About this role

Arista Networks is hiring a mid-level Network Engineer in the operations function based in Dublin, Ireland. The posting calls out experience with Networking, Testing, Automation, Agile.

Role: Network Engineer
Function: operations
Level: mid
Track: Individual contributor
Employment: Full-time
Location: Dublin, Ireland
Department: Software Engineering
Posted: Jun 15, 2026

Job description

from Arista Networks careers

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

Arista Networks is looking for world-class Network Engineers to help us test the highest quality networking products you can buy. At Arista, you will work side by side with the developers, helping us to explore, find and fix our bugs before they can reach our customers.

You’ll bring your intelligence, creativity, and drive to work every day to help us understand how our products are going to be used by our customers. Your job is to find the hard bugs before our customer do.You will NOT spend your time running manual regressions of mind numbing, 1000 page test plans, because Arista’s developers automate all the basic functional and integration tests. Instead, you’ll bring your intelligence, creativity, and drive to work every day to help us understand how our products are going to be used by our customers and to make sure that they’re going to work every time. Your job is to find the hard bugs, the ones not easily exposed by the developers’ automated unit and product level tests.

What You'll Do

Use every means possible to find the bugs in the software and/or hardware being developed by your team.
Write test plans to validate Arista features and products.
Design test network topologies to validate functionality, performance, stability and scalability of features and products.
Execute test plans to verify all aspects of the product. Identify defects and validate resolution.
Work as an agile member of a combined development and test team, running in short cycles to develop functional software in quick iterations.
Work with the developers on your team in creating their plans for automated tests to complement the exploratory testing that you perform. Be the testing expert for your team.
Participate in functional specification and software design reviews held by your team and provide customer centric input.

Qualifications

Proven expertise in creating test methodologies and writing test plans.
Strong knowledge in one or more of the following areas: Ethernet, RSTP/ MSTP, VLANs, IP Routing, TCP/IP, OSPF, IS-IS, BGP, IGMP, PIM SM/ SSM, QoS, L2-L3 protocols, Platform validation, HA, QOS, network management.
Experience with IXIA and/or Spirent test tools desired.
Familiarity with test automation tools and scripting languages desired.
BSc CS/CE/EE plus 3+ years of experience.
MSc degree preferred.
Strong communication skills.
CCNP (or equivalent experience).
CCIE certification is a plus.

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