Electrical Engineer (Wearable Hardware)

Location: China; onsite

Salary: CN¥80K–CN¥100K, plus equity

Company

hirify.global is a Y Combinator-backed research lab building custom hardware and learned models of human embodied intelligence for robotics and scientific research.

What you will do

• Own electrical design from schematics through board bring-up and production-ready DFM.
• Design custom carrier boards for ARM compute modules and route high-speed interfaces including MIPI CSI-2, SerDes, USB 3.x, PCIe, and UFS.
• Develop rigid-flex and high-density PCBs with controlled impedance, low crosstalk, and EMI performance.
• Design power delivery networks, battery management, fuel gauging, runtime estimation, and power sequencing for wearable loads.
• Integrate multi-camera arrays and inertial, magnetic, acoustic, and environmental sensors.
• Coordinate firmware bring-up, diagnose signal integrity, power integrity, and timing issues, and support EMC compliance validation.

Requirements

• Strong PCB design experience with Altium, Cadence Allegro, or KiCad.
• Experience with high-speed digital design, differential pair routing, impedance control, and PCB stack-ups.
• Experience with SI/PI simulation and validation.
• Experience designing compute module or SoM carrier boards.
• Practical lab debugging skills using oscilloscopes, logic analyzers, and network analyzers.
• Ability to work onsite in China.

Nice to have

• Multi-camera array design supporting three or more concurrent cameras.
• High-speed SerDes routing and ARM SoC carrier work with Qualcomm, NXP, or similar platforms.
• Wearable or body-worn product experience.
• Hot-swap power design.
• FCC, CE, or RoHS compliance and DFM handoff experience.

Culture & Benefits

• Lean, deeply technical research environment backed by Y Combinator.
• Fast iteration on technically difficult hardware and embodied-intelligence problems.
• Meaningful ownership of systems from the first day.
• Designed boards are deployed in real wearable products used by people.
• Equity is included in the compensation package.