Product RF Design Engineers should have a broad-based knowledge in aspects RF architecture, design, integration and manufacturing. They have deep theoretical and practical knowledge in one or more areas of electromagnetic theory, RF and Wireless circuit design, communication theory, and product design trade-off. They use electromagnetic and system simulation, hands on prototyping, test and measurement to understand complex system and sub-system interactions, implications to product level design, and manufacturing trade-offs to enable mass production.

Minimum Qualifications
BSEE or equivalent education
Coursework or experience in antenna/RF design, wireless communications, EM, or circuits.
Knowledge of EM or RF or antenna design
Knowledge of integration of wireless technologies such as cellular, GPS, Wifi, and NFC into products.

Preferred Qualifications
As a Product RF engineer, you would have the opportunity to work and expand on multiple aspects of RF technology. While these are not required from you, they will help you in pushing boundaries of innovation at Apple. A non-comprehensive list may include:

Knowledge of electromagnetic simulation tools
Hands-on experience with RF lab instrumentation
Ability to debug desense issues and characterize noise sources
Experience with production environment and statistical analysis
Excellent interpersonal skills