Principal Application Engineer

Job Title

Principal Application Engineer

Role Summary

Senior technical contributor on the Performance Computing Power Applications team focused on power-management solutions for infrastructure and AI servers. Collaborate with marketing, device engineering, firmware, IC design, and other application teams to define, validate, and deliver digital multiphase power solutions.

Experience Level

Senior-level — requires 12+ years of experience in the power management industry.

Responsibilities

Primary responsibilities include customer-facing validation, system-level support, and cross-functional enablement:

• Travel to customer sites to debug, validate, and integrate digital multiphase PWM controller products.
• Work with customers to diagnose and resolve complex power-management issues.
• Support product marketing by mapping customer requirements to detailed technical solutions.
• Contribute to system validation of modules, vertical/lateral power stages, and controller products.
• Provide detailed design inputs to engineering teams and verify designs at system level.
• Produce technical collateral such as datasheets, performance reports, and application notes.
• Train and mentor other application and field engineers to broaden product support capability.

Requirements

Must-have technical skills and experience:

• Minimum 12+ years in the power management industry.
• Experience supporting MOSFETs, GaN devices, and power stage design.
• Experience with digitally enabled power management products and digital multiphase controllers.
• Strong understanding of control-loop theory as applied to power converters.
• Hands-on experience with multiphase DC/DC converters and mixed-signal IC/system integration.
• Proficiency using lab equipment including network analyzers, oscilloscopes, and waveform generators.
• Ability and willingness to travel to customer sites in Asia and the United States.

Nice-to-have:

• Experience in infrastructure or AI server power subsystems.

Education Requirements

Bachelor of Science in engineering (electrical engineering or power electronics preferred); Master’s degree preferred. The posting specifies these degrees as the expected academic background.

About the Company

Company: Renesas

Headquarters: Hitachinaka, Japan

Renesas is a global leader in embedded semiconductor solutions, providing high-quality products across automotive, industrial, infrastructure, and IoT sectors. With over 22,000 employees in more than 30 countries, the company focuses on scalable solutions that enhance user experience and drive innovation while committed to sustainability and energy efficiency.