Apple - San Diego, CA

posted 5 months ago

Full-time - Mid Level
San Diego, CA
Computer and Electronic Product Manufacturing

About the position

At Apple, we work every single day to craft products that enrich people's lives. We are seeking a forward-thinking and unusually hardworking Wireless System Engineer, who will be involved in both design and integration as part of their growth. This role offers the rare and extraordinary opportunity to craft upcoming products that will delight and encourage millions of Apple's customers every single day. As a technical contributor, you will be responsible for the physical layer system design, integration, and characterization of state-of-the-art wireless SoC products at the center of a silicon design group from conception to production. In this role, you will implement system models for the wireless communication system and its RF/circuit impairments. You will design, simulate, and implement state-of-the-art physical layer wireless communication algorithms. This includes designing algorithms for calibration, pre-equalization, cancellation, and/or pre-distortion techniques to achieve efficient and robust performance across a large number of parts, systems, and wireless channels. You will also implement fixed-point models and perform detailed performance investigations to allow performance sign-off and enable RTL bit-exact development. Collaborating with digital designers, you will realize PHY algorithms using power and area-efficient digital implementations, and work with firmware designers to implement high-efficiency software implementations and hardware acceleration. Your responsibilities will also include validating and characterizing algorithms on real silicon alongside RFIC and digital circuit designers and automation/test engineers. You will bring up and take to production state-of-the-art physical layer wireless communication system algorithms for very high data rate applications. Additionally, you will design firmware-based algorithms involving MAC-PHY interactions and SW-based PHY configurations, implementing codes in Python and firmware. Developing test plans and working with automation/test engineers to implement the same, you will collect and analyze test results, identifying and debugging issues as necessary.

Responsibilities

  • Implement system models for the wireless communication system and its RF/circuit impairments.
  • Design, simulate, and implement state-of-the-art physical layer wireless communication algorithms.
  • Design algorithms for calibration, pre-equalization, cancellation, and/or pre-distortion techniques.
  • Implement fixed-point models and perform detailed performance investigations.
  • Realize PHY algorithms with digital designers using power and area efficient digital implementations.
  • Collaborate with firmware designers for high efficiency software implementations and hardware acceleration.
  • Validate and characterize algorithms on real silicon alongside RFIC and digital circuit designers.
  • Bring up and take to production physical layer wireless communication system algorithms for high data rate applications.
  • Design firmware based algorithms involving MAC-PHY interactions and SW based PHY configurations.
  • Develop test plans and work with automation/test engineers to implement them, collect and analyze test results.

Requirements

  • BS degree in technical discipline with minimum 3 years of relevant experience.
  • Validated experience in system design, integration, bringing up and productization of wireless communication systems.
  • Experience bringing up a wireless chip including initial bringup/tuning of blocks, tuning of the tx or rx chain.
  • Deep understanding of communication theory and signal processing related algorithms.
  • Deep experience in system design, integration, bring up, characterization and debug of real silicon in lab.
  • Experience using and understanding the theory of operation of lab equipment (spectrum analyzer, signal generator, power meter, etc.).
  • Experience in modem architecture, microprocessor architecture, hardware and software control.
  • Experience with silicon prototyping, emulation systems, and virtual platforms is a plus.
  • Experience with multi-radio coexistence management is a plus.
  • Knowledge in existing wireless communication protocols: LTE/WCDMA/GSM, 802.11a/b/g/n/ac/ax/be, 802.11ad/ay or Bluetooth/BLE.
  • Proven experience with Matlab, Python, Shell scripting and/or C/C++.
  • Excellent communications skills, both written and oral.

Nice-to-haves

  • Experience with silicon prototyping, emulation systems, and virtual platforms.
  • Experience with multi-radio coexistence management.

Benefits

  • Comprehensive medical and dental coverage
  • Retirement benefits
  • Discounted products and free services
  • Reimbursement for certain educational expenses including tuition
  • Discretionary bonuses or commission payments
  • Relocation assistance
  • Participation in Apple's discretionary employee stock programs
  • Ability to purchase Apple stock at a discount through Employee Stock Purchase Plan.
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