Fuse Energy
Embedded Software Engineer
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About Us
Fuse Energy is an energy startup on a mission to make energy abundant and affordable, fast. We combine first-principles thinking with cutting-edge technology to build a radically better energy system.
We've raised over $200M from top-tier investors including Balderton, Lakestar, Accel, Creandum, Lowercarbon, Ribbit, 20VC, Hummingbird, and Collaborative Fund, alongside strategic angels including Nico Rosberg and GPs behind Meta, Revolut, Spotify, and Uber.
We're building a fully integrated energy company: developing our own solar, batteries, and other generation projects, building our own hardware, improving and developing grid infrastructure, trading power in real time, using AI across the business, and installing distributed energy in homes. By selling directly to consumers, we cut out the middleman, lower costs, and pass the savings on to our customers.
Role: Embedded Software Engineer
We're looking for an Embedded Software Engineer to help design, build, and scale the connected hardware behind our fleet of distributed energy devices. This is a hands-on role spanning embedded systems, networking, device security, and fleet connectivity, from prototype through to deployment. You'll help build resilient connectivity, secure provisioning, and robust telemetry, working closely with firmware, hardware, and backend teams to deliver production-ready systems.
Responsibilities
- Connectivity and Networking: Develop and maintain connectivity across Ethernet, Wi-Fi, Thread, Zigbee, and BLE; build secure, reliable device messaging using MQTT, CoAP, HTTP, or WebSockets; support device time synchronization using NTP or PTP.
- Device Security and OTA Management: 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; support security best practices across the device lifecycle.
- Edge and Cloud Integration: Integrate devices with cloud IoT platforms and backend services; improve telemetry, health monitoring, and observability; support reliable field operation and debug fleet issues.
- Compliance and Testing: Support testing and validation for safety, EMC, radio, and related requirements; prepare test plans and certification artefacts; work with manufacturing through engineering and production validation cycles.
- Cross-Functional Collaboration: Work closely with firmware, hardware, power electronics, mechanical, and software teams; contribute to design reviews, technical documentation, and interface specifications.
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Requirements
- Bachelor's degree in Electrical Engineering, Computer Engineering, Computer Science, or equivalent practical experience.
- 2+ years of experience 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.
- Bonus: 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 distributed device deployments.
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Benefits
- Competitive salary and eligibility for equity.
- Biannual bonus scheme.
- Fully expensed tech to match your needs.
- Private health insurance.
- Breakfast and dinner allowance for office-based employees.
As we hire globally, benefits vary by location.
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