Cellular PHY Systems Engineer

San Francisco Bay Area San Diego Until 9/22/2026 10+ years exp First posted July 24, 2026 Last posted July 24, 2026
Job description

Imagine what you could do here. At Apple, new ideas have a way of becoming extraordinary products, services, and customer experiences very quickly. Bring passion and dedication to your job, and there's no telling what you could accomplish. Dynamic, sensible people and inspiring, innovative technologies are the norm here. Join us to help deliver the next groundbreaking Apple product. Do you love working on challenges that no one has solved yet? Are you ready to join a team redefining hardware technology? We are searching for a dedicated engineer with 10+/- years’ experience to join our exciting team of innovators. In this role, you will be a key member of the system engineering team working on modem systems features and requirements.

Description

As a Cellular System Engineer, you will be responsible for the pre- and post-silicon bring up, and validation of end-to-end cellular systems. You will understand and map systems algorithms and requirements to HW/FW architecture, simulation and emulation-based validation of the control flows and PHY/L1 algorithms.

Minimum Qualifications

BS and 10+ years of relevant experience is required.
Knowledge of cellular communication standards: 6G, 5G NR, 4G LTE, PHY Uplink channels and signals.
Deep-knowledge of communication system theory and signal processing will be important for this role to design algorithms such as LDPC, Polar, Turbo encoder design, signal estimation and detection, automatic gain control, RF impairments estimation and correction, channel estimation, OFDM, MIMO detection, signal waveform generation and upsampling, etc.
Experience with Matlab, C/C++ and/or Python for algorithm development, modeling (floating-point and fixed-point) and link-level simulation.

Preferred Qualifications

Experience in low power algorithm design for power critical applications is helpful.
Experience in E2E timeline analysis for time-critical algorithms is helpful.
Experience in chip bring-up including the use of lab equipment such as protocol test equipment, spectrum analyzers, signal generators, power meters, etc..
In-depth knowledge of wireless communication systems with hands-on experience in lab testing & characterization.
Strong analytical skills (linear algebra, random processes, detection and estimation, etc.)

About this role

Summary

Designs and validates cellular system algorithms, hardware, and software for modem features.

Job title

Cellular PHY Systems Engineer

Experience level

10+ years

Minimum experience

10+ years exp

Industry

technology

Location requirements

Must be in or near San Francisco Bay Area or San Diego, remote not specified.

Salary

Not specified

Management role

No

Skills & keywords

Required skills

cellular standardscommunication system theorysignal processingMatlabC++Python

Preferred skills

low power algorithm designE2E timeline analysislab testingwireless communication systemsmathematics

Specializations

cellular systemssignal processingradio frequencyalgorithm designwireless communication
Locations

Structured locations inferred from the posting.

Unknown location

On-site

Unknown location

On-site