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Embedded 5G/4G Cellular RF SW/FW Engineer

Apple

$139,500 - $258,100
Sep 17, 2025
San Diego, CA, US
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Apple is looking to innovate new cellular technologies that continually outperform previous iterations and push the industry boundaries of what wireless systems can do, improving the product experience for customers across the world. This role is central to the embedded 5G/4G/multimode cellular firmware effort within a silicon design group responsible for designing and productizing innovative cellular SoCs.

Requirements

  • Knowledge of communication theory, Wireless standards, Radio architecture, and Interfaces.
  • Working experience in real time embedded systems related projects.
  • Deep 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.
  • Solid understanding of computer architecture with particular emphasis on the HW/SW interfaces of wireless communication systems.
  • Proficiency with debugging in embedded software systems. Familiarity with JTAG and ETM Trace tools.
  • Knowledge of mobile communications in 4G/5G 3GPP protocols and PHY layer radio aspects.

Responsibilities

  • Specify, design, and implement the physical layer embedded software architecture of an innovative mobile wireless communications system.
  • Design, develop and optimize the Cellular Processing algorithms pertaining to Baseband and RF components in a cellular system.
  • Implement RF Control software in the baseband modem with precise timing requirements.
  • Work with Baseband & RF systems and hardware designers to define hardware function and software computing requirements.
  • Work with systems and IC designers to optimize power optimization for all RF circuitry in the cellular system.
  • Work with multi-functional teams to manage dependencies while driving the key Radio features.

Other

  • Minimum BS and 3 + years of relevant industry experience.
  • thrives in a dynamic multi-functional organization, is not afraid to debate ideas openly, and is flexible enough to shift on constantly evolving requirements.
  • Experience with using RF Test equipment for RF validation, RF Calibration and debugging a plus.
  • Knowledge of Control aspects of RF transceiver and RF front end components for 4G/5G Control path processing.
  • Understanding of design principles to meet tight real time deadlines a plus.