Firmware Engineer

About the role

We build IoT and smart home products that ship to thousands of devices worldwide. You will work across the firmware stack - drivers, application logic, tooling, and production support - on products that run in real homes, not just on the bench.

This is a broad role. You will touch hardware bring-up one week and fleet debugging the next, and you will own the parts of the system you build.

What you need

• 4+ years firmware development, ideally in consumer electronics or IoT

• Strong C on resource-constrained MCUs, FreeRTOS or bare-metal

• A shipped product - at least one that reached volume manufacturing with your   firmware in it, and that you supported after launch

• Hardware fluency - reading schematics, serial protocols (UART, SPI, I²C), board bring-up, and working from a datasheet without hand-holding

• Debugging instinct - JTAG/SWD, logic analysers, scopes, and the patience to   chase a bug that reproduces once a week

• Tooling comfort - Git, CMake/Make, Python and bash for the scripts that make   development and production work

Nice to have

• Wireless connectivity - Wi-Fi, BLE, Zigbee, Thread, or Matter on embedded MCUs

• Cloud-connected devices - MQTT, TLS, device authentication, AWS IoT Core

• OTA firmware updates - A/B partitioning, image signing, rollback

• Power optimisation for battery-powered devices

• Certification experience (FCC, CE, SIRIM) or work with test houses

• Production line bring-up: test fixtures, factory provisioning, yield debugging

• Migrating firmware between MCU platforms

Our stack

• Silicon: ESP32, nRF52, STM32

• RTOS: FreeRTOS, bare-metal

• Cloud: AWS IoT Core, MQTT/TLS

• Languages: C, C++, Python, bash

• Platforms: Linux and Windows

• Tooling: Git, Make, CMake, JTAG/SWD, logic analysers, oscilloscopes

What you will actually do

• Design, build, and maintain firmware for IoT and smart home products

• Work across the full lifecycle - requirements, architecture, implementation,  testing, release

• Troubleshoot issues that span firmware and hardware, and figure out which side   they are on

• Improve existing architectures for robustness and scale

• Evaluate and migrate between MCU platforms as products evolve

• Build internal tools, test rigs, and production scripts

• Prototype new features and product concepts

• Review code and mentor junior engineers

• Work with hardware, QA, product, and manufacturing through to delivery

• Write design docs, test procedures, and release notes

How we work

• Structured code review. Pull requests, agreed coding standards, feedback that is about the code

• CI/CD built for embedded. Custom dev environment and build system - you will not spend your first month fighting toolchains

• Experienced team. Teammates with 10+ years in embedded who are invested in   knowledge sharing

• Scale. Thousands of units in homes worldwide. Your bugs are real, and so are your fixes

Measures of success

• Robust, stable, scalable firmware in the field

• Releases that hit their milestones

• Fewer firmware defects and support escalations over time

• Hardware, QA, and manufacturing teams who want to work with you again

How to apply

Include in your application:

1. One product you shipped, and a specific problem you personally solved on it

2. A link to inspectable code if you have any - GitHub, a driver you wrote, anything we can read