Operating Systems Engineer, Linux Kernel | Consumer Devices

Operating Systems Engineer · Senior · Full Time

San FranciscoUSD 230k – 385k1mo ago
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Role

What you'll do.

OpenAI Consumer Devices is seeking an Operating Systems Engineer to design and maintain Linux kernel capabilities for next-generation consumer AI devices. This role combines deep kernel expertise with full-stack ownership, requiring proficiency in C, kernel subsystems (memory management, storage, networking, power management), and userspace integration. You'll debug complex system behavior, contribute upstream-compatible kernel changes, and collaborate with hardware and firmware engineers to ship reliable products at the intersection of hardware, software, and AI.

Responsibilities

  • Linux Kernel Development: Design, implement, and maintain Linux kernel subsystem changes that support device capabilities and product requirements. This includes working with memory management, storage I/O, networking stacks, high-speed peripherals, power management, scheduling, or virtualization subsystems to deliver core platform functionality.
  • Full-Stack Feature Ownership: Make architectural decisions about kernel and userspace boundaries to deliver complete product features. Build interfaces, supporting libraries, and tools needed to turn system requirements into reliable, shipped products while maintaining clean separation of concerns across the stack.
  • System Debugging and Diagnostics: Use advanced tracing, profiling, instrumentation, and diagnostic tools to resolve correctness, concurrency, performance, power consumption, and reliability issues in both development and production environments. Investigate root causes of complex system behavior spanning hardware, kernel, and userspace.
  • Performance Validation and Testing: Develop comprehensive tests and representative workloads that demonstrate measurable performance, power efficiency, and reliability improvements. Establish baselines, detect regressions across kernel and userspace components, and validate optimization effectiveness through rigorous testing methodologies.
  • Cross-Disciplinary Collaboration: Partner with hardware engineers, firmware developers, platform engineers, and application teams to translate high-level system requirements into maintainable kernel solutions. Communicate technical tradeoffs clearly and work constructively through design reviews and code feedback.
  • Upstream Kernel Contributions: Prepare high-quality, reviewable patches that follow Linux kernel development best practices. Incorporate community feedback, contribute fixes and improvements to upstream Linux repositories where appropriate, and maintain product-specific kernel changes responsibly as the broader kernel evolves.

Qualifications

What we look for.

Technical

  • Linux Kernel Subsystem Expertise

    Substantial hands-on experience designing, developing, and debugging one or more major Linux kernel subsystems such as memory management (page caches, VM subsystem), storage (filesystem interfaces, block layer), networking (protocol stacks, drivers), high-speed peripherals (DMA, interrupts), power management (CPU states, device suspend/resume), scheduling (load balancing, real-time), or virtualization (KVM, device pass-through).

  • C Programming for Systems Development

    Deep proficiency in C for both kernel-space and low-level systems development. Must understand kernel coding patterns, memory safety considerations, pointer manipulation, and C build toolchain fundamentals required for Linux kernel development.

  • Kernel Concurrency and Synchronization

    Strong understanding of kernel concurrency primitives including spinlocks, mutexes, semaphores, RCU (Read-Copy-Update), and atomic operations. Deep knowledge of memory ownership models, resource lifetimes, and prevention of data races and deadlocks in concurrent code.

  • Kernel-Userspace Integration

    Proven experience delivering systems capabilities that span kernel and userspace, including designing system call interfaces, ioctl handlers, netlink protocols, and character/block device drivers. Ability to diagnose and resolve issues that cross the kernel boundary through systematic debugging techniques.

  • Linux Kernel Development Practices

    Thorough understanding of Linux kernel development principles including maintainable design patterns, appropriate architectural abstractions, patch review processes, backward compatibility awareness, and regression prevention strategies. Familiarity with kernel documentation, source code organization, and long-term maintenance considerations.

  • Embedded Systems Development

    Experience developing software for embedded devices and consumer hardware platforms. Understanding of device constraints including power budgets, memory limitations, thermal management, and hardware-specific optimizations for performance and efficiency.

Education

  • Bachelor's Degree in Computer Science or Engineering

    Formal degree in Computer Science, Computer Engineering, Electrical Engineering, or related field preferred, or equivalent practical experience demonstrating deep systems knowledge.

  • Systems Programming Background

    Demonstrated academic or professional background in operating systems, computer architecture, embedded systems, or systems software development that shows foundational understanding of kernel concepts and low-level programming.

Experience

  • 5+ Years Linux Kernel Development

    Minimum five years of professional or substantial open-source experience developing, debugging, and optimizing Linux kernel code. This includes shipping kernel changes in production systems and handling long-term maintenance of kernel modifications.

  • Hardware and Firmware Integration

    Direct experience working with embedded hardware platforms, device drivers, bootloaders, and firmware integration. Understanding of how kernel decisions impact hardware constraints and vice versa.

  • Production Systems at Scale

    Track record of taking ownership of complete technical solutions from design through production deployment. Experience supporting systems in production, triaging issues, and delivering reliable customer-facing features.

Skills

Required

  • C Programming

    Expert-level C proficiency for kernel and systems-level development, including deep understanding of memory models, pointer arithmetic, inline assembly, and kernel build systems.

  • Linux Kernel Architecture

    Comprehensive knowledge of Linux kernel architecture including process management, virtual memory systems, interrupt handling, and internal data structures. Ability to navigate and understand complex kernel source code.

  • System Debugging Tools

    Proficiency with kernel debugging and profiling tools including GDB, perf, strace, ftrace, systemtap, and kprobes. Ability to analyze kernel logs, trace system behavior, and identify performance bottlenecks.

  • Git and Version Control

    Expert use of Git for managing kernel patches, understanding of distributed development workflows, cherry-picking, rebasing, and patch management in the Linux kernel development model.

  • Makefile and Build Systems

    Understanding of Linux kernel build system (Kbuild), cross-compilation, kernel configuration (Kconfig), and ability to compile custom kernels with targeted subsystems and debugging symbols.

  • Device Driver Development

    Experience developing Linux device drivers including character devices, block devices, or network drivers. Understanding of driver architecture, interrupt handling, DMA, and device communication protocols.

  • Technical Communication

    Ability to write clear, well-documented code, communicate complex technical decisions with evidence, and participate effectively in code reviews and design discussions with engineers across disciplines.

Preferred

  • Rust for Systems Programming

    Nice to have

    Proficiency in Rust for systems programming with demonstrated experience developing Linux kernel code in Rust alongside C. Understanding of memory safety benefits and integration patterns between Rust and C kernel code.

  • Linux Community Contribution

    Nice to have

    Active participation in Linux development through submitting upstream patches, participating in code reviews, filing detailed bug reports, engaging in technical discussions on kernel mailing lists, or direct collaboration with subsystem maintainers.

  • Power Management Optimization

    Nice to have

    Specialized expertise in power management subsystems including CPU frequency scaling (cpufreq), CPU idle states, device suspend/resume mechanisms, and power profiling techniques for optimizing battery life on consumer devices.

  • Real-Time Kernel Extensions

    Nice to have

    Experience with real-time kernel variants (RT preemption patches, PREEMPT_RT) or understanding of real-time scheduling requirements and how to design kernel solutions for latency-sensitive applications.

  • Network Stack Expertise

    Nice to have

    Deep knowledge of Linux network stack including TCP/IP implementation, network drivers, QoS mechanisms, and optimization techniques for network performance and latency.

  • Virtualization Technologies

    Nice to have

    Experience with Linux virtualization including KVM development, device pass-through, virtual device emulation, or container runtime integration at the kernel level.

  • Performance Analysis

    Nice to have

    Advanced proficiency in performance analysis methodologies including flame graphs, call graph analysis, cache profiling, and data-driven optimization approaches for complex systems.

  • Silicon and Hardware Collaboration

    Nice to have

    Experience working closely with custom silicon teams, understanding hardware specifications, device capabilities, and how to optimize kernel code for specific hardware implementations.

Tech stack

Languages

CRustAssembly (x86/ARM)Bash/ShellPythonLLVM IR

Frameworks

Linux KernelAndroid Runtime (ART)Real-Time Scheduling FrameworksDevice Tree

Tools

GDB (GNU Debugger)perfftrace/trace-cmdstracekprobes/uprobessystemtapGitmake/KbuildQEMU/KVMValgrind/AddressSanitizerIRQtop/powertop

Other

Kernel Mailing Lists (LKML)Static Code Analysis (KASAN/UBSAN)Continuous Integration WorkflowsLinux Security Modules (LSM)Documentation/Docstring Standards

Compensation

Pay and benefits.

Base·USD 230,000 – 385,000

Equity·Stock options

Benefits

  • Equity Compensation

    Competitive stock option grants providing ownership stake in OpenAI and alignment with company long-term success in advancing AGI safely.

  • Comprehensive Health Coverage

    Full medical, dental, and vision insurance coverage including preventive care, specialist access, and family plan options to support employee and dependent health needs.

  • Retirement Planning

    401(k) retirement plan with company matching contribution to help employees build long-term financial security and retirement savings.

  • Unlimited Paid Time Off

    Flexible PTO policy enabling employees to balance work and personal commitments, with encouragement for meaningful time away from work to prevent burnout.

  • Professional Development

    Learning budget, conference attendance support, and internal knowledge-sharing programs enabling continuous skill development and staying current with emerging kernel technologies and practices.

  • Hardware and Infrastructure

    State-of-the-art development equipment including high-performance workstations, multiple monitor setups, and remote access to hardware labs for testing kernel changes on real consumer devices.

  • Wellness Programs

    Mental health support, fitness benefits, wellness initiatives, and employee assistance programs promoting holistic employee well-being.

  • Relocation Assistance

    Comprehensive support for eligible candidates relocating to OpenAI's San Francisco headquarters or other office locations, including moving expenses and temporary housing.

  • Parental Leave

    Extended parental leave policies (birth and non-birth) to support employees during major life transitions and family growth.

  • Free Snacks and Meals

    Complimentary office snacks, beverages, and subsidized or free lunch options to support employee nutrition and office culture.

Full posting

Original listing.

About the Team

OpenAI Consumer Devices is building the next generation of products that bring powerful AI into people’s everyday lives. Guided by OpenAI’s mission to ensure AGI benefits all of humanity, our team combines world-class researchers, engineers, designers, and operators who care deeply about creating useful, intuitive, and responsible technology. You’ll have the opportunity to work alongside exceptional people on ambitious, zero-to-one challenges at the intersection of hardware, software, and AI. This is a chance to help define an entirely new category of products—and shape how people experience AI in the future.

Our team works across custom silicon, embedded systems, operating systems, and cloud services to build reliable consumer devices and the platforms behind them. We connect kernel development with the broader software stack to deliver complete product capabilities.

About the Role

As an Operating Systems Engineer focused on the Linux kernel, you will design, develop, and maintain the kernel capabilities that underpin OpenAI’s consumer devices. You’ll bring deep expertise in one or more Linux kernel subsystems and carry solutions through the higher-level software stack.

Your ownership will extend into the userspace services, libraries, tools, and interfaces needed to deliver complete product features. You’ll shape the boundaries between kernel and userspace, make design decisions across the stack, and see your work through development, integration, and production.

In this role, you will:

  • Build kernel capabilities: Design, implement, and maintain Linux kernel subsystem changes that support device capabilities and product requirements.

  • Own features across the stack: Choose appropriate kernel and userspace boundaries, and build the interfaces and supporting components needed to deliver reliable features in shipped products.

  • Debug complex system behavior: Use tracing, profiling, instrumentation, and diagnostic tools to resolve correctness, concurrency, performance, power, and reliability issues in development and production.

  • Measure and validate improvements: Develop tests and representative workloads to demonstrate repeatable performance, power, and reliability gains and detect regressions across kernel and userspace.

  • Partner across disciplines: Work with hardware, firmware, platform, and application engineers to turn system requirements into understandable, maintainable solutions.

  • Contribute sustainable kernel changes: Prepare reviewable patches, incorporate feedback, and contribute fixes and improvements upstream where appropriate. Maintain product-specific changes responsibly as the kernel evolves.

Minimum Qualifications

  • Substantial hands-on experience designing, developing, and debugging one or more Linux kernel subsystems, such as memory management, storage, networking, high-speed peripherals, power management, scheduling, or virtualization.

  • Proficiency in C for kernel and low-level systems development.

  • Strong understanding of kernel concurrency, synchronization, memory ownership, and resource lifetimes.

  • Experience delivering systems capabilities across kernel and userspace, including designing interfaces and diagnosing problems that cross that boundary.

  • Understanding of Linux kernel development principles and practices: maintainable designs, appropriate abstractions, reviewable patches, compatibility awareness, and careful validation to prevent regressions.

You might thrive in this role if you:

  • Are proficient in Rust for systems programming, with experience developing Linux kernel code in Rust alongside C.

  • Participate in the Linux community through patches, code review, testing, bug reports, technical discussions, or collaboration with subsystem maintainers.

  • Take ownership of complete solutions and follow problems across system boundaries.

  • Make careful tradeoffs among functionality, security, performance, power, and maintainability, and explain your decisions with evidence.

  • Work constructively through technical review and communicate clearly with teammates across disciplines.

About OpenAI

OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity. We push the boundaries of the capabilities of AI systems and seek to safely deploy them to the world through our products. AI is an extremely powerful tool that must be created with safety and human needs at its core, and to achieve our mission, we must encompass and value the many different perspectives, voices, and experiences that form the full spectrum of humanity. 

We are an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic.

For additional information, please see OpenAI’s Affirmative Action and Equal Employment Opportunity Policy Statement.

Background checks for applicants will be administered in accordance with applicable law, and qualified applicants with arrest or conviction records will be considered for employment consistent with those laws, including the San Francisco Fair Chance Ordinance, the Los Angeles County Fair Chance Ordinance for Employers, and the California Fair Chance Act, for US-based candidates. For unincorporated Los Angeles County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: protect computer hardware entrusted to you from theft, loss or damage; return all computer hardware in your possession (including the data contained therein) upon termination of employment or end of assignment; and maintain the confidentiality of proprietary, confidential, and non-public information. In addition, job duties require access to secure and protected information technology systems and related data security obligations.

To notify OpenAI that you believe this job posting is non-compliant, please submit a report through this form. No response will be provided to inquiries unrelated to job posting compliance.

We are committed to providing reasonable accommodations to applicants with disabilities, and requests can be made via this link.

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At OpenAI, we believe artificial intelligence has the potential to help people solve immense global challenges, and we want the upside of AI to be widely shared. Join us in shaping the future of technology.

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