Embedded Firmware Engineer
Octopus Energy Group20 hours ago
Remote, United Kingdom +2 moreMid Level
Responsibilities
- Develop structured, testable, efficient, and maintainable firmware for connected IoT devices.
- Own IoT products and features from initial requirements through hands-on development and field deployment.
- Collaborate with hardware, software, platform, app, and customer-facing teams to deliver features and resolve bugs.
- Perform board bring-up, design validation, code optimization, and debugging using JTAG/SWD and test equipment.
- Participate in code reviews and manage tickets and development efforts across hardware and software teams.
Requirements
- Proficiency in C for real-time operation on constrained microcontrollers and custom hardware using vendor APIs.
- Hands-on experience with real-time operating systems such as FreeRTOS.
- Fluency in scripting languages such as Python or Bash and version control with Git.
- Ability to read schematics and data sheets for hardware and software debugging.
- Knowledge of serial protocols including SPI, I2C, UART, RS232, and Modbus, plus networking fundamentals including MAC, IP, TCP, TLS, and DHCP.
- Familiarity with secure boot, encrypted flash, TLS, and public key cryptography.
- Hands-on experience with board bring-up, design validation, optimization, and debugging using JTAG/SWD, oscilloscopes, multimeters, or logic analyzers.
- Bachelor of Science degree in Computer Science, Electronic Engineering, or a related field.
- Preferred experience includes ESP32, ESP-IDF, AWS IoT, OTA firmware updates, automated build environments, BLE, Wi-Fi, Zigbee, and delivering connected IoT devices in complex multi-system ecosystems.
Benefits
- Majority-remote work arrangement with occasional travel to London and Slough.
- Flexible, autonomy-oriented culture with learning opportunities and an employee benefits program.
- Interview accommodations and a recruitment process that usually takes up to four weeks, with flexibility where possible.
About Octopus Energy Group
Octopus Energy Group supplies retail electricity and gas, invests in renewable generation, and licenses its Kraken software platform to utilities and energy companies. Its businesses span home energy, electric‑vehicle services, flexibility management, and SaaS for energy retailers and networks. Founded in 2015 and headquartered in London, the privately held company operates across multiple countries, including the UK, with Kraken licensed by major utilities globally.