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Apple

Firmware Engineer

3 weeks ago• Sunnyvale, CA
Viewed on February 1, 2026
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About Us

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

• Size: 10000+ employees
• Industry: Technology, Information Technology, Software, Consumer Goods & Services

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At Apple, new way of thinking and insights can turn into extraordinary products very quickly. The success we are striving will be result of highly skilled team working in an environment that nurtures creativity, partnership and novelty in solving tough problems. As a firmware engineer in the Wireless Connectivity Silicon Team, you will be responsible for the design, development, and bring up of innovative wireless silicon for various Apple's products. Bringing your passion and dedication will lead to innovative silicon solutions for Apple products. Join us! We are looking for a forward-thinking, dedicated, highly competent, experienced firmware engineers to design, develop and bring up fresh silicon for Apple's products - the i Phone, Mac and more! New challenges arise every day that require sharp problem-solving skills of individuals. Are you ready to take on this challenge?

Description:

We are seeking hard-working, creative and focused engineers to join the best-in-class team that plays a significant part in the development of new silicon for Apple eco-systems by engaging in a dynamic, highly collaborative environment.","responsibilities":"Deep understanding of components/modules within wireless communication systems and the corresponding calibration and impairment reduction techniques.

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By signing up, you agree to our Develop methods/algorithms to alleviate hardware induced impairments by calibration, cancellation and other applicable techniques.

PHY firmware architecture and design, including calibrations, real-time processing flows, collaboration with RF hardware, microcode, and MAC layer.

Develop highly efficient designs delivering outstanding performance, optimizing power and memory footprints while meeting hard-real-time latency requirements.

Debug real-time systems with limited visibility, working hands-on with development boards and lab equipment.

Collaborate with Radio, MAC, and Systems engineering teams to architect, define and implement innovative algorithms, calibrations, and protocols.

Support pre-silicon validation efforts, including simulation, emulation, and FPGA prototyping.

Develop SoC test and calibration capabilities for chip, module, and product factories.

Support post-silicon bring up, validation, performance characterization, system integration and debugging.

Repeatedly measure and optimize results using various test harnesses.

Automate calibration and verification processes.

Preferred Qualifications:

You have knowledge of wireless systems and protocols such as Wi-Fi or LTE/NR.

You bring in excellent problem-solving skills to address technical issues during design, development and maintenance phases.

Deep understanding of data structures, object-oriented design, and system architecture in an embedded environment.

Strong software engineering skills including design, development (using C, C++), scripting (Python), and debugging.

Familiarity with 32 bit micro-controller architecture, low-level hardware interfaces, register and interrupt programming, bare-metal software development, clock and power management.

Experience with configuration (GIT, Perforce) and release management, continuous integration, unit and regression testing.

Strong understanding of design strategies for maintainability, scalability, and code reuse.

Excellent communication skills - both written and oral.

Highly organized, motivated and passionate about driving results.

Minimum Qualifications:

BS with 3 plus years of industry experience.

Strong embedded SW fundamentals, including knowledge of design and development-flows, real-time constrains, concurrency, multi-processor systems, memory management.

Apple is an equal opportunity employer that is committed to inclusion and diversity. We seek to promote equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics. Learn more about your EEO rights as an applicant .

Client-provided location(s): Sunnyvale, CAJob ID: apple-200628426-3956_rxr-660Employment Type: OTHERPosted: 2026-01-07T19:12:54Apply on company site

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