Embedded Software Engineer

Ethereum Technologies LLC; Milpitas (CA); On-site; USD 130,000 - 190,000; Full time

Job summary

Ethereum Technologies in Milpitas, CA, is seeking a highly skilled embedded software engineer to design and optimize real-time C/C++ applications for Linux on ARM-based platforms, including NEON acceleration and multi-threading.

You will implement drivers for AXI/DMA interfaces, collaborate on FPGA integration with Xilinx MPSoC, and drive performance profiling to guarantee deterministic behavior in streaming workloads.

Qualifications

• Expert-level C for embedded Linux environments.
• Proficient with ARM NEON SIMD intrinsics and optimization techniques.
• Experience with Xilinx Zynq MPSoC/RFSoC and PetaLinux.

Responsibilities

• Architect and implement high-performance multi-threaded C/C++ apps for real-time streaming on embedded Linux.
• Develop software drivers/interfaces (AXI DMA, UIO, memory-mapped registers) for hardware blocks.
• Profile and tune performance with perf/Valgrind to ensure deterministic behavior.
• Produce production-grade code with architecture notes, build scripts and test procedures.

Skills

C for embedded Linux

ARM NEON SIMD

Xilinx Zynq MPSoC/FPGAs

AXI DMA / PCIe

POSIX threads

Linux device drivers

GCC/Clang cross-compilers

Tools

GDB

Git

CMake

Vivado/Vitis

Job description

US Citizen, Green Card, H-1B, OPT-EAD, CPT, Other

Scope of Work & Deliverables

• High-Performance Multi-Threading: Architect and implement efficient C/C++ userspace applications utilizing POSIX threads (pthreads), thread isolation, CPU affinity, and lock-free synchronization routines to handle real-time streaming data on embedded Linux.
• ARM NEON Optimization: Vectorize and optimize critical algorithmic loops using ARM NEON intrinsics and assembly to maximize SIMD throughput on ARM Cortex-A processor cores.
• FPGA Hardware Integration: Develop robust software drivers/interfaces (e.g., Linux UIO, AXI DMA, memory-mapped registers) to exchange data between Linux software applications and custom IP blocks in the Xilinx Programmable Logic (PL).
• Profiling & Performance Tuning: Utilize Linux profiling tools (perf, Valgrind, custom execution benchmarks) to diagnose bottlenecks, optimize cache usage, and ensure deterministic performance.
• Technical Documentation & Code Hand-off: Deliver well-commented, productiongrade source code along with architectural notes, integration build scripts, and test procedures for internal engineering hand-off.

Required Technical Expertise

• Core Programming: Expert-level C for embedded Linux environments.
• Vector Acceleration: Hands-on proficiency with ARM NEON SIMD intrinsics and assembly-level optimization techniques.
• Xilinx SoC Platform: Demonstrated experience with Xilinx Zynq UltraScale+ MPSoC/RFSoC platforms (PetaLinux).
• Hardware Interfacing: Deep understanding of AXI4, PCIe, AXI DMA engines, and Linux memory management (DMA-BUF, /dev/mem, UIO).
• Multi-Threaded Systems: Solid background in concurrent programming, memory synchronization, and real-time POSIX scheduling.
• Tooling: Expertise with GCC/Clang cross-compilation toolchains, GDB, Vivado / Vitis, CMake, and Git.

We are an equal opportunity employer. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on merit, competence, performance, and business needs. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, national origin, citizenship/ immigration status, veteran status, or any other status protected under federal, state, or local law.