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Operating System Engineer Jobs in Fontana, CA (NOW HIRING)

SBCERA

Enterprise Systems Engineer

San Bernardino, CA · On-site

$88K - $131K/yr

Design, implement, and manage enterprise operating system environments, including, but not limited ... Azure Security Engineer Associate, Microsoft 365 Certified Fundamentals, Microsoft 365 Certified:

Esri

C/C++ Software Development Engineer II

Redlands, CA · On-site

$101K - $167K/yr

In this role, you will apply your expertise in C/C++, operating systems, security, debugging, and ... Work alongside senior engineers to design and implement innovative features * Stay informed about ...

PacSun

Systems Engineer

Anaheim, CA · On-site

$84K - $102K/yr

The Systems Engineer will assist in the design, implementation, administration, and troubleshooting ... In-depth knowledge of Microsoft server operating systems in an Active Directory environment, with a ...

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All JobsOperating System Engineer JobsOperating System Engineer Jobs in Fontana, CA

Operating System Engineer information

See Fontana, CA salary details

$54.4K

$129.3K

$169.8K

How much do operating system engineer jobs pay per year?

As of Jul 26, 2026, the average yearly pay for operating system engineer in Fontana, CA is $129,332.00, according to ZipRecruiter salary data. Most workers in this role earn between $99,600.00 and $159,600.00 per year, depending on experience, location, and employer.

What are some common challenges faced by Operating System Engineers when maintaining system stability in large-scale environments?

Operating System Engineers often encounter challenges such as managing software patching across diverse hardware, ensuring compatibility with legacy applications, and minimizing downtime during critical updates. In large-scale environments, balancing security with performance and reliability can be complex, especially when multiple teams depend on the systems. Effective communication with development, security, and IT operations teams is essential to address these issues proactively and maintain overall system stability.

What engineers make 200,000 a year?

Operating System Engineers with extensive experience, specialized skills, and certifications can earn $200,000 or more annually, especially in high-demand industries or senior roles. Factors such as working in large tech companies, possessing expertise in systems architecture, and working in competitive markets contribute to higher salaries.

What does an Operating System Engineer do?

An Operating System Engineer is responsible for designing, developing, maintaining, and optimizing operating systems that run on computers and servers. They work on the core components that manage hardware resources, enable software applications, and ensure system security and stability. Their duties often include writing system-level code, troubleshooting performance issues, implementing updates, and collaborating with hardware and software teams. Operating System Engineers play a critical role in ensuring that computing environments are efficient, reliable, and secure.

What engineers make $300,000 a year?

Senior operating system engineers, especially those with extensive experience, specialized skills, and certifications, can earn $300,000 or more annually. High compensation is often associated with roles in large tech companies, leadership positions, or engineers working on complex systems with advanced tools and technologies.

What is the difference between Operating System Engineer vs System Administrator?

AspectOperating System EngineerSystem Administrator
Primary FocusDesigning, developing, and optimizing operating systemsMaintaining, configuring, and supporting existing systems
Skills & CertificationsLinux/Unix, scripting, OS architecture, certifications like RHCE or Linux FoundationSystem management, network setup, troubleshooting, certifications like CompTIA Server+ or Microsoft Certified
Work EnvironmentDevelopment teams, R&D, engineering projectsIT support, data centers, enterprise environments
Industry UsageTech companies, hardware firms, software developmentCorporate IT, government agencies, healthcare, finance

While both roles involve working with operating systems, Operating System Engineers focus on designing and developing OS solutions, whereas System Administrators manage and support existing systems. The roles complement each other but serve different stages of the system lifecycle.

What does an OS engineer do?

An Operating System (OS) Engineer designs, develops, and maintains operating systems or their components, ensuring efficient performance, security, and stability. They often work with low-level programming languages, troubleshoot system issues, and optimize hardware-software interactions, frequently using tools like debugging software and version control systems.

What engineer makes $500,000 a year?

An Operating System Engineer or similar senior-level software engineer can earn $500,000 or more annually, especially with extensive experience, specialized skills, and working in high-paying industries or companies. Such roles often require advanced knowledge of system architecture, programming, and certifications, and may include bonuses and stock options that contribute to total compensation.

What are the key skills and qualifications needed to thrive as an Operating System Engineer, and why are they important?

To thrive as an Operating System Engineer, you need a deep understanding of computer science principles, operating system internals, and strong programming skills in languages like C, C++, or Rust, often backed by a relevant degree. Familiarity with kernel development, debugging tools, virtualization platforms, and experience with version control systems (such as Git) are typically required. Problem-solving abilities, attention to detail, and effective communication are soft skills that set top performers apart. These skills ensure the reliability, performance, and security of operating systems, which are foundational to all computing environments.
What are popular job titles related to Operating System Engineer jobs in Fontana, CA? For Operating System Engineer jobs in Fontana, CA, the most frequently searched job titles are:
What cities near Fontana, CA are hiring for Operating System Engineer jobs? Cities near Fontana, CA with the most Operating System Engineer job openings:
Operating System Engineer jobs near you
Infographic showing various Operating System Engineer job openings in Fontana, CA as of June 2026, with employment types broken down into 96% Full Time, 2% Contract, and 2% Nights. Highlights an 96% Physical, 1% Hybrid, and 3% Remote job distribution, with an average salary of $129,332 per year, or $62.2 per hour.
System Engineer- Cyber Security Engineering Focus

System Engineer- Cyber Security Engineering Focus

Esri

Redlands, CA

$57.50 - $70.75/hr

Other

Posted 26 days ago

Esri rating

9.6

Company rating: 9.6 out of 10

Based on 14 frontline employees who took The Breakroom Quiz

8th of 245 rated software companies

Job description

Overview

This position plays a hands-on role securing systems that support critical Defense and Intelligence missions. This position is focused on applying risk management frameworks, engineering security controls, and maintaining system authorizations for cloud and on-prem environments. 

You'll work closely with other system engineers, administrators, and program teams to ensure systems are built, assessed, and operated in compliance with DoD and NIST requirements. From managing RMF and ATO packages to driving vulnerability remediation and system hardening, this role is central to maintaining secure, mission-ready systems throughout their lifecycle. 

Esri has a Relocation Assistance Program and can provide support with relocating to the Redlands, CA area for this position. 

Responsibilities

  • Apply RMF processes to support system Assessment & Authorization (A&A), including control selection, implementation, assessment, and continuous monitoring
  • Develop, review, and maintain security documentation such as SSPs, POA&Ms, SARs, and ATO artifacts in tools such as XACTA or eMASS
  • Conduct vulnerability assessments and compliance scans (such as ACAS) and track remediation of findings and IAVM requirements
  • Implement and validate security controls aligned with NIST 800-53, CNSSI 1253, and related DoD guidance
  • Support system hardening, patching, and configuration management in compliance with STIGs for Linux, Windows, and network devices
  • Monitor systems for security events and supporting incident response and risk mitigation activities
  • Assess security impacts of system changes and supporting configuration control boards (CCBs)
  • Collaborate with system engineers, administrators, and DevSecOps teams to integrate security throughout the system lifecycle
  • Provide cybersecurity risk input to program leadership, Authorizing Officials (AOs), and stakeholders

Requirements

  • 8+ years of professional experience in a similar position, supporting similar responsibilities
  • Professional experience with RMF, A&A, POA&M, and ATO documentation (XACTA/eMASS)
  • Hands-on experience with vulnerability scanning and compliance tracking (ACAS, IAVM)
  • Experience securing Linux and Windows systems, STIGs, patching, and system hardening
  • Knowledge of NIST 800-series publications and incident response processes
  • DoD 8570 IAT Level II or higher certification (such as Security +, CySA +, CISSP)
  • Strong analytical, communication, and collaborative skills
  • US citizenship with Active or Current (within 2 years of active) Top Secret Security Clearance with SCI eligibility
  • Bachelor's degree in Computer Science, Cybersecurity, Information Technology or STEM related field

Recommended Qualifications

  • Scripting or development experience (Python, Java, React)
  • DevSecOps tools and pipeline experience
  • Experience with Linux (Red Hat/CentOS), databases, web apps, or big data platforms
  • Familiarity with Agile environments and tools (Jira, Confluence)
  • Experience with NIST SP 800-171 and System Security Engineering (SSE)
  • Master's degree in Computer Science, Cybersecurity, Information Technology or STEM related field

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What Esri employees say

Pay

Benefits

Hours and flexibility

Workplace

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About ESRI

Sourced by ZipRecruiter

Our passion for improving quality of life through geography is at the heart of everything we do. Esri's geographic information system (GIS) technology inspires and enables governments, universities, and businesses worldwide to save money, lives, and our environment through a deeper understanding of the changing world around them.

Industry

Scientific research and development services

Company size

1,001 - 5,000 Employees

Headquarters location

Redlands, CA, US

Year founded

1969

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