System Engineer Architect

At Apple, we work every single day to craft products that enrich people’s lives. The people here at Apple don’t just create products — they create the kind of wonder that revolutionizes entire industries. We invite you to join our dynamic group, for the unique opportunity to contribute to upcoming products that will delight and inspire millions of Apple’s customers every day.
Are you interested in doing work that challenges you, expands your thinking, provides innovative solutions for future problems while driving your growth as recognized technical leader in the cellular industry? Apple's RF Transmitter Systems Engineering team is looking for a hardworking, dedicated individual who is eager to break technical boundaries and to change the way of doing things. Our elite team is shaping the mobile market with pioneering RF innovations while taking full responsibility for execution and commitments to schedule and quality.
Join our team of leading experts in cellular RF industry and deliver differentiating transmit architectures and solutions for Apple’s wireless products that create amazing value for our customers! Description

In this role, you will be part of an industrial-leading RF Transmitter Systems Engineering team. You will work closely with other architecture- and systems engineering teams, RF design teams and SW teams to assess, specify and drive transmitter lineup concepts with focus on pioneering performance and uncompromised quality as baseline for differentiating products. Your daily work includes the following tasks:

• Translate system level- and performance requirements into requirements for the TX system including the breakdown to component and block level.
• Simulations (e.g., MATLAB, ADS) for transmitter lineup analysis.
• Identify and analyze critical requirements and provide deep-dive assessments of RF performance metrics, timelines and risks.
• Drive the alignment of requirements, design targets and design trade-offs with other teams such as HW design and SW engineering.
• Provide specifications as input for the HW and SW development.

Relevant experience in RF, including cellular transmit architectures, or PhD degree with previous work on cellular RF topics.
Understand how to analyze transmission chains from the RF baseband interface to the antenna and translate top-level requirements into specifications for transceiver building blocks and RF components (e.g., PA, RF filter, RF switch).
Good knowledge of TX performance metrics like ACLR, EVM and spectrum masks.
Strong analytical skills and the ability to collaborate and communicate across multicultural, global teams.
Preferred Qualifications

Initial expertise in transmitter concepts and procedures for cellular systems like power control, digital pre-distortion, Crest-factor reduction, TX impairment corrections (e.g., IQ imbalance) and PA supply voltage modulation.
Knowledge of cellular radio/3GPP standards (GSM, UMTS, LTE, LTE-A, 5G NR), including RF aspects as well as system use cases and TX waveforms.
Background in digital signal processing.
BSEE or MSEE is required. We would prefer a Ph.D. in Electrical Engineering or equivalent.