Embedded Software Engineer (Remote)

Fuse Energy is an energy startup developing integrated generation, hardware, grid infrastructure, power trading, and distributed energy systems. The Embedded Software Engineer will design, build, and scale connected hardware systems, focusing on embedded connectivity, secure device communications, firmware updates, telemetry, and reliable fleet deployment.

Responsibilities

Develop and maintain connectivity across Ethernet, Wi-Fi, Thread, Zigbee and BLE

Build and optimise secure, reliable device messaging using protocols such as MQTT, CoAP, HTTP or WebSockets, and support device time synchronisation (NTP/PTP)

Contribute to secure boot flows, key and certificate provisioning, and hardware-backed device identity using TPMs or secure elements

Build and maintain signed firmware update pipelines, including OTA update and rollback, and support security best practices across the device lifecycle

Integrate devices with cloud IoT platforms and backend services, and improve telemetry, health monitoring and observability for deployed devices

Support reliable field operation, debugging fleet issues and improving resilience

Support testing and validation for safety, EMC, radio and related requirements, and help prepare test plans and certification artefacts

Work closely with firmware, hardware, power electronics, mechanical and software teams, contributing to design reviews, documentation and interface specifications

Preferred

low-power wireless (Thread, Zigbee, BLE); cloud IoT services on AWS, Azure or GCP; secure boot, TPMs, secure elements or hardware attestation; EMC/RF testing, antenna bring-up or factory test; awareness of standards such as IEC 62443, ETSI EN 303 645, ISO 27001 or GDPR; industrial, energy or other distributed device deployments

Low-Power Wireless

Cloud IoT Services

AWS

Azure

GCP

Secure Boot

TPMs

Secure Elements

Hardware Attestation

EMC Testing

RF Testing

Antenna Bring-Up

Factory Test

IEC 62443

ETSI EN 303 645

ISO 27001

GDPR

Industrial Deployments

Energy Deployments

Distributed Device Deployments

Benefits

Eligibility for equity

Biannual bonus scheme

Fully expensed tech to match your needs

Private health insurance

Breakfast and dinner allowance for office-based employees

Company

Full-stack energy company offering cheaper, greener electricity tariffs.

London, England, GBR

https://www.fuseenergy.com/

Founded in 2022

501-1000 employees

Qualifications

Bachelor's degree in Electrical Engineering, Computer Engineering, Computer Science or equivalent practical experience

2+ years building connected embedded products, or strong relevant industry/project experience

Good proficiency in C/C++ for embedded systems, with experience of RTOS environments such as Zephyr or FreeRTOS

Experience with Python for testing, tooling or automation

Solid understanding of device connectivity and networking fundamentals, including IP networking and common transport/application protocols

Experience implementing or supporting secure device communications using TLS, certificates or device provisioning workflows

Familiarity with firmware update systems, bootloaders or CI/CD workflows for embedded software

Practical debugging experience using lab and software tools such as logic analysers, protocol analysers, network sniffers or observability platforms

Strong problem-solving skills and the ability to work across hardware and software boundaries

Low-power wireless (Thread, Zigbee, BLE); cloud IoT services on AWS, Azure or GCP; secure boot, TPMs, secure elements or hardware attestation; EMC/RF testing, antenna bring-up or factory test; awareness of standards such as IEC 62443, ETSI EN 303 645, ISO 27001 or GDPR; industrial, energy or other distributed device deployments

Required skills

C, C++, Embedded Systems, Zephyr, FreeRTOS, Python, TLS and Device Provisioning, Firmware Update Systems, Bootloaders, MQTT, CoAP

Preferred skills

IP Networking

Experience

2+ years