Senior IoT Firmware Engineer – Cambridge (On-site)

Smart Component Technologies Ltd; Cambridge; On-site; GBP 50,000 - 55,000; Full time

Benefits offered by this job

Company pension

On-site parking

Private medical insurance

Job summary

Smart Component Technologies Ltd is seeking an experienced embedded firmware engineer in Cambridge to develop and maintain firmware for IoT devices using C/C++ and Python. You will work closely with hardware engineers to ensure seamless firmware–hardware integration and scalable protocols.

The role requires 5+ years in embedded firmware, MQTT/LoRaWAN experience, and familiarity with AWS IoT Core. Cambridge on-site work, with a strong emphasis on testing, debugging, and code quality.

Qualifications

• Bachelor's or Master's in CS/EE or related field.
• 5+ years of production-quality embedded firmware development.
• Proficiency in C/C++ and Python.
• Experience with STM32 microcontrollers and ARM Cortex-M.
• Familiarity with IoT protocols MQTT and LoRaWAN.
• Experience with AWS IoT Core.
• Excellent debugging skills for hardware and firmware.
• Experience with Git and static code analysis tools.
• Strong problem-solving and communication skills.
• Experience with firmware test approaches (unit/integration/on-hardware).
• Experience decoding binary payloads.

Responsibilities

• Contribute to firmware development and share knowledge with the team.
• Design, develop, and maintain embedded firmware for IoT devices using C/C++ and Python.
• Collaborate with hardware engineers for firmware-hardware integration.
• Implement and optimise MQTT and LoRaWAN communication.
• Integrate firmware with AWS IoT Core.
• Analyse and debug complex hardware and firmware issues.
• Maintain codebases and improve documentation and code quality.
• Apply version control, CI/CD, and static analysis for stability.
• Explore new technologies to improve performance and functionality.
• Maintain firmware test regime and validation ahead of releases.
• Build and decode payloads into structured, validated data.
• Interrogate device data to validate firmware behaviour.

Skills

C/C++

Python

STM32 / ARM Cortex-M

IoT protocols (MQTT, LoRaWAN)

Cloud integration AWS IoT Core

Debugging hardware/firmware

Git

CI/CD

Teamwork / communication

Firmware testing

Education

Bachelor's or Master's in CS/EE or related field

Tools

STM32 toolchain

AWS IoT Core

LoRaWAN stack

Git

Job description

Smart Component Technologies Ltd is seeking an experienced embedded firmware engineer in Cambridge to develop and maintain firmware for IoT devices using C/C++ and Python. You will work closely with hardware engineers to ensure seamless firmware–hardware integration and scalable protocols.

The role requires 5+ years in embedded firmware, MQTT/LoRaWAN experience, and familiarity with AWS IoT Core. Cambridge on-site work, with a strong emphasis on testing, debugging, and code quality.