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Senior Network Engineer - Solution Test

Arista Networks

Arista Networks

Dublin, Ireland
Posted on Thursday, May 2, 2024

Company Description

Arista Networks is the leader in software driven networking solutions for today’s largest Data Center (DC), Cloud, Internet/WAN, Service Provider (SP) and Campus environments. Arista has over 7500 customers ranging from the largest cloud providers, to healthcare, government, carrier, finance, education, and production web/SaaS companies. Arista's products are the foundation underpinning much of modern society's operations.

Arista has ambitious plans and an unprecedented opportunity for growth and we are looking for many more engineers and designers to join us in building and innovating the world's networks. Arista is a profitable, publicly quoted company with revenues of over $2B with a culture of invention, quality, respect, and fun.

One of the many attractions of joining Arista is that right from the top, Arista is an engineering company. The founders and engineering managers are all engineers who understand good software engineering and the importance of doing things right.

Job Description

Arista Networks is looking for a high-caliber Network Engineer for our Solution Test team. The key role of the Solution test group is to ensure the quality of Arista’s products through system testing of large, complex, and feature-rich, end-to-end environments. This involves focusing on key technologies as well as emulating Arista’s most important and strategic customers' networks by:

  • Researching technologies, features, and customer environments in order to come up with the right topologies to test

  • Exercising extensive feature interaction and identifying potential areas of breakage

  • Exhaustive testing focusing on realistic use cases, scale, and performance

Job Responsibilities

  • Collaborate with various stakeholders from the development, sales, and other engineering teams to understand testing requirements and expectations (could be a new feature, new design, new release, specific migration scenarios…)

  • Plan the building of, or add to the existing network topology, as required to test the use cases

  • Configure hardware, features, traffic generators, and other tools to emulate the required environment

  • Execute exhaustive test plans, focusing on potential weaker areas, performance, and realistic scale based on real-life scenarios

  • Participate in test plan reviews held by feature test teams and provide customer-centric inputs

  • Troubleshoot failures and performance shortcomings and work with the development team on reproduction, root cause analysis, fix verification, and bug/limitation documentation

  • Communicate and present results to various stakeholders while providing feedback and recommendations on potential design, implementation, and performance improvements

  • Interact with the sales team and customers to answer questions, handle ad-hoc requests, and run small demos

  • Collaborate with peers to cross-train on new technologies and improve team effectiveness

  • Help the TAC team with escalation reproduction efforts when needed

  • Help the POC team with demo efforts when needed


  • Bachelor's or Master's (preferred) degree in telecommunications, computer engineering, computer networking

  • 10+ years of experience working on complex end-to-end environments, including design and hands-on tasks (deployments, implementation, migration…)

  • Experience in testing preferred but not required

  • Highly detailed working knowledge of layer 2 and layer 3 technologies such as IP forwarding, IP multicast, OSPF, BGP, VxLAN, MPLS, EVPN, ECMP, VRRP, STP, RSTP, MST, PVST+, Ethernet link aggregation, LACP, etc.

  • Detailed working knowledge of layer-2/3 switch administration, including industry-standard CLI, SNMP, and API interfaces

  • Familiarity with Linux tools such as ping, traceroute, tcpdump, ifconfig, ip link, ip route, arp, /proc/net, /proc/sys/net, vmstat, netstat, ttcp, iperf, and strace

  • Some familiarity with scripting languages such as Python or TCL

  • Strong written and oral communication skills

  • Strong drive to improve quality and curiosity to learn new technologies

  • Able to operate with a high degree of independence, driven by an internal desire to succeed at the challenge of breaking our products

  • ACE L4, CCIE or JNCIE level (holding the certification a plus, but not required)

Additional Information

All your information will be kept confidential according to EEO guidelines.