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Arista Networks · Santa Clara, CA

PCIe Senior/Lead Software Engineer

Santa Clara, CA, United StatesFull-timeManager or lead$140,000 to $210,000Software Engineering

Listed on Arista Networks’s official careers site. Posted April 21, 2026. Check that it is still open and apply there.

Apply on Arista Networks’s careers site →

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 Compensation 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 consistent and competitive pay appropriate to the market. The actual base pay offered will be based on a wide range of factors, including skills, qualifications, relevant experience, and work location. The pay range provided reflects base pay only and in addition certain roles may also be eligible for discretionary Arista bonuses and equity.

Employees in Sales roles are eligible to participate in Arista’s Sales Incentive Plan, which pays commissions calculated as a percentage of eligible sales. US-based employees are also entitled to benefits including medical, dental, vision, wellbeing, tax savings and income protection. The recruiting team can share more details during the hiring process specific to the role and location #LI-SP1

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