Senior Embedded 5G/4G PHY Firmware Engineer

Apple Inc.; Sunnyvale (CA); On-site; USD 175,000 - 309,000; Full time

Job summary

Apple Inc. in Sunnyvale seeks an Embedded 5G/4G Cellular Physical Layer Data Path Signal Processing Firmware Engineer to join a silicon design team crafting multimode cellular SoCs.

You will implement physical layer algorithms and tightly coupled firmware for DSP hardware, ensuring performance, energy efficiency and verifiability. The role requires deep DSP know-how, strong C/C++ software engineering, and experience with silicon prototyping, emulation, and virtual platforms.

Qualifications

• BS and a minimum of 10 years relevant industry experience.
• Experience either with implementing digital signal processing algorithms using special purpose digital/vector signal processing HW -OR- wireless physical layer channels by interfacing to special purpose hardware.
• Deep understanding of software engineering principles, and core computer science fundamentals.
• Fundamental facility with C and C++, compilers, build and source code control tools.
• Experience with silicon prototyping, emulation systems, and virtual platforms.
• Solid understanding of computer architecture with particular emphasis on the HW/SW interfaces of high-speed communication subsystems.

Responsibilities

• Implement cellular physical layer algorithms on digital/vector signal processors with tight time, latency, memory and energy budgets by interfacing to specialized cellular ASIC hardware.
• Develop firmware for 3GPP channels and procedures: PDCCH, PDSCH, PBCH, PUCCH, PUSCH, PRACH.
• Refine signal processing algorithms for efficient firmware/hardware execution with systems engineers.
• Design and implement firmware architecture for power, performance and cost; validate bit-exactness to references.
• Support pre-silicon emulation systems and verification methodologies.

Skills

C/C++

DSP algorithms

Software engineering

Computer architecture

RTOS

Concurrency

HW/SW interfaces

Education

Bachelor's degree

Tools

Emulation systems

Virtual platforms

Pre-silicon emulation

Formal verification tools

Job description

Apple Inc. in Sunnyvale seeks an Embedded 5G/4G Cellular Physical Layer Data Path Signal Processing Firmware Engineer to join a silicon design team crafting multimode cellular SoCs.

You will implement physical layer algorithms and tightly coupled firmware for DSP hardware, ensuring performance, energy efficiency and verifiability. The role requires deep DSP know-how, strong C/C++ software engineering, and experience with silicon prototyping, emulation, and virtual platforms.