Cellular System Performance Engineer - San Diego California

Company: Apple Inc.
Location: San Diego, California
Posted On: 11/11/2024

Do you have a passion for invention and self-challenge? This role is at the center of a silicon design group responsible for crafting and productizing innovative cellular SoCs! As a cellular system performance engineer, you will be responsible for the bringup and validation of end-to-end cellular systems. Join us, and help us innovate new wireless systems technologies that continually outperform the previous iterations! By collaborating with other product development groups across Apple, you'll push the industry boundaries and improve the product experience for our customers across the world.DescriptionWorking 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.Minimum Qualifications

• BS with a minimum of 3 years of relevant experience.
• Experience in bring up or performance characterization of wireless systems focusing on the PHY and RF layers.
• 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.
• Knowledge of RF performance metrics such as EVM, spectral mask, frequency error, 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, 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.Preferred Qualifications
  • MSEE or beyond is preferred.
  • Hands-on experience in cellular chipsets.
  • Work experience in 5G-NR/LTE/WiFi.
  • Knowledge and understanding of 3GPP specs.
  • Experience with silicon prototyping, emulation systems, and virtual platforms.
  • Experience with analytics platform software (Tableau, Spotfire or similar).Apple is an equal opportunity employer that is committed to inclusion and diversity. We take affirmative action to ensure 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. Learn more about your EEO rights as an applicant.
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