Embedded Software Developer (IoT) - Remote

About the role

Sigma Software is looking for a middle-level Embedded Software Developer to work remotely on a smart beverage solution called the Curated House System. The customer is an international company developing IoT-based smart home and lifestyle products. The role combines real-time firmware, touchscreen interfaces, networking, computer vision and secure OTA functionality.

Key responsibilities

• Design and implement embedded software components and hardware drivers for displays, cameras, sensors and actuators
• Develop beverage dispensing logic, including temperature control, pumps, valves and safety mechanisms
• Implement and maintain secure OTA firmware updates over HTTPS
• Develop and optimise embedded GUIs for LCD touchscreens
• Write clean, maintainable C/C++ code and debug firmware on real hardware
• Create and maintain technical documentation and run unit and integration tests
• Support QA engineers during validation and troubleshooting
• Take part in sprint planning, estimation and customer communication
• Work with architects, security specialists and compliance engineers and follow engineering best practices

Required profile

• At least 4 years of commercial experience in embedded software development with C/C++
• Strong expertise with STM32 and ARM Cortex-M architectures
• English at upper-intermediate level or higher
• Strong debugging skills on real hardware, independent work and good communication in distributed teams

Required skills

• STM32, ARM Cortex-M, FreeRTOS or Zephyr RTOS
• UART, I2C, SPI and Wi-Fi; MQTT, DNS, DHCP, mDNS, TCP/IP, UDP
• Secure boot, OTA updates, checksums and firmware validation
• Plus: camera integration, face recognition, FatFS/LittleFS, lwIP, fluidics control, FPGA or ASIC experience

What we offer

• Diverse domains and businesses, variety of technologies
• Health and legal support, active professional community and continuous education
• Flexible schedule and remote work