Hardware & Embedded Engineer

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 the transmit front end, including a high-voltage pulser and transmit/receive switching that protects the receive path. Build the receive front end, including variable-gain amplification, anti-alias filtering, and high-speed ADC integration. Bring up low-power MCU systems and, where useful, small FPGA blocks for transmit timing, gain control, sampling, buffering, and synchronization. Write embedded C/C++ firmware for timing-critical acquisition, peripheral bring-up, ADC interfacing, power states, and BLE/Wi-Fi communication. Design compact multilayer wearable PCBs that keep high-voltage, analog, RF, and digital domains cleanly separated. Optimize battery operation through efficient regulation, duty-cycling, throughput management, and careful latency/power tradeoffs. Build and test the wireless and host-side 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, with exceptional new graduates considered when they have strong project, startup, or research work. 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, including grounding, return paths, and high-voltage/analog isolation. Strong embedded C/C++ on microcontrollers, including peripheral bring-up, timing-critical control, ADC interfacing, and BLE or Wi-Fi stacks. Comfort moving quickly from design to bench validation, using oscilloscopes, logic analyzers, spectrum tools, and practical measurement to find the truth. 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 ultrasound systems, piezoelectric transducers, medical devices, or other regulated hardware. High-voltage or high-speed analog and mixed-signal design experience. Low-power, battery-powered system design with power management and duty-cycling. Ultrasound signal processing experience, such as envelope detection, A-mode, or M-mode. 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.