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# Cellular PHY Systems Engineer

- **Company:** Apple Inc.
- **Location:** Sunnyvale, CA, United States
- **Contract:** Permanent contract
- **Skills:** Cellular Communication, LTE (Telecommunication), Algorithm Design, Systems Engineering, C++ (Programming Language), Emulators, Python (Programming Language), MATLAB, Signal Processing, 5G NR
- **Published:** October 11, 2026
- **Apply:** https://www.juju.com/job/1_apple2-200673128

## About the Role

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** + MS in EE or related field. + Knowledge of cellular communication standards: 5G NR, 4G LTE, PHY uplink channels and signals.
Familiarity with 6G is an advantage. + 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, uplink power 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.) Apple is an equal opportunity employer that is committed to inclusion and diversity.
We seek to promote equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics.