Full-Time
Proof of Concept Engineer
Arista Networks
5,001-10,000 employees
Hardware and software for cloud networking
No salary listed
Company Historically Provides H1B Sponsorship
Austin, TX, USA
Hybrid
 Sales & Solution Engineering (1) |
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- Bachelor of Science degree in Computer Science, Computer Engineering, or Electrical Engineering; Master of Science degree preferred.
- 5+ years of experience in software test, system test, proof of concept tests, network consulting, systems engineering, or advanced services.
- In-depth knowledge and experience in deploying, testing and troubleshooting: STP, LACP, OSPF, BGP, EVPN, ISIS, Segment Routing, BFD, NSF, MPLS, IGMP, PIM SM/SSM, ACL, QoS, Radius/TACACS+, 802.1x, NAC, sFlow.
- Experience in network virtualization technologies such as VXLAN, OpenStack, etc.
- Experience in integrating firewalls, load balancers, and virtualization controllers in virtualized networks.
- Experience in routing and switching hardware platform tests.
- Experience with IXIA or Spirent for traffic generation and protocol emulation.
- Experience in server virtualization and Linux tools.
- Experience in scripting using Python, Tcl, Perl, etc.
- Strong written and verbal communication skills.
- Ability to operate with a high degree of independence and manage projects.
- Enjoy cross-functional collaboration and shared responsibility in small team settings.
- Enjoy on the job learning of new technologies.
- Work with Arista System Engineers and potential customers to write and develop POC test plans to verify and validate that Arista products meet customer’s network design requirements.
- Identify or develop test tools and test methods to validate complex scale and performance requirements.
- Design, build and configure large test beds for the POC tests.
- Trial run the POC tests, verify that the product and solution meet customer’s solution needs.
- Host customer for POC, execute tests and demonstrate capabilities.
- Document test results with detailed logs, screen shots and other supporting information.
- Log defects identified in the bug tracking system with detailed diagnostic information, reproduce defects and assist engineering team in resolving defects.
- Propose feature and functionality enhancements based on customer feedback.
- Participate in engineering functional specification and test plan review meetings and provide inputs on functionality, scale and test requirements.
- 1+ years of experience in multi-protocol system test.
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
Simplify's Take
What believers are saying
- Ethernet-for-AI market shift accelerates as hyperscalers standardize on Arista over InfiniBand.
- Multi-source XPO agreements reduce supply chain concentration and margin compression through 2027.
- Customer diversification with Google and Anthropic reduces Microsoft and Meta concentration risk.
What critics are saying
- Microsoft and Meta represent 42% of revenue; sudden spending cuts devastate financial performance.
- Supply constraints on wafers, memory, CPUs compress gross margins 180 basis points through 2027.
- Nvidia Spectrum-X and Cisco Nexus AI directly compete for Arista's AI networking market share.
What makes Arista Networks unique
- XPO liquid-cooled optics deliver 12.8 Tbps with 4X density improvement for AI workloads.
- Virtual Output Queuing technology eliminates network blocking in AI data center environments.
- Net Promoter Score of 89 with 94% customer approval demonstrates strong product-market fit.
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Growth & Insights and Company News
6 month growth
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↑ 0%TD Cowen analyst Sean O'Loughlin has highlighted two AI infrastructure stocks focused on data center networking and optical technologies, arguing that efficient connectivity is as crucial as computing power for AI systems. Coherent, a global leader in photonics and lasers, reported strong fiscal second-quarter results with revenue of $1.69 billion, up 17% year-over-year, and non-GAAP earnings per share of $1.29, up 35%. O'Loughlin rates it a Buy with a $330 price target, citing its positioning in co-packaged optics and vertically integrated business model. Arista Networks, which provides client-to-cloud networking hardware for AI environments, posted fourth-quarter revenue of $2.49 billion, up 29% year-over-year. O'Loughlin gives it a Buy rating with a $170 price target, highlighting its Ethernet-based switching capabilities for AI data centers.
Arista Networks has announced a new optics module called XPO, capable of 12.8 Tbps throughput and 204.8 Tbps per rack. The company will demonstrate the technology at the OFC 2026 conference in Los Angeles. TD Cowen initiated coverage of Arista Networks on the same day, setting a $170 price target with a Buy rating. The firm highlighted Arista's strong software and hardware design capabilities, noting its potential to gain market share in the Ethernet sector. TD Cowen added that the company's networking platform could meet requirements for large language model providers. Arista Networks, headquartered in Santa Clara, California, provides data centre networking and AI software solutions.
Arista Networks CEO Jayshree Ullal announced at the Morgan Stanley Technology, Media & Telecom Conference that the company expects to reach $11 billion in revenue in 2026, up from $9 billion in 2025. This marks the first time the cloud networking company will surpass the $10 billion revenue threshold. Ullal noted that Arista's total addressable market has nearly doubled from $60 billion to $105 billion. The company anticipates adding one to two new customers that will each contribute 10% of revenue this year, driven by an expanding customer base and higher spending. Arista is investing in chips, silicon and memory to address an anticipated two-year memory shortage. The company plans to sustain margins through hardware and software differentiation.
Arista Networks has announced the formation of a multi-source agreement for XPO, a liquid-cooled optics module delivering 12.8 Tbps throughput. The technology achieves 204.8 Tbps per rack unit, representing a fourfold improvement over existing 1600G-OSFP optics. Designed for AI networking applications, XPO features an integrated cold plate capable of cooling up to 400W per module. The system supports all industry optics standards and offers flexible interface architectures including linear, half-retimed, and fully-retimed options. The XPO MSA will debut at OFC 2026 in Los Angeles, with demonstrations at Arista's booth and partner exhibits. According to Dell'Oro Group, the breakthrough preserves the configurability and serviceability of pluggable optics modules whilst delivering significantly higher front-panel density for AI data centres.
Arista Networks, a provider of AI data centre networking solutions, has raised its 2026 revenue growth estimate to 25% from 20%, following strong fourth-quarter results that exceeded expectations. The company's full-year 2025 revenue and earnings jumped nearly 29% to $9 billion and $2.32 per share respectively. Despite supply constraints and high memory prices, Arista's deferred revenue balance rose to $5.4 billion in Q4 from $4.7 billion in the previous quarter, indicating a robust pipeline. The company estimates the data centre Ethernet switch market could reach $110 billion by 2030, up from around $30 billion last year. Analysts have set a 12-month median price target of $177.50, suggesting 33% upside potential. Nearly all 25 analysts covering the stock recommend buying.