AC-DC Power Design Engineer

Apple • San Jose, CA

3d

About The Position

Apple is seeking an experienced AC-DC Adapter Design Engineer to develop high-density offline power supplies for portable products. The role shapes the architecture, performance, and reliability of adapters used worldwide.

The engineer will lead designs from early concept exploration through mass production, working hands-on with simulations, prototypes, and laboratory validation. They will collaborate with mechanical, thermal, reliability, and manufacturing teams to deliver compact, efficient, robust power solutions that meet demanding design goals and can be produced at high volume. This is a highly technical individual-contributor position requiring ownership of designs from first principles through factory ramp.

Requirements

• Bachelor’s degree in Electrical Engineering or a related field.
• At least 10 years of industry 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.

Nice To Haves

• Master’s or Ph.D. in Electrical Engineering, with 5 years or equivalent of relevant work experience.
• Experience in high-volume adapter development and 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 or digital control techniques.
• Prior experience with a power supply module or adapter company.
• 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 thermals, mechanical integration, packaging, and power-density tradeoffs.
• Experience in high-frequency magnetic designs, including magnetic material selection and winding construction for power transformers and filters.
• Excellent communication and presentation skills.

Responsibilities

• Lead adapter designs from early concept exploration through mass production.
• Perform simulations, build prototypes, and conduct validation in the lab.
• Collaborate with mechanical, thermal, reliability, and manufacturing teams.
• Deliver compact, efficient, robust power solutions that meet design goals and support high-volume production.
• Take ownership of designs from first principles through factory ramp.

What This Job Offers

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