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Apple

Core OS Software Engineer - USB4/Thunderbolt

Cupertino, CA$150,400 – $277,600Posted Oct 10, 2026

Apply on company site View full job

Why you should apply for a job to Apple:

Ranked as one of the Best Technology Companies in 2020
3.7/5 in overall job satisfaction
3.1/5 in supportive management
66% say women are treated fairly and equally to men
65% would recommend this company to other women
66% say the CEO supports gender diversity

Ratings are based on anonymous reviews by Fairygodboss members. See all reviews ›

Are you a big-picture thinker who loves setting ambitious goals? Do you have a passion for

understanding how each line of code affects all the others? In the Core Operating Systems

group, you'll ensure the OS is inseparable from each device's identity as a whole. That's

because this group is committed to building fully integrated operating systems that combine

hardware, software, and apps into a single Apple experience. Your dedication to cross-

disciplinary collaboration will help develop groundbreaking technologies, such as iOS, macOS.

By crafting these distinct, holistic user experiences, you'll continue to uphold and advance the

excellence people expect from Apple devices!

In Core I/O, we're revolutionizing connectivity by pushing the boundaries of I/O technology to

deliver incredibly fast data transfer, seamless device integration, and the magical user

experiences our customers love across Mac, iPad, and beyond.

Description

Weʼre looking for a motivated engineer with excellent programming, problem solving, and

communication skills to join our experienced team. As a USB4 and Thunderbolt software

engineer, you'll be at the forefront of implementing industry standard protocols that power

everything from pro video workflows to everyday file transfers. Join the team responsible for

shipping code that runs on nearly every Apple product, and collaborate with brilliant engineers

to unlock the potential of the USB4 ecosystem.

","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 Appleʼs operating systems.

Build breakthrough capabilities like RDMA over Thunderbolt, enabling distributed AI inference across clusters of Thunderbolt-connected Macs.

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 Appleʼs solutions.

Preferred Qualifications

Expertise in Thunderbolt and/or USB4.

Expertise in related technologies, e.g. USB, USB-C, USB-PD, DisplayPort, and/or PCI.

2+ years of relevant industry experience in software development.

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.

Self-motivated and able to work independently.

Minimum Qualifications

Strong expertise in C and C++ programming languages.

Strong understanding of computer science fundamentals, with expertise in operating systems and device driver models.

Bachelor's degree in Computer Science/Computer Engineering, or equivalent experience/skills.

Pay & Benefits

At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $150,400 and $277,600, and your base pay will depend on your skills, qualifications, experience, and location.

Apple employees also have the opportunity to become an Apple shareholder through participation in Apple's discretionary employee stock programs. Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple's Employee Stock Purchase Plan. You'll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses - including tuition. Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation. Learn more about Apple Benefits

Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.

About Apple

Working at Apple means doing more than you ever thought possible and having more impact than you ever imagined.

Size: 10,000+ employees
Industry: Technology: Manufacturing

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