Modem System Test Engineer Wireless Technologies and Ecosystems

Join the Wireless Technologies and Eco-Systems (WTE) organization and drive innovation that matters! We build and seamlessly integrate technologies that enrich peoples lives and deliver the best user-experience. We are looking for a highly reciprocal individual who can excel in a high-paced environment. Be ready to make something extraordinary when you come here. Dynamic encouraging people and innovative industry-defining technologies are the norm at Apple. If youre passionate about building technology that will make a difference we may have the job for you!n

We expect you to be hands-on relying upon diagnostics analytics crowd sourced information lab/field experimentations as well as code/architecture review to exploit the opportunities for improvement and work multi-functionally with platform architecture standardization firmware/protocol development system test u0026 carrier engineering teams to drive the enhancement proposals and baseband optimizations. You will be required to develop advanced system evaluation and debugging capabilities. Our members enjoy the flexibility to be involved in all aspects of Protocol software - PHY RF SIM NAS AS IP TCP/UDP and iOS interfaces to ensure the most robust and customer friendly software. If you are passionate about cellular technologies want to make an impact and have the desire to work on groundbreaking cellular technologies then we are looking for you. As part of this team youll be impacting iPhone user experience in 100 countries by engaging in continuous process improvements for a well tested and robust software.n

Test Design u0026 Execution: Define develop and execute system-level test plans exercising 5G NR (FR1 u0026 FR2/mmWave) and emerging standards across protocol control/user planes (L1/L2/L3) and physical-layer performancen Root-Cause Analysis: Analyze protocol traces air-interface captures and diagnostic logs (RRC NAS PDCP RLC MAC PHY) to debug complex failure modes throughput bottlenecks and interoperability issuesn Intelligent Test Automation: Build scalable test automation and leverage machine learning/data-driven methods to automate anomaly detection KPI trend analysis and failure triage across large test setsn Cross-Functional Collaboration: Partner with baseband firmware protocol software platform architecture and RF hardware teams to reproduce issues validate bug fixes and ensure 3GPP conformancenTestbed u0026 Tooling Development: Contribute to internal test infrastructure test case development and evaluation platforms spanning both commercial test equipment and software-defined radio (SDR) / open-source protocol testbedsn

Education: Masters degree in Electrical Engineering Computer Engineering Telecommunications Computer Science or a related fieldn Protocol u0026 Systems Knowledge: Deep understanding of 3GPP LTE and 5G NR specifications across the protocol stack (PHY MAC RLC PDCP SDAP RRC NAS) and end-to-end cellular architecturen Hands-on Implementation or Validation: Hands-on experience implementing debugging or validating cellular protocol stacks or physical-layer modules using commercial test equipment or open-source wireless testbedsn Scripting u0026 Automation: Strong proficiency in Python for test automation data processing and log parsingn Physical Layer Fundamentals: Solid grasp of digital communication principles modulation OFDM and channel coding schemes

Applied AI/ML in Wireless: Experience applying machine learning frameworks (PyTorch TensorFlow) to wireless communications problems (e.g. intelligent scheduling link adaptation neural decoders or automated log anomaly detection).n Standards u0026 Pre-Standard Research: Familiarity with 3GPP standardization workflows (RAN1 RAN2 RAN4 or RAN5) or research contributions in beyond-5G/6G physical and MAC layer architecturesn Lab Instrumentation: Exposure to wireless test equipment (call boxes network emulators spectrum analyzers) or RF interface protocolsn