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# PCIe Senior/Lead Software Engineer

- **Company:** Arista Networks
- **Location:** Santa Clara, CA, United States
- **Experience:** Expert
- **Salary:** $140,000 - $210,000
- **Contract:** Permanent contract
- **Skills:** C (Programming Language), Automation of Tests, C++ (Programming Language), Software Debugging, Field-Programmable Gate Array (FPGA), Python (Programming Language), PCI Express, Virtual Memory, State Machines, Hardware Infrastructure
- **Published:** November 6, 2026
- **Apply:** https://www.juju.com/job/7_9F75963C4A2CF37263E1FF44203410B3

## About the Role

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.8+ 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 firmwareCompensation Information The new hire base pay for this role has a pay range of $140,000 to $210,000. Arista offers different pay ranges based on work location, so that we can offer

## Description

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 With Operating 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 Do As part of this team, you'll work on projects like:Bringing up pcie links on