Embedded Firmware Engineer

Simbex, LLC

Lebanon (NH)

On-site

USD 110,000 - 150,000

Full time

14 days+

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Job summary

Simbex, LLC seeks an experienced embedded systems engineer to design, implement, and maintain firmware for ARM Cortex-M microcontrollers using an RTOS. You will work on BLE, OTA updates, and cloud connectivity while integrating sensors and ensuring low-power operation.

Collaborate with algorithm teams, perform thorough testing, and contribute to CI/CD workflows, documentation, and hardware bring-up activities in a fast-growing IoT environment.

Qualifications

BS in Computer Engineering, Electrical Engineering, Embedded Systems, or related field.
3-6 years of embedded firmware development experience.
Strong C/C++ programming skills.
Experience developing firmware for ARM Cortex-M microcontrollers.
Experience with an RTOS (Zephyr preferred).
Experience with SPI, I2C, UART, USB, GPIO, and embedded peripherals.
Experience with Bluetooth Low Energy (BLE).
Strong debugging and problem-solving skills.

Responsibilities

Design, develop, and maintain embedded firmware using C/C++.
Develop firmware for ARM Cortex-M microcontrollers using an RTOS (Zephyr preferred).
Implement drivers and interfaces for peripherals including SPI, I2C, UART, USB, and GPIO.
Support board bring-up and hardware integration activities.
Develop BLE applications for device communication and configuration.
Implement OTA firmware update capabilities.
Support cloud connectivity using MQTT or CoAP.
Optimize firmware for low-power operation.
Integrate IMUs and other embedded sensors into production firmware.
Support sensor fusion and motion-processing algorithms.
Collaborate with algorithm developers to implement and optimize embedded solutions.
Develop and execute unit, integration, and system-level tests.
Troubleshoot firmware and hardware integration issues.
Contribute to CI/CD workflows and software quality practices.
Maintain technical documentation and support product verification activities.

Skills

C/C++

Embedded Systems

ARM Cortex-M

BLE

Zephyr RTOS

SPI/I2C/UART/USB

Debugging

Education

BS in Computer Engineering, Electrical Engineering, Embedded Systems, or related field

Tools

OTA firmware updates

Cloud protocols (MQTT/CoAP)

Sensor integration

IMUs/sensors

Job description

Responsibilities

Firmware Development

Design, develop, and maintain embedded firmware using C/C++
Develop firmware for ARM Cortex-M microcontrollers using an RTOS (Zephyr preferred)
Implement drivers and interfaces for peripherals including SPI, I2C, UART, USB, and GPIO
Support board bring-up and hardware integration activities

Wireless & IoT

Develop Bluetooth Low Energy (BLE) applications for device communication and configuration
Implement over-the-air (OTA) firmware update capabilities
Support cloud connectivity using IoT communication protocols such as MQTT or CoAP
Optimize firmware for low-power operation

Sensor Integration

Integrate IMUs and other embedded sensors into production firmware
Support sensor fusion and motion-processing algorithms
Collaborate with algorithm developers to implement and optimize embedded solutions

Testing & Quality

Develop and execute unit, integration, and system-level tests
Troubleshoot firmware and hardware integration issues
Contribute to CI/CD workflows and software quality practices
Maintain technical documentation and support product verification activities

Required Qualifications

BS in Computer Engineering, Electrical Engineering, Embedded Systems, or related field
3-6 years of embedded firmware development experience
Strong C/C++ programming skills
Experience developing firmware for ARM Cortex-M microcontrollers
Experience with an RTOS (Zephyr preferred)
Experience with SPI, I2C, UART, USB, GPIO, and embedded peripherals
Experience with Bluetooth Low Energy (BLE)
Strong debugging and problem-solving skills

Preferred Qualifications