Wireless RF PHY Firmware Engineer
Key Skills for This Role
Full Job Posting
Description
As an Embedded FW Engineer, the individual will be a core member of a Wireless SoC firmware team, with emphasis on PHY bring up, RF calibrations, signal processing algorithm implementation and performance tuning.
- Work closely with product SW and manufacturing teams to provide system-level API and firmware functionality to meet productization needs. Develop SoC test and calibration capabilities for wafer, module, and system factories.
- Collaborate with RF/Radio design, DVT, PHY and System engineering teams to architect, define and implement innovative algorithms, calibrations and protocols.
- Debug realtime systems with limited visibility, working hands-on with development boards and lab equipment.
- Support pre-silicon validation efforts, including simulation, emulation, and FPGA prototyping.
- Support post-silicon bringup, validation, performance characterization, system integration and debug.
Minimum Qualifications
- BS and 10+ 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 Qualifications
- 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.
About Apple
Designing and manufacturing consumer electronics, software, and digital services.
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