Senior Cellular RF / Hardware Design Engineer

Innominds Software; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

Innominds Software is seeking an experienced Senior Cellular RF / Hardware Design Engineer to modify an existing board by swapping the cellular modem and validating RF performance. The role focuses on LTE/4G/5G cellular-radio hardware design, modem integration, and ensuring reliable connectivity in battery-powered, low-power devices.

The ideal candidate will bring hands-on experience with cellular hardware, RF testing, and collaboration with PCB teams to implement a replacement modem that meets

Qualifications

• Hands-on cellular RF or wireless hardware design required.
• Experience integrating cellular modems into embedded hardware.
• Ability to modify boards and replace modems.
• Knowledge of RF circuits, antenna interfaces and impedance matching.
• Experience with LTE/4G; 5G NR is a plus.

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, and antenna connections.
• Support RF schematic updates, impedance matching, antenna integration, 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.

Skills

Cellular RF hardware design

Modem integration into embedded HW

Board modification & modem replacement

RF circuits & impedance matching

LTE/4G cellular technology

5G NR experience (advantage)

Tools

Nordic nRF9151

Nordic nRF91M1

Job description

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.