Embedded Software Developer (IoT) (Fully Remote)

Sigma Software; United States; Remote; USD 90,000 - 125,000; Full time

Job summary

Sigma Software is seeking an experienced embedded software engineer to design and implement components for displays, cameras, sensors, and actuators, plus beverage dispensing logic and secure OTA updates.

You will debug firmware, perform root-cause analysis, and ensure adherence to engineering best practices while working with distributed teams. Familiarity with FreeRTOS/Zephyr and low-level hardware interfaces is a plus.

Qualifications

• At least 4 years of commercial embedded development with C/C++ on STM32/ARM Cortex‑M.
• Experience with UART, I2C, SPI, Wi‑Fi and networking protocols (MQTT, TCP/IP, UDP).
• Experience with FreeRTOS or Zephyr RTOS, secure boot, OTA updates and firmware validation.

Responsibilities

• Design and implement embedded software for displays, cameras, sensors, and actuators.
• Develop beverage dispensing logic, secure OTA updates, and embedded GUI for touchscreens.
• Debug firmware, perform root-cause analysis, and ensure adherence to engineering best practices.

Skills

C/C++ Embedded

Embedded Systems

RTOS Experience

OTA Updates

Secure Boot

Tools

STM32

ARM Cortex-M

UART

I2C

SPI

MQTT

TCP/IP

UDP

FreeRTOS

Zephyr

Job description

• Design and implement embedded software components and drivers for displays, cameras, sensors, and actuators.
• Develop beverage dispensing logic, secure OTA updates, and embedded GUI for touchscreens.
• Debug firmware, perform root-cause analysis, and ensure adherence to engineering best practices.

Qualifications:

• At least 4 years of commercial embedded development experience using C/C++ with STM32 and ARM Cortex-M.
• Hands-on experience with UART, I2C, SPI, Wi-Fi, and networking protocols like MQTT, TCP/IP, and UDP.
• Experience with FreeRTOS or Zephyr RTOS, secure boot, OTA updates, and firmware validation.

Additional Information:

• Upper-Intermediate or higher English level and strong problem-solving skills.
• Ability to work independently in distributed teams and balance low-level hardware interaction with system-level thinking.
• Experience with camera integration, face recognition, embedded file systems, or fluidics control is a plus.

Sigma Software

Sigma Software is a software development company specializing in advanced technologies and distributed engineering teams. They focus on creating meaningful products used in real-life environments, fostering a culture of collaboration, innovation, and engineering quality.