Power Architect for Next‑Gen Portable Devices

Hark; San Jose (CA); On-site; USD 120,000 - 300,000; Full time

Job summary

Hark is seeking a Hardware Engineer to own the end-to-end power architecture of next-generation portable devices. You will ensure safety, efficiency, and longevity, from battery chemistry choices to PMIC register tuning and power-model development.

Responsibilities include defining the PDN, validating Li-ion/Li-poly cells, building power models for various usage scenarios, and designing USB-C PD or wireless charging with thermal stability.

Qualifications

• BS or MS in Electrical Engineering is required.
• Hands-on experience integrating and configuring high-performance PMICs (e.g., Qualcomm, TI, Nordic, or Maxim).
• Deep understanding of Battery Management Systems (BMS), including fuel gauging algorithms and SoC estimation.
• Expert-level skills using power analyzers, electronic loads, and high-resolution current sensing tools.
• Strong understanding of PCB layout for power and high-current paths, minimizing losses.

Responsibilities

• Define the power distribution network (PDN) and select key components including PMICs, chargers, fuel gauges and protection ICs.
• Lead the selection, characterization and safety validation of Li-ion/Li-poly battery cells.
• Develop detailed power models to predict battery life across idle, peak load and standby scenarios.
• Design and optimize wired (USB-C PD) and/or wireless charging circuits with emphasis on thermal stability and fast charging.
• Conduct bench-level efficiency measurements for DC-DC converters (Buck, Boost, LDO) and optimize firmware for peak performance.
• Develop power model and management strategies to prevent system brownouts.
• Ensure power designs meet global safety standards (UL, IEC, UN38.3) and EMI/EMC requirements.

Skills

PMIC integration

BMS knowledge

Power measurement

PDN design

Thermal awareness

Education

BS or MS in Electrical Engineering

Tools

Power analyzers

Electronic loads

Current sense tools

SPICE

MATLAB

Job description

Hark is seeking a Hardware Engineer to own the end-to-end power architecture of next-generation portable devices. You will ensure safety, efficiency, and longevity, from battery chemistry choices to PMIC register tuning and power-model development.

Responsibilities include defining the PDN, validating Li-ion/Li-poly cells, building power models for various usage scenarios, and designing USB-C PD or wireless charging with thermal stability.