Cellular RF Systems Engineer – Phase-Locked Loop (PLL) (m/f/d)

Imagine what you could do here. At Apple, new ideas have a way of becoming extraordinary products, services, and customer experiences very quickly. Bring passion, dedication, and a no-excuse mindset to your job and there's no telling what you could accomplish. Smart people and inspiring, innovative technologies are the norm here.

Apple's RF Systems Engineering team is seeking a passionate, self-driven expert with a proven track record in phase-locked loop knowledge and control. Our world-class team shapes the mobile market with forward-thinking concepts while maintaining full accountability for execution, timelines, and quality.
Join us to deliver leading-edge phase-locked loops (PLLs) for Apple's wireless products and help create a uniquely exceptional customer experience!
In this role, you will be an integral part of our cellular RF Systems Engineering team. You will collaborate closely with transmitter and receiver architecture teams, RF design teams, digital design and verification teams, and firmware teams to drive PLL innovations — with a relentless focus on best-in-class performance under real-world conditions and clear differentiation from competing solutions.
<h3>Minimum Qualifications</h3>Experience defining control sequences for digital and analog blocks within transceiver architectures
Strong analytical and problem-solving skills
Deep understanding of RF transceiver architecture, with specific expertise in frequency synthesis (PLLs, DCOs) and key metrics such as phase noise and lock time
Extensive hands-on experience specifying and simulating phase-locked loop (PLL) and clocking architectures
<h3>Preferred Qualifications</h3>Solid knowledge of cellular radio standards at the physical layer (GSM, UMTS, LTE, 5G NR) and their implications for RF/PLL specifications
Excellent written and verbal communication skills for effective cross-functional collaboration
Experience using AI tools — such as LLMs, AI-assisted coding environments, and simulation co-pilots — to accelerate design exploration, automate repetitive analysis tasks, and improve engineering productivity
Master's or PhD in Electrical Engineering (or equivalent) with 3+ years of relevant experience in RF/mixed-signal architectures

The minimum salary pursuant to the CBA amounts to EUR 81,580 gross per year for full-time employment. Actual salaries are oriented at current market salaries and take your qualifications and experience into account.
Apple is an Equal Opportunity Employer that is committed to inclusion and diversity. We take affirmative action to ensure equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or other legally protected characteristics. If you’d like more information about your EEO rights as an applicant. Apple will not discriminate or retaliate against applicants who inquire about, disclose, or discuss their compensation or that of other applicants.