Operating System Engineer Jobs in California (NOW HIRING)

Axiado is building the future of AIpowered digital infrastructure. We are a fastgrowing, wellfunded silicon, systems, and solutions company pioneering a new category of semiconductor called the Trusted Control/Compute Unit (TCU) that combines advanced hardware security, AIdriven resilience and efficiency, and realtime platform management. Our technology protects the world’s most critical infrastructure—from data centers to nextgeneration cloud and AI platforms—by securing systems at the foundation levels of hardware, independent of host CPUs and operating systems. 

Founded in 2019 and now over 150 employees strong, Axiado has evolved into a recognized leader in the convergence of AI, security, and silicon innovation. We partner with and are actively engaged in commercial programs with multiple Tier 1 industry leaders, validating both our technology and our long-term market trajectory. Axiado has also won numerous industry awards for our ground-breaking products and technological innovations, including being named one of Fast Company’s 2025 Top 10 Most Innovative Companies in Security, winning the 2025 Global InfoSec Award for Outstanding AI Security Solution, and being named a finalist for the Global Semiconductor Alliance’s 2025 “Start-Up to Watch” award. 

At Axiado, developing breakthrough technology takes more than great engineering—it takes a team of exceptional people who collaborate boldly, challenge assumptions, and take pride in building what comes next. We value curiosity, execution, respect, and a shared desire to make a meaningful impact on the security and reliability of the digital world. 

If you’re driven to innovate, energized by hard problems, and excited to help define the future of secure AI infrastructure, we invite you to apply and join us on this journey. 

We are looking for System Engineer (PIT) specialized in AI Server Bring-up to drive the integration of our Secure AI™ engine into high-performance computing environments. You will leverage deep expertise in Linux kernel internals and low-level communication protocols (MCTP, eSPI, LTPI) to build robust, secure, and reliable server management solutions for global customers.

Key Responsibilities:

1. Implement firmware features that enable communication with peripherals via SPI, I2C, SGPIO, LTPI, PCIe, and other relevant protocols, following chipset specifications and datasheets.

2. Collaborate closely with customers to provide technical guidance, ensuring they understand and resolve platform integration challenges effectively. Offer both strategic and day-to-day technical support for assigned accounts.

3. Troubleshoot complex technical issues in diverse customer environments, applying broad concepts and innovative problem-solving to deliver effective solutions.

4. Ensure security compliance, including secure boot mechanisms and platform root of trust, maintaining robust security across the system.

5. Integrate Secure AI™ engine solutions into customer platforms, supporting

NVIDIA, Intel, and AMD-based systems to enhance AI-driven functionality.

6. Develop and maintain BMC software for system monitoring, event logging, WebUI, and other essential platform functionalities.

1. 10+ years of experience in firmware engineering, specializing in embedded systems and platform integration.

2. Proficient in C, C++, assembly language, shell scripting, and Python for firmware development.

3. Deep understanding of Linux operating system internals, including kernel architecture, applications, and IPC.

4. Strong expertise in low-level protocols, including I2C, I3C, GPIO, USB, LTPI, SGPIO, UART, and MCTP, eSPI, SSIF.

5. Strong capability in BMC porting, with the ability to independently adapt BMC solutions to custom hardware and proprietary algorithms.

6. Experience working with embedded systems, microcontrollers, FPGAs, and ARM-based architectures.

7. Comprehensive knowledge of firmware architecture, including bare-metal programming and security implementations.

Preferred Skills:

1. Extensive experience in end-to-end server bring-up and the architectural development of high-performance AI server platforms.

2. Experience working with OpenBMC stack, including customization and integration for various platforms.

Compensation Range - $80,000 - $200000

Axiado is committed to attracting, developing, and retaining the highest caliber talent in a diverse and multifaceted environment. We are headquartered in the heart of Silicon Valley, with access to the world's leading research, technology and talent.

We are building an exceptional team to secure every node on the internet. For us, solving real-world problems takes precedence over purely theoretical problems. As a result, we prefer individuals with persistence, intelligence and high curiosity over pedigree alone. Working hard and smart, continuous learning and mutual support are all part of who we are.

Axiado is an Equal Opportunity Employer. Axiado does not discriminate on the basis of race, religion, color, sex, gender identity, sexual orientation, age, non-disqualifying physical or mental disability, national origin, veteran status or any other basis covered by appropriate law. All employment is decided on the basis of qualifications, merit, and business need.