Embedded Firmware Engineer

Octopus are pioneering new smart home technology and we are looking to continue to grow our highly passionate team. We’re looking for a skilled Embedded Firmware Engineer specialising in IoT products to shape the software driving our next generation of Smart Home Wi-Fi connected products. Working within our multi-talented hardware team, you’ll help build innovative, energy-saving smart devices that keep homes warm and lower energy bills. Collaborating across platform and app engineering teams, you will drive the firmware lifecycle from taking initial requirements to hands-on development and ongoing field deployment. This role can be majority remote with occasional travel to London and Slough! If you want to be a part of the next big thing - keep reading!

Write well structured, testable, efficient and maintainable software for Octopus’ connected devices Work within a dedicated cross-functional team on key products for our customers or our internal teams. Take ownership of our IoT products and features, ensuring delivery of high quality code that is modular and maintainable Manage tickets and development efforts with the hardware and software teams Work closely with other customer facing and software teams to investigate and resolve bugs and implement new features Participate in code reviews and ensure code is meets a high standard Work flexibly across projects to meet challenging, customer-driven deadlines Willingness to learn new technologies and skills as require

Proficiency in C for real-time operation on highly constrained microcontrollers and custom hardware using official vendor APIs Hands-on experience with Real-Time Operating Systems (RTOS), such as FreeRTOS Fluency in scripting languages (e.g., Python, Bash) and version control using Git Ability to read schematics and data sheets for hardware and software debugging Practical knowledge of common serial protocols (e.g., SPI, I2C, UART, RS232, Modbus) and networking fundamentals (e.g., MAC, IP, TCP, TLS, DHCP) Familiarity with IoT security technologies, such as secure boot, encrypted flash, TLS, and public key cryptography Hands-on experience with board bring-up, design validation, code optimization, and debugging via JTAG/SWD or test equipment (e.g., oscilloscopes, multimeters, logic analyzers) B.S. in Computer Science, Electronic Engineering, or a related field

Hands-on experience with the ESP32 family and ESP-IDF Background building IoT products with cloud platforms (e.g., AWS IoT) Experience implementing OTA firmware updates within automated build environments Exposure to short-range wireless protocols including BLE, Wi-Fi, or Zigbee Proven experience delivering connected IoT devices within complex, multi-system ecosystems