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Cellular PHY Systems Engineer

Apple· Hardware
Apply on company site
Hybrid (San Diego, CA), Hybrid (San Francisco Bay Area, CA)$175k - $308.5kfull-timePosted 6mo ago

About the role

Senior cellular system engineer focused on pre- and post-silicon bring-up, validation, and end-to-end cellular system verification across HW/FW/SoC interfaces for modem systems.

Responsibilities

  • Pre- and post-silicon bring up, and validation of end-to-end cellular systems.
  • Understand and map systems algorithms and requirements to HW/FW architecture, simulation and emulation-based validation of control flows and PHY/L1 algorithms.
  • Collaborate with SoC, PHY, PHY HW, PHY FW, and L1 SW teams to ensure end-to-end system requirements are met.
  • Hands-on pre- and post-silicon verification, validation, and bring-up of silicon to support productization.

Qualifications

  • BS and 10+ years of relevant experience.
  • Knowledge of cellular communication standards: 6G, 5G NR, 4G LTE, PHY uplink channels and signals.
  • Deep knowledge of communication system theory and signal processing (LDPC, Polar, Turbo encoder design, signal estimation and detection, AGC, RF impairments estimation and correction, channel estimation, OFDM, MIMO, waveform generation, upsampling).
  • Experience with Matlab, C/C++ and/or Python for algorithm development, modeling (floating-point and fixed-point) and link-level simulation.
  • Experience in low power algorithm design for power-critical applications (helpful).
  • Experience in end-to-end timeline analysis for time-critical algorithms (helpful).
  • Experience in chip bring-up using protocol test equipment, spectrum analyzers, signal generators, power meters, etc.
  • In-depth knowledge of wireless communication systems with hands-on lab testing & characterization.
  • Strong analytical skills (linear algebra, random processes, detection and estimation).

Skills

Required:Cellular system engineering5G NR / 4G LTE / 6G knowledgeAlgorithm developmentProgrammingPre/post-silicon verificationCollaboration with cross-functional teamsAnalytical skills
Nice to have:Lab testing / instrumentation

Benefits

  • Comprehensive medical and dental coverage
  • Retirement benefits
  • Discounted products and free services
  • Educational expense reimbursement (tuition)
  • Discretionary bonuses or commissions (potential)
  • Relocation assistance (potential)
  • Employee stock purchase plan and restricted stock units (RSUs)
  • Stock programs for Apple shareholders
Last updated Aug 28, 2026. Interested? Apply on the company site.

About Apple

Discover the innovative world of Apple and shop everything iPhone, iPad, Apple Watch, Mac, and Apple TV, plus explore accessories, entertainment, and expert device support.

Discover the innovative world of Apple and shop everything iPhone, iPad, Apple Watch, Mac, and Apple TV, plus explore accessories, entertainment, and expert device support.

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