PCIe Software Engineer

Company DescriptionArista Networks is an industry leader in data-driven, client-to-cloud networking for large data center, campus and routing environments. What sets us apart is our relentless pursuit of innovation. We leverage the latest advancements in cloud computing, artificial intelligence, and software-defined networking to provide our clients with a competitive edge in an increasingly interconnected world. Our solutions are designed to not only meet the current demands of the digital landscape but to also anticipate and adapt to future challenges.At Arista we value the diversity of thought and perspectives that each employee brings to the table. We believe that fostering an inclusive environment, where individuals from various backgrounds and experiences feel welcome, is essential for driving creativity and innovation.Our commitment to excellence has earned us several prestigious awards, such as Best Engineering Team, Best Company for Diversity, Compensation, and Work-Life Balance. At Arista, we take pride in our track record of success and strive to maintain the highest standards of quality and performance in everything we do.Job DescriptionWho You'll Work WithOperating right where hardware meets software, the Platform team builds the foundation for our networking ASICs and supporting infrastructure. PCIe software engineers write the code that manages high speed communication between hardware components in our switches. We work with hardware, diagnostics, and software engineers to maximize bandwidth and improve reliability on the PCIe links.What You'll DoAs part of this team, you'll work on projects like:Bringing up pcie links on new hardware designsTuning pcie parameters on root ports, bridges, and end pointsModifying the linux pci drivers and virtual memory allocationUsing AER and DPC to improve error visibility and resiliencyDeveloping userspace software that mediate between networking ASICs, FPGAs, and PCIe bridges.Measuring hardware read and write performanceDevelop automated tests using C, C++ and Python to validate your features.QualificationsStrong engineering and Computer Science fundamentals.3+ years fluency in C or C++. Python experience an added bonus.Solid understanding of PCIe hardware and software driversPCIe state machine, ltssm, tlp, credit flow control knowledge a plusExperience with PCIe switchesSignificant hands-on experience diagnosing problems, troubleshooting issues, and fixing bugs in low-level firmwareIf you're passionate about performance optimizations and enjoy working at the hardware/software boundary, the Platform team is a perfect choice!Additional InformationArista Networks is an equal opportunity employer. Arista makes all hiring and employment-related decisions in a non-discriminatory manner without regard to race, color, religion, sex, sexual orientation, gender identity, national origin or any other factor determined to be unlawful under applicable federal, state, or law law. All your information will be kept confidential according to EEO guidelines.