Remote IoT Embedded Firmware Engineer

Octopus Energy Group; Greater London; Remote; GBP 70,000 - 100,000; Full time

Job summary

Octopus Energy Group is seeking an Embedded Firmware Engineer specializing in IoT to shape software for next‑generation Smart Home Wi‑Fi devices. You’ll work with a cross‑functional hardware team, guiding firmware from requirements through hands‑on development to field deployment.

The role is mostly remote with occasional travel to London and Slough. You’ll own IoT features, write robust code, review work, and collaborate across teams to deliver high‑quality products.

Qualifications

• C programming for real-time on constrained MCUs with vendor APIs.
• RTOS experience (FreeRTOS) for embedded systems.
• Scripting with Python or Bash and Git.
• Ability to read schematics and datasheets for debugging.
• Knowledge of SPI, I2C, UART, and network basics.
• IoT security: TLS, secure boot, encrypted flash.
• Board bring-up, validation, and debugging with JTAG/SWD.
• Degree: B.S. in CS or Electronic Engineering or related field.

Responsibilities

• Write well-structured, testable firmware for Octopus’ connected devices.
• Work in a cross‑functional team on key IoT products.
• Own IoT products and features; deliver high quality modular code.
• Manage tickets with hardware and software teams.
• Collaborate with customer-facing teams to fix bugs and add features.
• Participate in code reviews and uphold high standards.
• Work across projects to meet deadlines.
• Willingness to learn new technologies.

Skills

C programming

RTOS (FreeRTOS)

Python

Git

Schematic reading

Networking basics

IoT security concepts

JTAG/SWD debugging

Board bring-up

ESP32/ESP-IDF

OTA firmware updates

Cloud IoT (AWS IoT)

Education

B.S. in Computer Science, Electronic Engineering, or related field

Tools

ESP-IDF

JTAG/SWD

Oscilloscope

Multimeter

Logic analyzers

SPI/I2C/UART

Job description

Octopus Energy Group is seeking an Embedded Firmware Engineer specializing in IoT to shape software for next‑generation Smart Home Wi‑Fi devices. You’ll work with a cross‑functional hardware team, guiding firmware from requirements through hands‑on development to field deployment.

The role is mostly remote with occasional travel to London and Slough. You’ll own IoT features, write robust code, review work, and collaborate across teams to deliver high‑quality products.