Senior PCIe Software Engineer – Hardware-Software Interface

Arista Networks; Nashua (NH); On-site; USD 140,000 - 200,000; Full time

Job summary

Arista Networks is seeking an experienced PCIe-focused software engineer to join the Platform team. You will work at the hardware/software boundary, bringing up PCIe links and tuning parameters on modern switches, while collaborating with hardware, diagnostics, and software engineers to maximize bandwidth and reliability.

The role emphasizes C/C++ development, Linux driver modifications, and Python-driven test automation to validate features, diagnose issues, and enhance system performance.

Qualifications

• Strong engineering and computer science fundamentals.
• 8+ years fluency in C or C++; Python experience is a plus.
• Solid understanding of PCIe hardware and software drivers.
• Experience with PCIe state machine concepts and PCIe switches.

Responsibilities

• Bringing up PCIe links on new hardware designs.
• Tuning PCIe parameters on root ports, bridges, and end points.
• Modifying the Linux PCI drivers and virtual memory allocation.
• Using AER and DPC to improve error visibility and resiliency.
• Developing userspace software that mediates between networking ASICs, FPGAs, and PCIe bridges.
• Measuring hardware read/write performance.
• Develop automated tests using C, C++ and Python to validate features.

Skills

C/C++

Python

PCIe hardware & drivers

Linux kernel

Job description

Arista Networks is seeking an experienced PCIe-focused software engineer to join the Platform team. You will work at the hardware/software boundary, bringing up PCIe links and tuning parameters on modern switches, while collaborating with hardware, diagnostics, and software engineers to maximize bandwidth and reliability.

The role emphasizes C/C++ development, Linux driver modifications, and Python-driven test automation to validate features, diagnose issues, and enhance system performance.