OverviewFuse Energy is a forward-thinking renewable energy startup with a mission to deliver a terawatt of renewable energy — fast. We combine first-principles thinking with cutting-edge technology to build a radically better energy system. We raised $100M from top-tier investors including Multicoin, Balderton, Lakestar, Accel, Creandum, Lowercarbon, Ribbit, Box Group and strategic angels such as Nico Rosberg and other GPs behind Meta, Revolut, Spotify, Uber and more.

We are creating a fully integrated energy company: developing solar, wind and hydrogen projects, real-time power trading, and distributed energy installations. By selling directly to consumers, we cut out the middleman, lower costs, and pass savings to customers.

We are also building the Energy Network, a decentralised platform of smart devices that rewards users in Energy Dollars for electrifying their homes, shifting usage to off-peak hours, and helping balance the grid. This network strengthens grid stability — a foundation for scaling AI data centers and other energy-intensive industries.

Responsibilities

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

Requirements

2+ 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)

Bonus

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

Benefits

Competitive salary and an equity sign-on bonus

Biannual bonus scheme

Fully expensed tech to match your needs

Paid annual leave

Breakfast and dinner for office-based employees

Details

Seniority level: Entry level

Employment type: Full-time

Job function: Other

Industries: Services for Renewable Energy

Location: London, England, United Kingdom

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