RF Modeling Systems Engineer

At Apple, new ideas have a way of becoming extraordinary products and customer experiences. Bring passion and dedication to your job, and there's no telling what you could accomplish. Dynamic environment, inquisitive people, and innovative technologies are the norm. 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 dedicated engineers to join our exciting team of innovators. In this role, you will be a key member of the RM modeling system engineering team working on modem systems features and requirements. ## Description - Model, design, and simulate state-of-the-art RF for 4G/5G/6G modem wireless communication systems. - Implement system models and perform detailed performance investigations to allow performance sign-off. - Collaborate with RF systems and analog circuit designers to capture designs and develop models. - Develop AI/ML modem solutions and mitigation techniques. ## Responsibilities Develop RF models for 5G/6G cellular and 5G NTN Perform end-to-end characterization of the RF impairments of the modem, develop analytical models and support RF/modem spec definition Develop RF mitigation algorithms for various impairments ## Minimum qualifications BS and a minimum of 10 years relevant industry experience Deep knowledge of signal processing and communication systems Strong analytical skills (linear algebra, random processes, detection and estimation, etc.) Experience with Matlab, C/C++, Python for algorithm development. ## Preferred qualifications Experience with AI/ML applications in wireless communication is strongly desirable. Strong background in AI/ML and familiarity with the tools such as PyTorch and TensorFlow. Familiarity with RF impairments (phase noise, DC offset, IQ imbalance, inter-modulation, etc), their impact on modem performance, and RF mitigation techniques. Knowledge of RF/analog components (LNA, filters, mixers, ADC/DAC), digital front-end processing, automatic gain control. Knowledge of cellular communication standards: 5GNR, 4G LTE. Knowledge of RF systems and design flows with hands-on experience in lab testing & characterization.