PMU Hardware Electrical Design Engineer

Summary

Are you interested in designing hardware as part of custom silicon development at Apple? Join our team developing custom mixed-signal integrated circuits for Apple’s existing and future product lines. Our small team has shipped hundreds of millions of chips into several Apple product lines, including new products launched this year. We are looking for an electrical engineer passionate about hardware design and board-level power delivery. In this role, you will craft complex validation platforms and reference designs for state-of-the-art power supplies owning schematics, layout, board-level power integrity modeling, lab bring-up, and correlation. You will also collaborate across functions to define HW design and layout best practices for optimize power distribution networks across Apple products and be a key contributor to the silicon development effort. Do you want to be a part of building the “surprise and delight” in Apple’s future products?

Minimum Qualifications

BS and a minimum of 3 years of relevant industry experience

Preferred Qualifications

MSEE preferred. Proven experience in multi-layer PCB hardware design (schematic capture, component selection, and layout review using tools such as Cadence Allegro, Altium, or similar). Strong background in power supply design and regulator behavior (Buck, Boost, LDO), including component sizing, loop stability, and transient response trade-offs. Strong foundation in board-level power delivery networks (PDN): decoupling strategies, power plane stackup, and DC IR drop / transient droop optimization. Solid understanding of PCB layout and grounding strategies to control return current paths, minimize loop inductance/ground bounce, and prevent noise coupling into sensitive analog/control circuits. Experience with board-level power/PI simulation tools (e.g., SPICE, SIMPLIS, Sigrity PowerSI/PowerDC, SIwave, or ADS) and model-to-hardware correlation is a plus. Skilled in an electronics lab environment with hands-on board bring-up, debugging, and characterization using oscilloscopes, active probes, electronic loads, and frequency analyzers/VNAs. Familiarity with microcontrollers/FPGAs, or Python scripting for test automation and data analysis is a plus. Excellent teamwork, communication, and cross-functional problem-solving skills.

Description

In this exciting role you will be responsible for: - End-to-end hardware development of PMU validation platforms and reference designs (schematics, component selection, layout, and board bring-up). - Designing mixed-signal board circuits including Buck/Boost converters, LDOs, analog sensing, and digital control interfaces (I2C, SPI, SPMI). - Developing board-level Power Integrity (PI) models and correlating simulation results with hands-on lab measurements. - Analyzing and optimizing board power distribution networks (PDN) to meet transient droop, DC drop, ripple, and target impedance specifications. - Developing layout guidelines and reference designs to optimize power routing, minimize loop inductance, and prevent noise coupling to sensitive analog signals. - Driving lab debug and root-cause resolution for complex power quality and regulator stability issues.