Job Title: Senior Cellular RF / Hardware Design Engineer Location: Remote Experience: Senior-level, with demonstrated cellular hardware design experience Job Summary We are seeking an experienced Cellular RF / Hardware Design Engineer to modify an existing electronic board by replacing its current cellular modem with a suitable alternative. The ideal candidate will have hands-on experience designing LTE/4G/5G cellular-radio systems, integrating cellular modems, and validating RF hardware performance. Experience with Nordic Semiconductor nRF9151 or nRF91M1 is highly preferred. Experience designing low-power, battery-operated devices is also desirable.

Key Responsibilities

Modify an existing hardware board to replace the current cellular modem. Design and integrate LTE/4G/5G cellular-radio hardware. Evaluate modem interfaces, RF requirements, power supply requirements, and antenna connections. Support RF schematic updates, impedance matching, antenna integration, and RF performance optimization. Perform hardware bring-up, RF debugging, and cellular connectivity validation. Optimize power consumption for low-power and battery-operated devices. Collaborate with PCB layout engineers to ensure successful implementation of the updated design. Required Skills Hands-on cellular RF or wireless hardware design experience. Experience integrating cellular modems into embedded hardware products. Experience modifying existing board designs and replacing electronic components or modems. Understanding of RF circuits, antenna interfaces, impedance matching, and RF validation. Experience with LTE/4G cellular technologies; 5G NR experience is an advantage. Preferred Skills Nordic Semiconductor nRF9151 or nRF91M1 experience. LTE-M, NB-IoT, or comparable cellular IoT modem integration. Low-power hardware design and battery-powered devices. Cellular RF testing, troubleshooting, and certification support. PCB schematic design and collaboration with layout teams. Ideal Candidate A hands-on hardware engineer who has previously modified an existing cellular-enabled board, integrated a replacement modem, and validated the resulting RF and connectivity performance.