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Apple Cellular System Performance Characterization Engineer United States, California, Sunnyvale 144249550
07.04.2025
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In this role, you will be working on the bringup of the cellular end-to-end system including characterization and optimization of RF and system performance in the lab with an emphasis on 5G-NR. Collaborate with multi-functional teams to validate the data and control flows from the Baseband to RF in terms of the various critical metrics. Measure, prioritize, and analyze important metrics data in the lab, and present them with analytics tools. Conduct pre-silicon emulation-based bringup and validation of the cellular system. And simulation-based validation of the control flows and algorithms. Support and maintain high-quality daily Firmware releases.
- BS with a minimum of 3 years of relevant experience.
- 3 years experience in bring up or performance characterization of wireless systems focusing on the PHY and RF layers, as well as hands-on experience in cellular chipsets.
- Solid understanding of communication theory and signal processing, AGC, beamforming, Tx power control, mitigation of radio impairments, and calibration algorithms.
- Strong technical background in wireless system physical layer and protocols, as well as 5G-NR/LTE/UMTS (3G/2G)/WiFi.
- Knowledge of RF performance metrics such as EVM, spectral mask, frequency error and power accuracy etc.
- Working understanding of multiple 4G/5G signaling, and wireless physical layer test equipment (Keysight/LitePoint/Anritsu/R&S) along with their automation interfaces.
- Hands-on experience in bring up of RFIC in the lab and ability to efficiently use lab equipment (such as VSA, VSG, spectrum analyzer, signal generator, power meter, etc).
- Good experience with Python, C/C++, Matlab, and efficient analysis and automation scripting.
- MSEE or beyond is preferred.
- Knowledge and understanding of 3GPP specifications.
- Experience with silicon prototyping, emulation systems, and virtual platforms.
- Experience with analytics platform software (Tableau, Spotfire or similar).
- Work experience in 5G-NR/LTE/UMTS (3G/2G)/WiFi.
Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.
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