Apple
Embedded 5G/4G Cellular Physical Layer Data Path Signal Processing Firmware Engineer
$175K–$325K
San Diego, California +1 · Full-time · Posted Jun 10, 2026
- Location
- San Diego, California
Sunnyvale, California - Experience
- Minimum 10 years of relevant industry experience.
- Education
- BS
About the job
Develop embedded firmware for cellular physical-layer signal processing on 4G/5G/6G systems, interfacing with specialized ASIC hardware under tight performance, memory, latency, and energy constraints.
What you'll do
- Implement cellular physical-layer algorithms, channels, procedures, and signal-processing functions in firmware.
- Design and optimize firmware architecture; refine fixed-point implementations and validate bit-exactness against algorithmic references.
- Support pre-silicon emulation and verification, and develop tools and methodologies for build, formal verification, and testing.
What they ask for
- BS degree and relevant industry experience.
- Experience implementing DSP algorithms on specialized digital/vector processing hardware or wireless physical-layer channels interfacing with specialized hardware.
- Deep understanding of software engineering principles and computer science fundamentals; facility with C and C++.
- Experience with silicon prototyping, emulation systems, and virtual platforms; computer architecture and high-speed communication hardware/software interfaces; Python scripting.
Nice to have
- Understanding of 3GPP cellular standards and digital/wireless communications.
- Experience with memory-constrained RTOS and concurrent programming; familiarity with machine learning and generative AI.
Pay
USD $175,000 to $308,500 base salary; USD $184,700 to $324,800 base salary
Tools
C, C++, Python, RTOS, 3GPP
AI focus
Familiarity with machine learning concepts and generative AI is preferred; no specific AI development duties are stated.
Model-written summary · the original posting is authoritative