Job Description

Lumius is building fast, smart, accessible 3D ultrasound systems that make real-time volumetric imaging more practical and intuitive. As a Hardware & Embedded Engineer, you will help with the electronics behind our compact ultrasound acquisition platform.

What you'll work on

Design and build the the transmit/receive front end, including a high-voltage pulser and transmit/receive switching that protects the receive path.
Write embedded C/C++ firmware for timing-critical acquisition, peripheral bring-up, ADC interfacing, power states, and BLE/Wi-Fi communication.
Design compact multilayer PCBs and ICs for different ultrasound systems.
Build and test the data path that streams ultrasound data reliably from device to application.
Debug across the full hardware loop: schematic, layout, firmware, measurement, signal integrity, power, and prototype iteration.

Who we're looking for

BS or MS in Electrical Engineering or a related field, or equivalent hands-on experience.
3+ years building real hardware, especially on ultrasound systems.
Depth in at least one of RF/analog hardware, embedded firmware, or PCB design, with the desire to grow across the full system.
Hands-on mixed-signal PCB design experience in Altium or similar tools.
Strong embedded C/C++ on microcontrollers.
Comfort moving quickly from design to bench validation, using oscilloscopes, logic analyzers, spectrum tools, and practical measurement .
A high-ownership builder mindset: you can make progress in ambiguity, communicate clearly, and iterate without waiting for hand-offs.

Good to have

Experience with CMUTs, PMUTs, and piezoelectric transducers.
Ultrasound signal processing.
Prior experience at an early-stage startup or in a small, high-ownership engineering team.

Why join Lumius

Work on the core hardware for a new 3D ultrasound platform at the moment when the architecture is still being shaped.
Own an unusually broad technical surface area across electronics, firmware, power, wireless, and signal acquisition.
Collaborate closely with a small founder-led team with deep ultrasound and biomedical engineering expertise.
Help turn a working medical-device prototype into a compact, reliable platform that can support real clinical workflows.

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About Lumius

Ultrasound today is still mostly 2D. Clinicians have to imagine the 3D anatomy in their head while also moving the probe at the same time. This makes procedures like vascular access hard to learn and perform consistently, especially for beginners. ~50% fail on their first attempt. Hospitals also spend millions each year on 2D ultrasound training. Meanwhile, existing 3D ultrasound devices can cost >10× as much. Lumius is building fast, smart, and accessible 3D ultrasound systems to eliminate this 2D guesswork. Our technology shows a clear, real-time 3D view of what’s inside the body. It works over a large volume, not just a thin slice. The device is also affordable, compact, and portable. We are starting with vascular access, especially central line. Future use cases include blood clot detection, tumor diagnosis, and biopsy guidance. Our long-term vision is a universal 3D ultrasound platform that brings easy-to-use, real-time imaging to a wide range of clinical and eventually consumer applications.

Hardware & Embedded Engineer