Hardware Electrical Engineer - Vietnam

Title: Hardware Electrical Engineer (PEMF/VNS)

Location: Vietnam (Hanoi or Ho Chi Minh City)

Employment: Full-time

Role overview

We are building a closed-loop neurostimulation alpha prototype integrating EEG-driven control with peripheral stimulation modalities (PEMF and tVNS). You will lead the hardware design and bring-up of the stimulation drivers, ensuring safety, reliability, and integration with our software control loop.

Key responsibilities

- Design and bench-validate a high-current PEMF driver capable of pulsed magnetic field generation (frequency, duty cycle, rise/fall characteristics per spec).

- Design and bench-validate a current-controlled tVNS output stage with compliance voltage, current limits, and isolation per safety best practices.

- Select components (MOSFETs, gate drivers, coils, PSU, current sense, isolation, protection) and prepare BoM with alternates and lead-time mitigation.

- Develop Rev A control PCB (PEMF + VNS) from schematic to layout, DFM checks, and release for fab/assembly.

- Implement safety measures: HW interlocks, emergency stop, fusing, TVS/ESD, overcurrent/overvoltage protection; collaborate with SW for software limits.

- Bring-up and debugging: oscilloscope measurements, load emulation, thermal/EMI considerations, iterative tuning with SW to meet latency targets.

- Documentation: schematics, layout notes, test plans, bench reports, and design rationale.

- Collaborate across time zones with SW, PM, and manufacturing on schedule and risk mitigation.

Minimum qualifications

- B.S. or higher in Electrical/Electronics Engineering (or equivalent experience).

- 5+ years in power electronics/analog design, including pulsed power or motor/solenoid/coil driving.

- Hands-on experience with high-current MOSFET stages (50200 V class), gate drivers, snubbers, and layout for fast edges.

- Experience designing precision current sources (e.g., Howland/modified current pump) and bi-phasic/mono-phasic stimulation paths.

- Comfort with isolation techniques (isolated DC-DC, digital isolators), patient leakage and basic medical safety practices.

- Proficient with schematic/layout tools (e.g., Altium, KiCad) and lab equipment (oscilloscope, function generator, e-loads).

- Strong documentation and communication skills.

Preferred qualifications

- Experience with neuro/biomedical stimulation systems (TENS/tVNS, FES, implantable/external stimulators) or EMC for medical devices.

- Familiarity with EEG systems and noise mitigation during stimulation.

- Vendor/supplier engagement in APAC; building BoMs with alternates and lifecycle awareness.

What success looks like (first 90 days)

- Week 23: Component shortlist and initial BoM with alternates and lead times.

- Week 46: PEMF and tVNS breadboard prototypes validated on bench with dummy loads and safety checks.

- Week 68: Rev A PCB design complete and sent for fab/assembly.

- Week 912: Integrated alpha prototype dry run, with documented test data and iteration plan.

How to apply

Please send CV and a short note about your relevant PEMF/VNS or pulsed power experienceto Ms Huyen at [Confidential Information]