Senior Power Electronics Lead for High-Power Inverter Systems

Sapphire Technologies; Cypress (CA); On-site; USD 144,000 - 195,000; Full time

Benefits offered by this job

401(k) retirement plan with company"

Competitive benefits package

Job summary

Sapphire Technologies seeks a Lead Power Electronics Engineer to architect, develop, validate, and launch advanced inverter systems for high-speed rotating machinery. You will drive the system design for a major new data-center platform integrating high-power electronics, speed machines, liquid cooling, and precision controls, with hands-on lab work and notable travel.

The role combines technical leadership with system-level optimization, cost reduction, and manufacturing readiness, partnering

Qualifications

• Master's degree in Electrical Engineering with emphasis in power electronics or equivalent
• 8+ years of industry experience developing medium- or high-power with liquid-cooled power, inverters, motor drives, converters, or related industrial electronics.
• 3+ yrs with technical leadership and cross-functional communication skills.
• Demonstrated experience defining power electronics architecture and leading products through design, validation, certification, and production.
• Strong understanding of three-phase inverter systems, modulation methods, semiconductor switching behavior, protection, and power quality.

Responsibilities

• Serve as Sapphire's primary technical authority for the inverter system.
• Translate system and customer requirements into inverter architecture, technical specifications, and interface requirements.
• Lead topology selection and trade studies involving semiconductor technology, switching frequency, losses, and harmonic performance.
• Lead the design and validation of power stages, gate drives, DC-link systems, filters, sensing, protection circuits, and high-power interconnections.
• Define and manage electrical, mechanical, and thermal interfaces, including water-cooled cold plates, coolant requirements, and temperature limits.
• Drive cost reduction through architecture optimization, supplier engagement, and design for manufacturing.
• Coordinate with certification engineers and external bodies to ensure compliance early in design.
• Support EMC/EMI, electrical safety, environmental and UL/IEC certification testing.
• Define production-test requirements and support NPI, supplier qualification, and manufacturing scale-up.
• Mentor engineers and manage work by contractors and external partners.

Skills

Power electronics

Liquid-cooled power

Inverters and motor drives

System architecture

Cross-functional leadership

MATLAB/Simulink

High-voltage interfaces

PCB/system integration

SiC-based inverters

Education

Master's degree in Electrical Engineering with emphasis in power electronics

Tools

Altium

LTspice

PLECS

Job description

Sapphire Technologies seeks a Lead Power Electronics Engineer to architect, develop, validate, and launch advanced inverter systems for high-speed rotating machinery. You will drive the system design for a major new data-center platform integrating high-power electronics, speed machines, liquid cooling, and precision controls, with hands-on lab work and notable travel.

The role combines technical leadership with system-level optimization, cost reduction, and manufacturing readiness, partnering