Senior Firmware Engineer, Fuse Energy

Salary not provided

+ Biannual bonus scheme and equity sign-on bonus

Docker

C++

Git

Senior and Expert level

London

Renewable energy supplier

Be an early applicant

Renewable energy supplier

101-200 employees

B2BEnergySustainabilityManufacturing

Be an early applicant

Salary not provided

+ Biannual bonus scheme and equity sign-on bonus

Docker

C++

Git

Senior and Expert level

London

101-200 employees

B2BEnergySustainabilityManufacturing

Company mission

To make cheap renewable energy accessible for everyone.

Job

Company

Role

Who you are

5+ years of experience in embedded systems or firmware engineering
Strong proficiency in C, with experience writing firmware for microcontrollers
Hands-on experience with common MCU peripherals: SPI, I2C, UART, DMA, timers, ADCs, Flash, CAN, etc
Experience working with real-time systems and embedded development toolchains (e.g., GNU, IAR)
Familiarity with version control and tooling (e.g., Git, Docker, CI pipelines)
Ability to work with hardware debugging tools (oscilloscopes, logic analysers, JTAG/SWD)

Desirable

Experience with power electronics or grid-connected converter controls
Knowledge of control systems and digital signal processing (FIR, IIR, FFT)
Familiarity with embedded bootloaders, memory maps and linker scripts Experience with board bring-up and low-level hardware/software integration

What the job involves

Develop low-level firmware and drivers for microcontrollers and embedded peripherals (SPI, I2C, UART, DMA, ADC, etc.)
Design and implement real-time control software and embedded algorithms for energy devices
Write, test, and debug embedded C/C++ firmware running on bare-metal or RTOS-based systems
Collaborate with hardware, systems and controls teams to define firmware requirements and test plans
Participate in code reviews, write documentation and contribute to the continuous improvement of firmware practices
Assist in board bring-up, profiling and debugging using tools like oscilloscopes, JTAG/SWD, and logic analysers
Implement and maintain bootloaders, linker scripts and firmware deployment pipelines

Salary benchmarks

Our take

Traditional energy companies often prioritise profit over sustainability, leading to high prices and reliance on fossil fuels. Fuse Energy aims to disrupt the energy market by offering lower prices and cleaner energy options.

It does this by building solar farms that ensure access to cheap, renewable energy. Its data science team forecasts energy demand and buys additional power from gas and electricity markets, providing a mix of renewable and traditional sources.

With €76M in annualised revenue and 7x year-on-year growth, it now supplies 50,000 homes and plans to expand into Ireland, Europe, and the US. Backed by new AI features and with investments into clean energy, Fuse is truly shaping up to redefine the future of home energy.

Freddie

Company Specialist at Welcome to the Jungle

Insights

Top investors

Trustpilot (4.7)

Company

Funding (last 2 of 4 rounds)

Dec 2025

$70m

LATE VC

Jul 2025

$10m

EARLY VC

Total funding: $122m

Company HQ

Westminster, London, UK

Leadership

Alan Chang

(Co-Founder & CEO)

Previously worked at Revolut for over 7 years in various roles, including SVP of Revenue and Operations, and CRO.

Charles O.

(Co-Founder & COO)

Previously an Investor at Mosaic. They also worked at Revolut in Special Projects.

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