Startups

Lead Firmware Engineer

Sabi · San Francisco · Remote

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About Sabi

The first neural interface that transforms your thoughts into text. No typing. No voice. Just Think. Backed by Khosla.

About the role

You will architect and own the firmware for our wearable’s distributed-compute platform: a media and connectivity MCU running camera capture, audio runtime, Wi-Fi streaming, and onboard storage; a sensor-acquisition MCU running the biopotential signal chain and BLE streaming; and an always-on MCU enforcing power management, privacy, and thermal control.

What they're looking for

  • Must-Haves
  • 10+ years of embedded firmware engineering, with at least one shipped consumer product where you owned firmware architecture end-to-end
  • Deep expertise across embedded RTOSes and bare-metal ARM Cortex-M, with familiarity across at least two ecosystems (e.g., Zephyr, FreeRTOS, ESP-IDF, ThreadX, NuttX)
  • Hands-on experience hosting real-time DSP runtimes alongside wireless connectivity on resource-constrained MCUs — integrating algorithms owned by other teams
  • Strong background in multi-radio coexistence (Wi-Fi + BLE), low-power state-machine design, and OTA with safe rollback
  • Comfortable in the lab with JTAG/SWD, logic analyzers, and protocol sniffers — able to drive bring-up from first power-on through end-to-end functional demos
More about this role

We're a small team solving one of the hardest problems in human-computer interaction: a noninvasive wearable that turns thought into text, no surgery required.

By pairing ultra-high-density neural sensing with our Brain Foundation Model, we decode neural signals with a fidelity once reserved for implants. Our mission is to give a billion people a direct link between mind and machine - expanding how humans think, communicate, and create.

We are building a next-generation AI companion wearable powered by EEG/BCI technology. Our device reads and responds to neural signals in real time, creating a deeply personal experience that adapts to each user. This is not another productivity tool or a gadget — it is a new category of technology built around human potential.

We are backed by strong investors, moving fast, and assembling a world-class team to bring this to market. If you thrive at the frontier of what’s possible and want to build something that genuinely changes how people interact with their own minds, we want to talk to you.

You will architect and own the firmware for our wearable’s distributed-compute platform: a media and connectivity MCU running camera capture, audio...

Read the full posting on Sabi's site ↗

Hardware

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