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Core OS Software Engineer - USB4/Thunderbolt

Apple

$126,800 - $220,900
Sep 21, 2025
Cupertino, CA, US
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In the Core Operating Systems group at Apple, the business problem is to ensure the OS is inseparable from each device's identity as a whole by building fully integrated operating systems that combine hardware, software, and apps into a single Apple experience. In Core I/O, the problem is revolutionizing connectivity by pushing the boundaries of I/O technology to deliver incredibly fast data transfer, seamless device integration, and magical user experiences across Mac, iPad, and beyond.

Requirements

  • Strong expertise in C and C++ programming languages.
  • Strong understanding of computer science fundamentals, with expertise in operating systems and device driver models.
  • Expertise in Thunderbolt and/or USB4.
  • Expertise in related technologies, e.g. USB, USB-C, USB-PD, DisplayPort, and/or PCI.
  • Development experience in IOKit/macOS/iOS, or equivalent OS driver environment.
  • Experience debugging and contributing to complex technology stacks.
  • Experience using logic analyzers, protocol analyzers, or oscilloscopes for data collection and debugging.

Responsibilities

  • Develop new, innovative Apple products across a fast-paced roadmap.
  • Influence the definition of Apple Silicon and hardware, implementing new features and supporting product bring-up.
  • Contribute to USB4 and Thunderbolt kernel driver extensions across Apple’s operating systems.
  • Implement new features and enhancements in software as the specifications evolve over time.
  • Debug, root cause, and develop solutions to enhance the USB4 and Thunderbolt customer experience.
  • Collaborate with vendors to drive improvement of the USB4 and Thunderbolt ecosystems, and to ensure interoperability with Apple’s solutions.

Other

  • Motivated engineer with excellent programming, problem solving, and communication skills.
  • Self-motivated and able to work independently.
  • Bachelors degree in Computer Science/Computer Engineering, or equivalent experience/skills.
  • 2+ years of relevant industry experience in software development.