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Arista Networks · Austin, TX

# PCIe Senior/Lead Software Engineer

Austin, TX, United States Full-time Manager or lead Software Engineering 

Listed on Arista Networks’s official careers site. Posted June 4, 2026. Check that it is still open and apply there.
[Apply on Arista Networks’s careers site →](https://jobs.smartrecruiters.com/AristaNetworks/744000130265609-pcie-senior-lead-software-engineer)

[OpenNash Jobs](https://jobs.opennash.com/) / [Arista Networks](https://jobs.opennash.com/companies/arista-networks/) / PCIe Senior/Lead Software Engineer

## Job description

Who 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 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.

## Qualifications

Strong engineering and Computer Science fundamentals. 8+ years fluency in C or C++. Python experience an added bonus. Solid understanding of PCIe hardware and software drivers PCIe state machine, ltssm, tlp, credit flow control knowledge a plus Experience with PCIe switches Significant hands-on experience diagnosing problems, troubleshooting issues, and fixing bugs in low-level firmware If you’re passionate about performance optimizations and enjoy working at the hardware/software boundary, the Platform team is a perfect choice!

## At a glance
- Posted by the employer: Jun 4, 2026
- First seen by OpenNash: Jul 10, 2026
- Last checked: Oct 17, 2026
- Listed for: 135 days
- Location: Austin, TX, United States
- Employment type: Full-time[Apply on Arista Networks’s careers site →](https://jobs.smartrecruiters.com/AristaNetworks/744000130265609-pcie-senior-lead-software-engineer)

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### [PCIe Software Engineer](https://jobs.opennash.com/companies/arista-networks/jobs/a4317d2d0f3fcd939920/)

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