Lead Embedded systems engineer

Brightsmith are currently working with a scaling heatpump company, who have built a software platform for heat pumps, with plans to pivot into developing their own hardware. The goal is to better control the user experience, as integrating with existing brands has proven restrictive. They optimize heat pumps to run efficiently based on the user's energy tariff and home dynamics, and are now moving towards embedding this experience natively in their own branded heat pump units.

This role will lead the pivot by integrating their software, with a new hardwear technology.

Responsibilities

• Own the full embedded stack: firmware architecture, hardware integration, and device lifecycle (provisioning, OTA, secure boot, watchdogs)
• Build communication layers between devices, heating systems, and the cloud (e.g. Modbus RTU, MQTT)
• Design and optimise wireless communication between hub and thermostat, with a strong focus on battery life
• Implement embedded UI for the thermostat display with a focus on usability and visual quality
• Ensure robust offline functionality and resilient system behaviour
• Implement safety constraints to guarantee reliable operation in all conditions
• Select and integrate hardware components including compute modules, radios, and transceivers

Experience Required

• Proven experience shipping a consumer embedded product (MCU + display)
• Strong C/C++ skills
• Experience with embedded graphics frameworks (e.g. LVGL or similar)
• Familiarity with communication protocols (Modbus, UART, SPI, MQTT)
• Experience with OTA updates, secure boot, and connectivity management
• Strong product mindset, including attention to UI/UX details
• Comfortable owning the full embedded stack in a small, high-impact team

If you are interested in hearing more details please reach out at h.lowther@brightsmithgroup.com or apply below.