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Arista Networks

Hardware and software for cloud networking

Network Systems Engineer - Pre-Sales

Full-TimeUpdated on 10/15/2026
No salary listed
Senior
Bachelor's
Tokyo, Japan
In Person
Solution EngineeringPre-Sales Solution Engineering

About the job

Requirements
  • A BS, Computer Science, or Computer Engineering technical degree is required.
  • Must be based in Tokyo, Japan.
  • Must have valid legal work authorization in Japan.
  • Fluent or native-level Japanese language skills are mandatory.
  • A minimum of 5 years of Layer 2/Layer 3 networking design and implementation experience is required, focused on data center, campus, and Wi-Fi solutions.
  • Expert-level experience with routing and switching, including Layer 2/Layer 3 protocols, is required.
  • Recent experience in leaf-spine architecture design is required.
  • Expert knowledge of Ethernet, RSTP/MSTP, VLANs, IP routing, TCP/IP, OSPF, BGP, eBGP, VxLAN, multicast, spanning tree, and QoS is required.
  • Good understanding of the competitor technology landscape, including Cisco and Juniper, is required.
  • Expert-level knowledge of industry-standard command-line interfaces is required.
  • Knowledge of competitive products, solutions, and services is required.
Responsibilities
  • Act as a trusted advisor, providing pre-sales technical systems engineering support for customers in Japan.
  • Partner with Account Managers to understand customer pain points, conduct whiteboard network architecture reviews, and present Arista's Open Networking Data Center, Cognitive Campus (including Wi-Fi), CloudVision (Network Automation), Security (Network Detection), Endpoint Security, and Real-time Fabric Monitoring solutions.
  • Architect, design, and propose Arista Data Center and Campus network solutions using leaf-spine architectures (VxLAN, EVPN) and network overlays to capture additional sales.
  • Perform hands-on tests to validate customer proof-of-concept setups, Data Center and/or Campus network designs, and network deployments using new products and features.
  • Prepare design guidelines and recommend improvements to customers for the networks they support.
  • Partner with the Sales Team to respond to RFPs and RFQs.
  • Provide feedback to Product Management and Engineering.
  • Represent Arista at SDN and Open Networking industry events and conferences.
  • Keep up to date on competitive solutions, products, and services.
  • Author white papers on technology and products.
Desired Qualifications
  • Network industry certifications, including Arista Cloud Engineer (ACE) level 4–7, are desired.
  • Demonstrated work experience as a Sales Engineer, Solutions Architect, Pre-Sales SE, or Network Consulting Engineer is preferred.
  • Experience with Software-Defined Networking (SDN) and Network Function Virtualization (NFV) is highly desired.
  • Previous experience building network automation using Python and Ansible is desired.
  • Ability to write white papers is a plus.

About the company

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Arista Networks

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Arista Networks builds high-performance cloud networking hardware and software for large data centers and cloud environments. Its product line includes spine-and-leaf switches and routers that form scalable data-center networks, combined with software for automation and visibility to simplify operations. The network gear is designed for hyperscale and I/O-intensive workloads, offering strong performance and power efficiency. Arista differentiates itself through a focus on scalable, energy-efficient hardware paired with software that improves automation and observability, serving cloud providers, enterprises, and financial institutions via direct sales, partners, and service contracts. The company's goal is to help customers deploy and manage scalable, efficient, and automated data-center networks that meet the demands of large-scale cloud workloads.

Company Size

5,001-10,000

Company Stage

IPO

Headquarters

Santa Clara, California

Founded

2004

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Simplify's Take

What believers are saying

  • August 4, 2026 revenue guidance rose to $12.6 billion, up 40%.
  • AI networking revenue targets $3.5 billion in 2026; over 100 Etherlink customers now.
  • Q2 2026 revenue reached $3.04 billion, and supply visibility improved into 2027.

What critics are saying

  • Q2 2026 purchase commitments hit $9.7 billion, tying growth to scarce components.
  • CEO called the industry shortage a 2028 problem; missed parts crush 2027 shipments.
  • Microsoft and Meta still drive revenue concentration; one spending pause hits earnings hard.

What makes Arista Networks unique

  • Arista’s EOS and Etherlink AI fabric unify data-center, campus, and AI networking.
  • August 4, 2026 guidance shows software-driven execution, not commodity switching sales.
  • Microsoft and Meta have backed Arista for over a decade, validating enterprise trust.

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Benefits

  • Health Insurance
  • Dental Insurance
  • Vision Insurance
  • Performance Bonus
  • Company Equity

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

0%

2 year growth

0%
Yahoo Finance
Oct 19th, 2026
Arista earnings on November 3: Q4 guidance above $3.6B could send the stock soaring

Arista Networks will report third-quarter earnings on November 3, and investors will watch its fourth-quarter outlook most closely. Wall Street expects fourth-quarter revenue of $3.6 billion and earnings of $1.15 per share. The AI networking company makes Ethernet switches that move data between processors in large AI data centres. Analysts expect third-quarter revenue of $3.33 billion and earnings of $1.08 per share, in line with Arista's own forecast of about $3.3 billion. In the second quarter, revenue rose 37.7% from a year earlier to $3.03 billion. Earnings per share were $0.95, up from $0.70. Nvidia and Cisco Systems also compete in AI networking, and Arista relies heavily on spending by major cloud companies.

Yahoo Finance
Oct 17th, 2026
Arista's 45.4% operating margin dwarfs Vertiv's 19.5%, but Vertiv trades at a lower cash-flow multiple

Arista Networks and Vertiv Holdings both gain as AI data centres come online, but Arista keeps far more of each sales dollar as profit. Arista supplies data-centre networking; Vertiv supplies power and cooling. Arista's second-quarter revenue was $3.036 billion, up 37.7%, with a 45.4% GAAP operating margin. Vertiv reported $3.274 billion in sales, up 24% (18% organic), with a 19.5% GAAP operating margin. A five-point margin drop at constant revenue would cut Arista's operating profit 11.0% and Vertiv's 25.6%. Arista's cushion costs more. Trailing cash-flow multiples were about 45 for Arista and 28 for Vertiv. Vertiv's adjusted free cash flow reached $925 million, helped by favourable working-capital timing.

Yahoo Finance
Oct 15th, 2026
Arista Networks stock is up 54% this year, beating Nvidia and Cisco, on $3.03B quarterly revenue

Arista Networks (NYSE: ANET) is becoming a core player in AI infrastructure by making high-speed Ethernet switches that move data between chips, servers, and storage in data centers. Its stock has risen 54% this year, ahead of Cisco's 50% and Nvidia's 20%. Second-quarter revenue was $3.03 billion, up 37.7% from a year earlier. Net income rose to $1.21 billion from $888 million. On October 7, Arista announced a rack-scale networking design with partners including AMD, Broadcom, Meta Platforms, Microsoft, and Qualcomm. It supports up to 144 AI accelerators in a single hop, scaling to 1,024 across racks. Arista reports third-quarter earnings on November 3, and expects revenue of $3.3 billion. It faces competition from proprietary systems and from cloud customers that may build their own equipment.

Yahoo Finance
Oct 14th, 2026
Arista beat the S&P 500 five years running, a feat only 10 of 484 stocks managed

Arista Networks (ANET), which sells network switches, has beaten the S&P 500 for five straight years. Only 10 of the 484 index members with five years of price data did the same. Chance alone would produce about five such stocks, so luck explains some of the streak. Arista's results suggest more than luck: net income rose in every year, up 416% over the period, while the share price gained 852%. Revenue rose 37.7% year on year in the second quarter of fiscal 2026. Management raised its full-year revenue growth outlook to 40%. Net income growth slowed to 20% in the latest twelve months, from 26% the year before. Arista reports third-quarter results on November 3, 2026.

Yahoo Finance
Oct 12th, 2026
Arista shares fall 2.7% to $211 as it pushes Ethernet into AI accelerator racks

Arista Networks (NYSE:ANET) unveiled an Ethernet push deeper into AI computing, but its shares fell about 2.7% to $211.01 on October 12. The move aims to let customers connect AI chips without locking their infrastructure into one supplier's proprietary network. The company's Etherlink SU-144 architecture supports 144 accelerators over a single-hop network and up to 1,024 across racks. Its liquid-cooled 7060XE7 switches deliver 102.4 terabits per second each, and next-generation optics could lift rack bandwidth from 1.6 to 6.5 petabits per second. At $211.01, the stock sits 24.87% above GuruFocus's GF Value estimate of $168.98. The announcement disclosed no orders, pricing, or shipment volumes.