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Arista Networks Jobs (NOW HIRING)

Company Description Arista 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 ...

Company Description Arista 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 ...

Company Description Arista 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 ...

Customer Quality Engineer

Santa Clara, CA · On-site

$114K - $167K/yr

Company Description Arista 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 ...

MCAD Application Engineer

Santa Clara, CA · On-site

$119K - $180K/yr

Company Description Arista 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 ...

Company Description Arista 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 ...

Company Description Arista 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 ...

Company Description Arista 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 ...

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Arista Networks information

What is Arista Networks?

Arista Networks is a leading computer networking company that designs and sells multilayer network switches, software, and related technology for large data center, cloud computing, high-performance computing, and high-frequency trading environments. The company is known for its high-performance, programmable networking solutions and its EOS (Extensible Operating System) software platform. Arista's products are widely used by enterprises, service providers, and cloud titans to build scalable and reliable network infrastructures.

What are the key skills and qualifications needed to thrive as an Arista Networks network engineer?

To excel as a Network Engineer at Arista Networks, you need in-depth knowledge of networking protocols, data center architectures, and a degree in computer science or a related field. Familiarity with Arista EOS, Python scripting for automation, and certifications like CCNP or Arista ACE are highly valued. Strong problem-solving skills, attention to detail, and effective communication set top candidates apart. These skills ensure efficient network operations, rapid troubleshooting, and successful collaboration in dynamic environments.

What are some common challenges faced by engineers working at Arista Networks, and how can new hires prepare for them?

Engineers at Arista Networks often work on complex, large-scale networking solutions that require a deep understanding of both hardware and software. A common challenge is rapidly adapting to new technologies and protocols in a fast-paced, innovation-driven environment. New hires can prepare by strengthening their foundational knowledge of networking concepts, familiarizing themselves with Arista’s EOS (Extensible Operating System), and being proactive in seeking mentorship from experienced colleagues. Collaboration and effective communication are essential, as teams frequently work cross-functionally to solve customer problems and develop new features.
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What cities are hiring for Arista Networks jobs?

Cities with the most Arista Networks job openings:

What states have the most Arista Networks jobs?

States with the most job openings for Arista Networks jobs include:

Infographic showing various Arista Networks job openings in the United States as of August 2026, with employment types broken down into 33% Full Time, 66% Part Time, and 1% Contract. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution.

PCIe Senior/Lead Software Engineer

Arista Networks

Nashua, NH • On-site

Full-time

Re-posted 15 hours ago


Job description

Company Description

Arista 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 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!

Additional Information

Arista 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.