
Wireless System Integration and Characterization Engineer
Required skills
- Wireless System Integration
- Characterization
- PHY
- Radio
- Silicon
- Bring-up
- Debug
- Communication Theory
- Radio Calibration Algorithms
- Test Equipment
Nice to have
- MSEE
- Electrical Engineer
- Computer Engineering
- Tx/Rx Metrics
- EVM
- Sensitivity
Role summary
Apple is seeking a Wireless System Integration and Characterization Engineer to join their dynamic team. This role involves the system integration and characterization of state-of-the-art wireless SoC products, including bring-up, integration, tuning, and debugging of PHY and radio systems. The engineer will leverage their understanding of communication theory and radio calibration algorithms to optimize performance and debug silicon issues. Experience with test equipment and software configuration is essential for this role, ensuring Apple products meet and exceed customer expectations.
Description
In this technical role, you will be part of a dynamic group and have the rare and extraordinary opportunity to craft products that will delight and encourage millions of Apple’s customers. You will be responsible for System integration and characterization of state-of-the-art wireless SoC products, as well as bringup & integration of the PHY/Radio and executing the PHY and radio level characterization on internal silicon solution from chip back until shipping in your favorite Apple products. You will engage with the first silicon arrives to bringup, integrate, tune and debug the PHY and radio system operation and performance. You will use your understanding of communication theory and radio calibration algorithms to optimize performance and debug issues on the silicon. Your experience using and understanding the test equipment to identify and zero in on issues and your software skills to configure and probe the chip. As an owner of the silicon performance, you will be key in making sure Apple products exceed expectations.
Minimum Qualifications
BS and a minimum of 3 years relevant industry experience Experience in wireless system design, integration, or bring-up.
Preferred Qualifications
MSEE or PHD with relevant experience Knowledge in existing wireless communication protocols: 802.11a/b/g/n/ac/ax/be, LTE/WCDMA/GSM, or 802.11ad/ay. Understanding communication theory and key Tx/Rx metrics like EVM and sensitivity. Experience bringing up radio calibration algorithms (such as Power Control, IQ imbalance, LO Leakage, TSSI or others). Experience in system bring-up, integration, characterization, and debug of real wireless silicon in a lab. Experience using and understanding of the theory of operation of wireless/RF test equipment such as signal analyzer, signal generator, and spectrum analyzer. Experience developing test automation including equipment drivers, debug tools, automation scripts, database interfaces, and reporting tools. Experience with Python, Matlab, Perl, C/C++, or C#. Experience with automation infrastructure development (traceability, repeatability) and related tools (GIT, CI, database, reporting tools). Preferred advanced degrees MS or Ph.D in Electrical Engineer or Computer Engineering.
Sample Apple interview questions
- 1
Design a typeahead box for a search engine
system designmedium - 2
Design a rate limiter
system designmedium - 3
Architect a key-value store for distributed systems.
system designmedium - 4
Design a system to schedule jobs in a distributed environment
system designmedium - 5
What is an API and how does it work?
technicalmedium
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