Lead Software Engineer, Physical Network Layer at Arista Networks

Department: Software EngineeringSeniority in posting: senior

Setup: On-site
Location: Nashua, New Hampshire
Type: Full-time
Level: senior
Posted: Jul 7, 2026

Description

Arista Networks is hiring Senior/Lead Layer1 software engineers to develop control software for physical-layer networking components, including connectors, optics, transceivers, and forwarding engines. The role covers feature architecture, C/C++ and Python development, automated testing, hardware and manufacturing collaboration, customer and support troubleshooting, technical leadership, and mentoring. Candidates need a relevant bachelor's, master's, or Ph.D. degree plus the specified years of experience, along with expertise in low-level hardware, digital communication, UNIX or Linux, and software engineering.

Required Skills

C/C++
Python
Low-level hardware
Digital communication
UNIX/Linux
Software engineering
IP networking
Distributed systems

Additional Information

Minimum Education: Bachelor's degree in Computer Science, Electrical Engineering, or Computer Engineering plus six years of experience; or a master's degree plus four years; or a Ph.D. plus three years; or equivalent work experience.
Required Previous Experiences: Six years of experience for the bachelor's-degree path.
Four years of experience for the master's-degree path.
Three years of experience for the Ph.D. path.
Preferred Qualifications: Understanding of IP networking and/or distributed systems.
Translation Company Name: Arista Networks

About Arista Networks

Arista Networks

Manufacturing

Arista Networks was founded to pioneer and deliver software-driven cloud networking solutions for large data center storage and computing environments. Arista’s award-winning platforms, ranging in Ethernet speeds from 10 to 100 gigabits per second,

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