Apple is looking for a Wireless Embedded Physical Layer Data Path Signal Processing Firmware Engineer to work on the embedded 5G/4G/multimode cellular firmware effort within a silicon design group responsible for crafting and productizing powerful cellular SoCs.
Requirements
- Experience either with implementing digital signal processing algorithms using special purpose digital signal processing HW -OR- wireless physical layer channels by interfacing to special purpose hardware.
- Experience leading feature delivery for a complete firmware/software life cycle.
- Experience architecting system level features.
- Deep understanding of software engineering principles, and core computer science fundamentals.
- Fundamental facility with C and C++, compilers, build and source code control tools.
- Experience with silicon prototyping, emulation systems, and virtual platforms.
- Solid understanding of computer architecture with particular emphasis on the HW/SW interfaces of high-speed communication subsystems.
Responsibilities
- Implement key 3GPP digital signal processing algorithms with very tight time, latency and energy budgets by interfacing to specialized cellular ASIC hardware.
- Implement firmware which implements 3GPP channels and procedures such as: PDCCH, PDSCH, PBCH PUCCH, PUSCH, PRACH UL/DL HARQ.
- Implement some of the following: Channel Estimation, Channel State Feedback, Interference Cancellation, Cell Search and Measurement, Beam Measurement.
- Work with systems engineers to refine signal processing algorithms for efficient firmware/hardware execution.
- Specify, design, and implement the firmware architecture for superior power, performance, and cost.
- Assist in the development on pre-silicon emulation systems/virtual platforms and use them for verification.
- Evaluate and implement groundbreaking tools for build, formal verification and test.
Other
- BS and 10+ years of relevant industry experience.
- Some mainstream OS application-level development and Python or Perl scripting experience.
- Understanding of 5G and 4G 3GPP protocols.
- Some familiarity with wireless communications.
- Significant experience with memory constrained Real Time Operating Systems (RTOS) and concurrent programming.
