Principal Applications Engineer

Job Title

Principal Applications Engineer

Role Summary

Design and validate high-density power solutions and support their deployment for AI and data-center customers. Responsibilities include IC and system-level circuit debug, creating datasheets and application notes, developing reference circuits, and delivering technical training and customer support.

The role works cross-functionally with design engineers, field applications, marketing, and manufacturing to define power modules/ICs and ensure successful product delivery.

Experience Level

Senior — Principal-level. Specific years of experience not stated in the posting.

Responsibilities

Primary responsibilities include:

• Define and design power modules and ICs for AI and data-center applications.
• Design high-density converters including 800V isolated DC-DC, 48V intermediate-bus, and 12V multiphase buck converters.
• Perform IC- and system-level circuit debugging, validation, and optimization.
• Develop application reference circuits and system-level power management solutions for HPC, networking, server, and cloud markets.
• Write and maintain datasheets, application notes, and technical documentation.
• Provide application support and technical training to customers and field application engineers.
• Collaborate with cross-functional teams to oversee manufacturing and ensure product delivery.

Requirements

Key qualifications — must-haves first, then preferred items.

• Must-have: Hands-on experience with switch-mode power conversion (DC-DC, AC-DC, inverters, or power-management IC applications).
• Must-have: Demonstrated design, validation, debug, or optimization experience with high-density DC-DC converters, 800V isolated DC-DC, 48V intermediate-bus architectures, or multiphase buck converters for CPU/GPU power delivery.
• Must-have: Ability to develop and communicate reference designs, test results, application guidance, and technical documentation.
• Must-have: Strong written, presentation, and cross-functional communication skills in English; comfortable collaborating with customers and internal teams.
• Must-have: Self-motivated, hands-on problem solver.
• Preferred: Experience with PMICs, power modules, power supplies, or semiconductor applications.
• Preferred: Experience at a power-supply manufacturer, power-semiconductor or power-management IC company, or system-power architect company.

Education Requirements

Master of Science in Electrical Engineering (MSEE) or higher required.

About the Company

Company: Monolithic Power Systems

Headquarters: San Jose, California, USA

Monolithic Power Systems, Inc. (MPS) is a leading provider of energy-efficient power solutions for various applications, including industrial, telecom, automotive, and consumer sectors. Known for their cutting-edge integrated power semiconductors, MPS emphasizes innovation, sustainability, and creativity, making them one of the fastest-growing companies in the semiconductor industry.