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

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

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

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

Apple Inc

Computer-Hardware

München

  • Art der Beschäftigung: Vollzeit
  • 51.500 € – 70.500 € (von XING geschätzt)
  • Vor Ort
  • Zu den Ersten gehören

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

Über diesen Job

Summary

Posted:
Role Number:200655138-1731
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!

Description

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.

Responsibilities

  • Define and specify control and sequencing algorithms for PLL and clocking architectures targeting FR1 and FR2.
  • Decompose 3GPP and system-level PLL requirements into detailed specifications for individual PLL building blocks.
  • Define hardware/firmware algorithms with a focus on area- and timing-optimized implementations.
  • Implement and simulate algorithms in MATLAB and C++.
  • Develop innovative concepts to improve and optimize PLL control and sequencing behavior.
  • Author detailed specifications as input to design and firmware teams.
  • Perform root-cause analysis and debug issues identified during verification. Support cross-functional teams in resolving defects.

Minimum Qualifications

  • 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.

Preferred Qualifications

  • 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
  • Apple is an Equal Opportunity Employer that is committed to inclusion and diversity. We also take affirmative action to offer employment and advancement opportunities to all applicants, including minorities, women, protected veterans, and individuals with disabilities. Apple will not discriminate or retaliate against applicants who inquire about, disclose, or discuss their compensation or that of other applicants. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.

At Apple, we’re not all the same. And that’s our greatest strength. We draw on the differences in who we are, what we’ve experienced, and how we think. Because to create products that serve everyone, we believe in including everyone. Therefore, we are committed to treating all applicants fairly and equally. We will work with applicants to make any reasonable accommodations.

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Unternehmens-Details

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Apple Inc

Computer-Hardware

Cupertino, Vereinigte Staaten

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