Embedded Software Engineer

Salary: £63,000 - 103,000 per year

Requirements:

• Bachelors degree in Electrical Engineering, Computer Engineering, Computer Science, or equivalent practical experience.
• 5+ years of experience building connected embedded products, or strong relevant industry/project experience.
• Good proficiency in C/C++ for embedded systems, with experience working in 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.
• Experience with low-power wireless technologies such as Thread, Zigbee, or BLE is a plus.
• Familiarity with cloud IoT services on AWS, Azure, or GCP is a plus.
• Exposure to secure boot, TPMs, secure elements, or hardware attestation is a plus.
• Experience with EMC/RF testing, antenna bring-up, or factory test processes is a plus.
• Awareness of relevant cybersecurity or privacy standards such as IEC 62443, ETSI EN 303 645, ISO 27001, or GDPR is a plus.
• Experience working on industrial, energy, or other distributed device deployments is a plus.

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.
• Support reliable device time synchronisation using NTP or PTP.
• Contribute to secure boot flows, key and certificate provisioning, and hardware-backed device identity using TPMs or secure elements.
• Help build and maintain signed firmware update pipelines, including OTA update and rollback mechanisms.
• Support security best practices across the device lifecycle, including vulnerability management and secure provisioning.
• Integrate devices with cloud IoT platforms and backend services.
• Define and improve telemetry, health monitoring, and observability for deployed devices.
• Support reliable operation of connected devices in the field, including debugging fleet issues and improving resilience.
• Support testing and validation for safety, EMC, radio, and related product requirements.
• Help prepare test plans, certification artefacts, and validation documentation.
• Work with manufacturing and cross-functional teams through engineering and production validation cycles.
• Work closely with firmware, hardware, power electronics, mechanical, and software teams to deliver production-ready devices.
• Contribute to design reviews, technical documentation, and interface specifications.
• Share knowledge and contribute to engineering best practices across connectivity, embedded systems, and device security.

Technologies:

• AWS
• Azure
• Backend
• CI/CD
• Cloud
• Embedded
• Ethernet
• Firmware
• FreeRTOS
• GCP
• Hardware
• HTTP
• IoT
• Support
• MQTT
• Network
• Python
• Security

More:

We are Fuse Energy, a forward-thinking renewable energy startup on a mission to deliver a terawatt of renewable energy quickly. We are building a fully integrated energy company spanning solar and wind development, real-time power trading, and distributed energy installations, and we sell directly to consumers to reduce costs and pass savings on to customers. We have raised $210M from leading investors including Multicoin, Balderton, Lakestar, Accel, Creandum, Lowercarbon, Ribbit, Box Group, and strategic angels. We are hiring an Embedded Software Engineer to help design, build, and scale the connected hardware powering our Energy Network, working hands-on across embedded systems, networking, device security, fleet connectivity, firmware, hardware, and backend teams. We offer a competitive salary and equity sign-on bonus, biannual bonus scheme, fully expensed tech to match your needs, paid annual leave, and breakfast and dinner allowance for office-based employees.

last updated 36 week of 2026