Apple

Apple

Posted via Apple Careers

Embedded 5G/4G Cellular RF Software/Firmware Engineer

Always Hiring

Posted Sep 17, 2026

Role at a glance

Job function
Software Engineering & IT Embedded Software Engineering
Salary
$122.7K – $214.3K/yr
Location
San Diego, California, United States Sunnyvale, California, United States
Work arrangement
On-site
Employment
Full-time
Education
Bachelor's

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About the role

Original posting provided by Apple

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Summary

Do you have a passion for invention and self-challenge? Do you thrive on pushing the limits of what’s considered feasible. As part of a world class modem team, you’ll craft sophisticated groundbreaking embedded firmware that deliver more performance in our products than ever before. You’ll work across fields to transform improved hardware elements into a single, integrated design. Join us, and you’ll help us innovate new cellular technologies that continually outperform the previous iterations! By collaborating with other product development groups across Apple, you’ll push the industry boundaries of what wireless systems can do and improve the product experience for our customers across the world. Do you want to have an impact on every single Apple product?

As a Wireless Firmware Engineer on the physical layer development team, you will be at the center of the embedded 5G/4G/multimode cellular firmware effort within a silicon design group responsible for designing and productizing state-of-the-art cellular SoCs.

Description

This position requires someone comfortable with all aspects of embedded software design and development, that thrives in a dynamic cross-functional organization, is not afraid to debate ideas openly, and is flexible enough to pivot on constantly evolving requirements.

Responsibilities

Specify, design, and develop the physical layer embedded software architecture of a state-of-the-art mobile wireless communications system.
Design, develop and optimize the cellular modem processing algorithms pertaining to Baseband and RF components in a cellular system.
Work with Baseband & RF systems and hardware designers to define hardware architecture and software computing requirements.
Work with cross functional teams to manage dependencies while driving the key Radio features.

Minimum Qualifications

Minimum requirement of a bachelors degree
Knowledge of mobile communications in 4G/5G 3GPP protocols and physical layer & radio aspects

Preferred Qualifications

Solid understanding of Digital signal processing and RF fundamentals.
Solid understanding of software engineering principles, and core computer science fundamentals.
Excellent command of C and C++, and working experience with compilers, build and source code control tools.
Working knowledge of CPU architecture, HW/SW interfaces and memory management.
Proficiency with debugging in embedded software systems. Familiarity with JTAG and ETM Trace tools.
Knowledge of Communication theory, Wireless standards, Radio architecture and Interfaces

Pay & Benefits — San Diego, California, United States

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 $122,700 and $214,300, 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.

Application Deadline

Apple accepts applications to this posting on an ongoing basis.

Pay & Benefits — Sunnyvale, California, United States

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 $129,300 and $225,300, 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.
Apple

About the company

Apple

Large Enterprise

Apple Inc. is a global technology company known for its innovative products and services, including the iPhone, iPad, Mac computers, and Apple Watch. Founded in 1976, Apple has continuously pushed the boundaries of design and functionality, earning a reputation for high-quality consumer electronics and software solutions like iOS and macOS. With a strong commitment to user experience and privacy, Apple also leads in digital services, offering platforms such as the App Store, Apple Music, and iCloud. The company's focus on sustainability and corporate responsibility further enhances its standing as a leader in the technology sector.