Modem Firmware Engineer

About this opportunity

Join our team.

Job Location: Boise,

• Design, develop, and integrate cellular modem modules into Open Wrt-based platforms. Own the end-to-end modem stack development, including kernel drivers, user-space daemons, and network configuration, ensuring reliable connectivity, seamless failover, and optimal throughput across 5G cellular.
• Integrate 5G modem modules into Open Wrt-based router and gateway platforms
• Develop and maintain kernel drivers for modem communication interfaces (USB, PCIe)
• Implement and optimize QMI/RMNET/AT command interfaces for modem control
• Configure network interfaces, routing policies, and failover mechanisms
• Implement connection management daemons for automatic reconnection and band selection
• Integrate SMS, GPS/GNSS, and voice functionality where applicable
• Optimize data throughput and reduce latency across modem interfaces
• Perform modem firmware updates (FOTA) and version management
• Debug connectivity issues across the full stack (RF, baseband, driver, user-space)
• Collaborate with hardware team on antenna design validation and RF performance
• Create integration documentation and developer guides

• 5+ years experience in modem integration across multiple chipset vendors, embedded Linux development
• Linux kernel development (driver development, device tree, kernel modules)
• Open Wrt/LEDE build system and package development
• Cellular modem integration (QMI, RMNET, AT commands)
• USB/PCIe modem interface drivers
• C/C++ programming for embedded Linux systems
• Cross-compilation tool chains and embedded build systems

• Required:
  
  Bachelor’s degree in Electrical Engineering, Computer Engineering, Computer Science, or related field
• Preferred:
  Master’s degree in Embedded Systems, Networking, or related field

• Experience with Qualcomm SDX
  55/SDX
  62/SDX
  65/SDX
  72 based modules
• Experience with Quectel or Telit Wireless modules
• Open Wrt procd/ubus/UCI framework expertise
• Modem Manager or custom connection manager development
• Multi-WAN and WAN failover implementation (mwan3)
• IPv4/IPv6 dual-stack configuration over cellular
• VPN integration over cellular links (Wire Guard, OpenVPN, IPsec)
• eSIM/eUICC provisioning and profile management
• WWAN power management and thermal throttling
• Carrier aggregation and band locking configuration
• Gobi Net//mhi driver development
• Device tree overlay creation for modem hardware

At Ericsson, you´ll have an outstanding opportunity. The chance to use your skills and imagination to push the boundaries of what´s possible. To build solutions never seen before to some of the world’s toughest problems. You´ll be challenged, but you won’t be alone. You´ll be joining a team of diverse innovators, all driven to go beyond the status quo to craft what comes next.

to find all you need to know about what our typical hiring process looks like.

Ericsson uses a merit-based hiring approach that values people with different experiences, perspectives and skillsets. We truly believe this approach drives innovation, which is essential for our future growth. We encourage people from all backgrounds to apply and realize their full potential as part of our Ericsson team. Ericsson is proud to be an Equal Opportunity employer, learn more.

If you need assistance or to request an accommodation due to a disability, please contact Ericsson at hr

Disclaimer: The above statements are intended to describe the general nature and level of work being performed by employees in this position. They are not an exhaustive list of all responsibilities, duties and skills required for this position, and you may be required to perform additional job tasks as assigned.

Primary country and city: United States (US) || Boise ()

Job details: Developer

At Ericsson, we know that our people are the key to our success. We offer a competitive package to help with your individual needs and goals.

The salary range for this position is dependent on various factors including, but not limited to, location, and the candidate’s combination of…