PCIe Software Engineer

Arista Networks•Austin, TX

21h

About The Position

Arista Networks is an industry leader in data-driven, client-to-cloud networking for large data center, campus and routing environments. The company is known for its relentless pursuit of innovation, leveraging advancements in cloud computing, artificial intelligence, and software-defined networking to provide clients with a competitive edge. Arista values diversity of thought and perspectives, fostering an inclusive environment, and has received awards such as Best Engineering Team, Best Company for Diversity, Compensation, and Work-Life Balance. The Platform team, where this role is situated, operates at the intersection of hardware and software, building the foundational infrastructure for networking ASICs. PCIe software engineers on this team are responsible for developing code to manage high-speed communication between hardware components in switches, collaborating with hardware, diagnostics, and other software engineers to maximize bandwidth and improve reliability on PCIe links.

Requirements

Strong engineering and Computer Science fundamentals.
3+ years fluency in C or C++.
Solid understanding of PCIe hardware and software drivers
Experience with PCIe switches
Significant hands-on experience diagnosing problems, troubleshooting issues, and fixing bugs in low-level firmware

Nice To Haves

Python experience an added bonus.
PCIe state machine, ltssm, tlp, credit flow control knowledge a plus

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 mediate between networking ASICs, FPGAs, and PCIe bridges.
Measuring hardware read and write performance
Develop automated tests using C, C++ and Python to validate your features.