Apple · 1 month ago
Wireless RF PHY Firmware Engineer
Irvine, California, United States
Full-time
Onsite
Mid Level
$140K/yr - $258K/yr
3+ years expApple is seeking a Wireless RF PHY Firmware Engineer to join its growing Wireless Connectivity Silicon team. The role involves crafting and implementing embedded firmware for SoC bring up and wireless connectivity enablement, collaborating closely with product software and manufacturing teams.
AppsArtificial Intelligence (AI)BroadcastingDigital EntertainmentFoundational AIMedia and EntertainmentMobile DevicesOperating SystemsTVWearables
Responsibilities
Collaborate with the systems team to understand algorithm implementations in Python
Implement algorithms on embedded CPUs
Ensure firmware results are aligned with the Python reference implementation
Integrate algorithms into the firmware flow to enable time-critical, online calibration
Debug and resolve issues related to corner cases, part-to-part variations, and other anomalies
Handle error conditions and implement appropriate recovery mechanisms
Qualification
Required
BS and 3+ years of relevant industry experience
Embedded systems knowledge including: multi thread environment, Interrupt thread processing/latency, Multi core environment, HW/FW semaphores/resource management
Preferred
Strong background in embedded FW development using C and assembly languages, familiarity with ARM CPUs and its internals
Good understanding of embedded wireless communication systems, Radio and PHY fundamentals and key RF performance metrics
Familiarity with digital signal processing algorithms
Understanding python match library like numpy/SciPy and how to convert it to embedded C
Understanding difference between fix point and floating points and how to make arithmetic tradeoff and simplify embedded usage
Experience with low-level hardware interfaces, register and interrupt programming, bare-metal software development, clock and power management
Solid understanding of basic embedded concepts such as RTOS, concurrency, multi-processor systems
Fluency in using lab equipment such as logic analyzers, oscilloscopes, network analyzers, spectrum analyzers, signal generators, and power meters
Experience implementing diagnostics, manufacturing tests, and protocol compliance software
Knowledgeable of industry standards for wireless communications such as Bluetooth, WLAN, ZigBee, UWB is a plus
Proficient in at least one of the scripting languages such as Python, Perl, or Tcl
Excellent communication skills – both written and oral
Benefits
Comprehensive medical and dental coverage
Retirement benefits
A range of discounted products and free services
Reimbursement for certain educational expenses — including tuition
Discretionary bonuses or commission payments
Relocation
Company
Apple
Apple is a technology company that designs, manufactures, and markets consumer electronics, personal computers, and software.
10001+ employees
H1B Sponsorship
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2025 (6998)
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2023 (3939)
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Funding
Current Stage
Late StageTotal Funding
$5.67BKey Investors
Berkshire HathawayMicrosoftSequoia Capital
2026-01-10Pre Seed· $1M
2025-05-05Post Ipo Debt· $4.5B
2025-01-16Post Ipo Debt· $0.31M
Leadership Team
Tim Cook
CEO
Craig Federighi
SVP, Software Engineering
Recent News
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2025-12-01
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2025-09-25
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