Demo

Senior Firmware Engineer

ScaleFlux
Milpitas, CA Full Time
POSTED ON 12/23/2025
AVAILABLE BEFORE 1/21/2026

Job Title: CXL Firmware Engineer

Location: Milpitas, California

Job Type: Full-time

Department: Engineering/Firmware Development


Job Description:

We are seeking a highly skilled CXL (Compute Express Link) Firmware Engineer to join our team. This role will focus on the development, optimization, and debugging of firmware for next-generation CXL-enabled systems. The ideal candidate will have a strong background in low-level firmware development, PCIe, memory subsystems, and system software for high-performance computing environments.


Key Responsibilities:

  • Design, develop, and maintain firmware solutions for CXL-based devices and memory systems.
  • Implement and optimize firmware components supporting CXL protocol, including memory pooling, coherency, and device enumeration.
  • Work closely with hardware, software, and system architecture teams to ensure seamless CXL integration.
  • Debug and resolve firmware issues related to CXL, PCIe, and memory management using various debugging tools and techniques.
  • Collaborate on performance tuning and power optimization for CXL-based systems.
  • Stay updated on CXL specifications and contribute to industry discussions and standards where applicable.
  • Develop unit tests, validation frameworks, and automated testing strategies to ensure firmware quality and reliability.
  • Provide technical documentation and support to internal teams and external partners.


Required Qualifications:

  • Engineer with 5 years of experience in Linux kernel and kernel module development
  • Experienced in Linux support and development with knowledge in one or more of the following areas: memory management, cache and memory subsystems, schedulers, filesystems, architecture-specific code (x86, ARM, RISC-V)
  • Hands-on experience with high-speed protocols like PCIe/CXL is a plus
  • Good system knowledge and debugging mechanisms in the Linux kernel (ftrace, kdump, ktraces, ebpf, …)
  • Familiarity with embedded systems development at SoC / Bare Metal level.
  • Good knowledge of industry standards, such as BMC, IPMI, PCI/PCIe/CXL, I2C, I3C, SPD, SMBUS, ACPI and etc.
  • Good knowledge of OCP standards, MCTP, PLDM, SPDM, JEDC and etc.
  • Well organized, with good written and oral communication skills.
  • Self-learning skill to understand and develop good understanding of the system.


Why Join Us?

  • Work on cutting-edge CXL technology shaping the future of memory and computing architectures.
  • Collaborate with industry leaders and top engineers in high-performance computing and semiconductor design.
  • Competitive compensation, benefits, and career growth opportunities.


If you are passionate about firmware development and excited to work on next-generation CXL-based systems, we would love to hear from you!

Salary.com Estimation for Senior Firmware Engineer in Milpitas, CA
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