AC-DC Power Design Engineer

Apple • San Jose, CA

2d

About The Position

Apple is seeking an experienced AC-DC Adapter Design Engineer to develop high-density offline power supplies for portable products. The engineer will shape adapter architecture, performance, and reliability, leading designs from early concept exploration through mass production. This is a highly technical individual-contributor role involving detailed analysis, modeling, simulation, hands-on prototyping, and laboratory validation. The engineer will collaborate with mechanical, thermal, reliability, and manufacturing teams to deliver compact, efficient, robust power solutions for high-volume production, while providing technical guidance to junior engineers.

Requirements

• Bachelor’s degree in electrical engineering or a related field and a minimum of 10 years of industry experience; alternatively, a master’s or Ph.D. in electrical engineering with 5 years or equivalent of relevant work experience.
• Experience with AC/DC power conversion topologies such as flyback, resonant converters, and PFC design.
• Strong foundation in semiconductor and power electronics fundamentals, including silicon/GaN behavior, circuit analysis, control systems, magnetics, and embedded systems for power control.
• Ability to lead technical discussions and work effectively with cross-functional mechanical, thermal, reliability, and manufacturing teams.
• Experience in high-volume adapter development, including familiarity with manufacturing processes, tolerances, and production variation.
• Mastery of offline AC-DC power supply design, including topology selection (flyback, forward, LLC, and other resonant topologies) and high-efficiency PFC design using advanced analog/digital control techniques.
• End-to-end design capability, including analytical modeling, in-depth simulation with parasitics, prototype bring-up, validation, and design for manufacturing.
• Expertise in safety and EMC regulatory compliance, component selection, high-density layout, and efficiency optimization, including no-load and light-load techniques.
• Deep understanding of thermal and mechanical integration, packaging, and power-density tradeoffs.
• Experience in high-frequency magnetic design, including magnetic material selection and winding construction for power transformers and filters.
• Excellent communication and presentation skills.

Nice To Haves

• Prior experience with a power supply module or adapter company is highly desirable.

Responsibilities

• Own AC-DC adapter design from architectural concept through mass production.
• Perform detailed analysis, modeling, and simulation, and conduct hands-on prototype bring-up and laboratory validation.
• Work with mechanical, thermal, reliability, and manufacturing partners to ensure robust integration.
• Drive key design decisions and investigate complex issues through analytical problem-solving.
• Provide technical guidance to junior engineers while maintaining a primary focus on hands-on technical contribution.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior