Modem Hardware/Radio Frequency Engineer in Architecture & Networking Solutions (Telematics) | AUMOVIO Korea The Senior Hardware/RF Engineer to join our Telematics R&D team, responsible for developing next-generation Telematics Control Units (TCUs) for global automotive OEMs. We deliver high-performance hardware platforms that integrate cellular (LTE/5G), GNSS(Global Navigation Satellite System), Wi-Fi, Ethernet, and in-vehicle network technologies, with strict adherence to automotive standards. This role combines core hardware development with RF(Radio Frequency) design, validation, and integration, ensuring optimal wireless performance under challenging automotive environments.   Responsibilities: Design, develop, and validate automotive-grade hardware including schematics and multi-layer PCB(Printed Circuit Board) layouts. Integrate and evaluate RF components: cellular modems, GNSS modules, Wi-Fi/Bluetooth transceivers, antennas, and RF filters. Perform RF layout optimization, transmission line matching, and antenna placement analysis for optimal signal integrity and minimal interference. Conduct RF testing and troubleshooting using spectrum analyzers, network analyzers, and RF chambers. Support EMC(Electromagnetic Compatibility) and RF compliance testing (e.g., CISPR 25, ISO 11452) in collaboration with test and certification teams. Collaborate with software, system, validation, and mechanical engineers to ensure system-level integration and performance. Interface with component vendors for RF tuning, design reviews, and module certification support. Support hardware bring-up, root cause analysis, and failure resolution across development and validation phases. Create and maintain technical documentation: schematics, BOMs(Bills of Materials), validation reports, and design guides.