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Salary
≈ $54k – $117k per year (Estimated)
Location
In office (Madrid)
Seniority
Senior · 5+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 19, 2026. First seen by Alion on Jun 16, 2026. Arista Networks scores B on the Alion truth index.

Overview
Company
Impact
Profile match
Arista Networks is an American networking company founded in 2004 that sells high-speed ethernet switches and routers for data centres, campus networks and increasingly artificial intelligence clusters. Its differentiator is EOS, a network operating system built on an unmodified Linux kernel with a published state database, which allows programmatic control and streaming telemetry that traditional switch software could not offer. Headquartered in Santa Clara and listed on the New York Stock Exchange, it counts the largest cloud operators among its biggest customers and has taken substantial share from incumbent switch vendors in the data centre.

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.

Who You'll Work With

The Routing team who work on the core logic of the network that decides on how packets traverse the network in the most optimal and resilient manner. CloudVision is Arista’s enterprise network management and streaming telemetry SaaS offering, serving the world’s largest Financials, Media and Entertainment, Health Care, and Cloud companies. As we continue to scale the service and expand into new markets, we’re looking to grow the team with Software Engineers in our Dublin office.

What You'll Do

CloudVision’s core infrastructure is a scale-out distributed system providing real-time and historical access to the full network state, along with frameworks for building advanced analytics. It’s written in Go and leverages open source technologies like Hbase, ClickHouse, ElasticSearch, Kafka, Kubernetes, Ambassador and Zookeeper under the covers. We’re constantly investing in scaling out the platform and building out richer analytics capabilities in the infrastructure.

On top of this core platform we’re building device management and network analytics applications to fully automate today’s enterprise network, from CI/CD pipelines for network automation, to advanced analytics and remediation for network assurance.

As a backend software engineer at Arista, you own your project end to end. You and your project team will work with product management and customers to define the requirements and design the architecture. You’ll build the backend, write automated tests, and get it deployed into production via our CD pipeline.

    • BS/MS/PhD in Computer Science or a relevant experience.
    • 5+ years experience in one or more of the following languages; Go, C, C++.
    • Experience with network monitoring, network protocols, distributed systems, machine learning or data analytics is a plus.
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