Systems Engineers often work on deploying and automating Linux environments, especially in cloud and development settings.

What cities in California are hiring for Senior Unix System Administrator jobs?

Cities in California with the most Senior Unix System Administrator job openings:

Infographic showing various Senior Unix System Administrator 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, with an average salary of $100,891 per year, or $48.5 per hour.

$95K - $120K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 18 days ago


Job description

Position Title:  System Administrator

Reports to: Senior Infrastructure Manager

Department: Information Technology

Classification: Full-time, Exempt

Pay: $95,000–$120,000 annually

Stanislaus Mission

To attract quality-oriented restaurateurs with consistently superior tomatoes and olive oil, keep them through legendary service, and invest in talented people who share our dedication to customer success.

The Company

Stanislaus Food Products is a nationally recognized, family-owned company known for crafting the finest Italian-style tomatoes and sauces for top-quality Italian restaurants and pizzerias.

If you take pride in the quality of your work and prefer working on a team of talented individuals who share your passion for excellence, we invite you to apply for this exciting opportunity! This is a full-time position located on-site at our Modesto administrative office.

The System Administrator provides support for system administration and network components inclusive of server configurations, emergency restoration services, backups, and maintenance. This role will be expected to support our Tomato Season by working up to 6 days a week from mid July until late October. 

This position will be primarily responsible for:

  • Manage, monitor and maintain VMware, Windows, and Linux server environments ensuring a secure and high availability environment. To include provisioning and decommissioning servers as required.
  • Administer on-premises and Azure Active Directory. Including adding and removing users, groups, printers and managing user permissions as required.
  • Manage daily operations of core infrastructure and platforms including, but not limited to, servers, video, data, and voice servers.
  • Implement and maintain infrastructure backup, and redundancy strategies.
  • Administration of Office 365 Platform including SharePoint and Microsoft Teams sites.
  • Manage the company’s mobile device environment (InTune, Jamf, ManageEngine).
  • Respond to complex, escalated incidents and requests until they are resolved.
  • Create and maintain documentation for the infrastructure environment.
  • Manage third party vendors as required to ensure smooth and efficient project implementations.
  • Manage software and hardware licensing contracts.
  • Participate in and lead IT projects, and where applicable, ensure these are delivered within scope, budget, and adhere to company governance processes.
  • Proactively research new and more efficient technology and vendors in the pursuit of stability and support for business processes.
  • Where applicable, mentor the IT support staff and provide guidance and hands-on training.  Promoting excellent customer service, high quality of work, and efficient problem-solving standards.
  • Other duties as assigned.

    Candidate Requirements:

    • Minimum of 4 years of experience as a Systems Administrator, Network Administrator, or similar role.
    • Advanced knowledge of networking and distributed computing environment concepts.
    • Experience with Windows Server management including DNS, File Servers, Print Management, Group Policy.
    • Sound understanding of the principles of routing, firewalls, and client/server applications.
    • Solid experience with Physical and Virtual Servers (VMware), Operating system to include Windows and Linux.
    • Proven administration experience of Microsoft Products including Active Directory both on-premises and Azure AD, MFA, and Microsoft Intune.
    • Strong organization skills to balance multiple projects simultaneously.
    • Ability to work within a team and provide leadership in the design, deployment, and support of infrastructure systems.
    • Manage daily operations of core infrastructure.
    • Administer on-premises and Azure Active Directory, as well as ERP systems, including adding and removing users, groups, printers, and managing user permissions as required.

    Candidate Preferences:

    • Knowledge of Scripting and Automation.
    • Proficient in creating and updating process procedures.
    • May provide leadership, coaching, and/or mentoring to a subordinate group.
    • Bachelor’s Degree and 4 years of experience in a related field.
    • Experience with Infrastructure as a service (IaaS).

    Other Requirements: 

    Requires working six days a week during our harvest season, which usually lasts about 10 weeks from July to September. During this time, shift schedules may vary. 

    Physical Requirements:

    Some lifting, carrying, pushing, and/or pulling; some stooping, kneeling, crouching, and/or crawling; and frequent fine finger dexterity. Generally, the job requires the following percentages of time committed to physical activity: 50% or more sitting, 25% or less walking, and 25% or more standing. The job is performed under occasional temperature variations and primarily in an office environment. Unrestricted visual and audio abilities are required for the safety of all employees. The ability to lift to 50 lbs. is required. 

    Wellbeing:

    In addition to our solid track record as a stable, growing employer, we offer a variety of different benefits depending on your role:

    • Physical Wellness – Medical plan options, Dental and Vision benefits, Sick Time, and Gym/Wellness Class Reimbursement.
    • Social Wellness – Paid Time Off, Company Holidays, Engagement Events throughout the year, and Federal and State Leave of Absences.
    • Development Wellness – Recognition, Best in Class Training Programs, Succession Planning, and Tuition Reimbursement.
    • Emotional Wellness – Employee Assistance Program, People Operations Department with an Open Door Policy. 
    • Financial Wellness – Competitive Salary, Performance Based Bonus, 401k Program, Accident Insurance, and Life Insurance.
    • Nutrition Wellness – Access to best-in-class tomato sauce and olive oil products.